Ubuntu Installation :: Installing With Raid 0 - Grub: No Such Device

Jun 29, 2011

I have a raid 0 setup with 2 x 1TB drives. I have an ASUS P8P67 LE motherboard and am using Interl RST for the Raid setup. I'm utterly ignorant of raid and therefore forgive any mistakes... I already had windows 7 installed and was attempting to dual boot ubuntu.

I installed Ubuntu from CD. The raid was picked up properly as only one drive by ubuntu. So it picked up the windows MBR and the main windows partition. I resized the main partition and used the "install ubuntu and windows 7 side by side" option. Installation went fine but once I restarted the PC I was welcomed by a grub rescue screen with the message: "error: no such device e196.....". Edit: I used the Windows 7 disc to repair the windows bootloader so I can now boot into Windows 7.

Before doing so I used gparted on the live cd to check the partitions on the drives. The only ones present were the MBR and windows one. So ubuntu seemingly didn't install... Although GRUB did... I was advised by someone on the ubuntu IRC chat to avoid trying to reinstall ubuntu at that point just in case there was an error in the partitioning process. I've since checked the state of the partitions from within windows and there's the MBR partiton, the windows partiton AND the partition that I created for ubuntu... 965MB of the partition that I created is listed as used space as well...

View 6 Replies


ADVERTISEMENT

Ubuntu Servers :: Grub Error On Hardware Raid 1 / Default Root Device Shows That Prefix=(hd0,1)/grub?

Apr 13, 2011

I'm currently setting up a dell server with hardware raid 1 on sas 6r. i got 4 sas installed on the server and configured to raid 1 as stated below,
array 1:
slot 0 & 1

array 2:
slot 2 & 3

during the installation, the installer detect the array 2 as sda and array 1 as sdb.. so i proceed with installation on array 2. after completed the installation, the first reboot lead me to a 'grub-rescue" prompt. by following the guide at url Mode, i've noticed that the boot folder has changed to (hd1,1), which i believe it has changed to sdb1. default root device shows that prefix=(hd0,1)/grub.

View 3 Replies View Related

Ubuntu Installation :: Dual Boot SSD Non Raid - 1 Terabyte Raid 1 Storage "No Block Device Found"?

Sep 15, 2010

It's been a real battle, but I am getting close.I won't go into all the details of the fight that I have had, but I've almost made it to the finish line. Here is the set up. ASUS Z8PE-D18 mother board 2 CPU, 8 Gig Ram. I recently added an OCZ Agility SSD, defined a raid 1 virtual disk on the 1 terabyte WD HDD drives, which will holds all of my user data, the SSD is for executables.The bios is set to AHCI. Windows 7 installed fine, recognizes the raid VD just fine.

I installed Ubuntu 10.04 by first booting into try and mode, then opening a terminal and issuing a "sudo dmraid -ay" command. Then performing the install. I told it to install the raid components, and told it to let me specify the partitions manually. When setting up the partitions, I told it to use the free space I set aside on the SSD from the Windows 7 install as ext4 and to mount root there. Ubuntu installed just fine, grub2 comes up just fine, and Windows 7 boots with out a hitch, recognizing the mirrored partition as I indicated previously. When I tell grub to boot linux however, it pauses and I get the "no block devices found" message. It will then boot, but it does not recognize the raid array. After Ubuntu starts up I can run "dmraid -ay" and it recognizes the raid array, but shows the two component disks of the raid array as well. It will not allow the component disks to be mounted, but they show up which is annoying. (I can live with that if I have to)

I have fixed a similar problem before by setting up a dmraid script in /etc/initramfs-tools/scripts/local-top ... following the instructions found at the bottom of this blog:[URL].. To recap: My problem is that after grub2 fires up Ubuntu 10.04.1 LTS (Lucid Lynx), it pauses, and I get "no block devices found" It then boots but does not recognize the raid array untill I manually run "dmraid -ay". I've hunted around for what to do but I have not found anything. It may be some timing issue or something, but I am so tired of beating my head against this wall.

View 4 Replies View Related

General :: Installing Grub On A Dual-boot RAID Config?

Sep 29, 2010

Ive created two RAID0 partitions on my drives, a 500GB and a 60GB. Im trying to install Ubuntu on the smaller partition (ive already put Win 7 on the larger one) and every time when i get right to the last part of installation it says Grub couldnt be installed. "the grub package failed to install in arget......."

View 1 Replies View Related

Ubuntu Installation :: Grub Rescue Mode - Error: Cannot Find A Device For /boot/grub (is /dev Mounted?)

Dec 16, 2010

I updated yesterday and now when I start my laptop it goes in to grub rescue mode. I have booted from a 'live cd' and thought I could repair grub from there. In gparted however the partition with ubuntu (sda1) is seen as unknown file system, in terminal when I list the partition table it shows up as FAT16 type. When I try a grub-install it gives this error message:

[Code]....

View 9 Replies View Related

Ubuntu Installation :: Mounting A NTFS Raid 0 Device?

Dec 27, 2010

let's say this system has 3 hard drives. Drive #1 and #2 are RAID 0 and Windows7 lives there. It is a hardware RAID, not software.

On Drive #3 Ubuntu has been installed using WUBI - it boots up and works okay - but it does not see the RAID array.

Do I just need a linux driver to be able to see & mount my "Windows" RAID0 array? Or is this even possible? Can anyone point me in the right direction?

View 1 Replies View Related

Ubuntu Installation :: Grub - Setup: Warning: Attempting To Install GRUB To A Partition Instead Of The MBR - Install - Lvm - Luks - Raid - Karmic Server

Mar 27, 2010

I'm running Karmic Server with GRUB2 on a Dell XPS 420. Everything was running fine until I changed 2 BIOS settings in an attempt to make my Virtual Box guests run faster. I turned on SpeedStep and Virtualization, rebooted, and I was slapped in the face with a grub error 15. I can't, in my wildest dreams, imagine how these two settings could cause a problem for GRUB, but they have. To make matters worse, I've set my server up to use Luks encrypted LVMs on soft-RAID. From what I can gather, it seems my only hope is to reinstall GRUB. So, I've tried to follow the Live CD instructions outlined in the following article (adding the necessary steps to mount my RAID volumes and LVMs). [URL]

If I try mounting the root lvm as 'dev/vg-root' on /mnt and the boot partition as 'dev/md0' on /mnt/boot, when I try to run the command $sudo grub-install --root-directory=/mnt/ /dev/md0, I get an errors: grub-setup: warn: Attempting to install GRUB to a partition instead of the MBR. This is a BAD idea. grub-setup: error: Embedding is not possible, but this is required when the root device is on a RAID array or LVM volume.

Somewhere in my troubleshooting, I also tried mounting the root lvm as 'dev/mapper/vg-root'. This results in the grub-install error: $sudo grub-install --root-directory=/mnt/ /dev/md0 Invalid device 'dev/md0'

Obviously, neither case fixes the problem. I've been searching and troubleshooting for several hours this evening, and I must have my system operational by Monday morning. That means if I don't have a solution by pretty early tomorrow morning...I'm screwed. A full rebuild will by my only option.

View 4 Replies View Related

Ubuntu Installation :: GRUB Onto RAID 5?

Aug 23, 2010

So, I recently installed Ubuntu on a (now) Triplebooting RAID 5 system. However, the setup was not able to install GRUB. This means I cannot boot into Ubuntu currently. The following are acceptable outcomes for me:

1) Installing GRUB as the primary bootloader, allowing me to boot into Linux, Windows 7, or Windows XP.

2) Installing GRUB as the primary bootloader, but allowing me to boot into the Windows 7 Bootloader as well as Ubuntu.

3) Installing GRUB as a secondary bootloader that can be accessed through the Windows 7 Bootloader.

My current config, according to gparted with kpartx installed is:

[code].....

View 4 Replies View Related

Debian Installation :: Use The PC As A File Server With Two Drives Configured As A RAID 1 Device?

Nov 3, 2010

I just installed Debian 5.0.4 successfully. I want to use the PC as a File Server with two Drives configured as a RAID 1 device. Everything with the RAID device works fine, the only question I have belogs to the GRUB 0.97 Booloader. I would like to be able to boot my Server even if one of the disks fail or the filesystem containing the OS becomes corrupt, so I configured only the data partitions to be a RAID 1 device, so on the second disk should be a copy of the last stable installation, similar to this guide:[URL]...

[Code]...

View 3 Replies View Related

Ubuntu Installation :: 9.10 64, GRUB Can't Boot XP In RAID-1

Jan 12, 2010

I'm a long time windows user and it-tech but I have long felt that my geek-levels were too low so I installed Ubuntu last week (9.10 x64). Hopefully I can make it my primary OS. I have two 80GB drives in RAID-1 from my nforce raid controller, nforce 570 chipset. Then a 320 GB drive where I placed ubuntu and it's also where grub placed itself. And also a 1TB drive.

When grub tries to boot XP I get the error message: "error: invalid signature" I checked the forum as much as I could and tried a few things, but no change.

Drives sdc and sdd are the two drives in raid, they are matched exactly, but detected as different here. I really think they should be seen as one drive.

how I can make grub work as it should?

Also, if/when I need to make changes to grub, do I really have to use the live CD?

Code:
============================= Boot Info Summary: ==============================
=> Grub 1.97 is installed in the MBR of /dev/sda and looks on the same drive
in partition #1 for /boot/grub.
=> Windows is installed in the MBR of /dev/sdb
=> Windows is installed in the MBR of /dev/sdc

[Code].....

View 2 Replies View Related

Ubuntu Installation :: Installing 9.10 On Drives That Used To Be In RAID

Jan 11, 2010

I was recently given two hard drives that were used as a raid (maybe fakeraid) pair in a windows XP system. My plan was to split them up and install one as a second HD in my desktop, and load 9.10 x64 on it, and use the other for mythbuntu 9.10. As has been noted elsewhere, the drives aren't recognized by the 9.10 installer, but removing dmraid gets around this, and installation of both ubuntu and mythbuntu went fine. On both systems after installation however, the systems broke during update, giving an "read-only file system" error and no longer booting.

Running fsck from the live cd gives the error:
fsck: fsck.isw_raid_member: not found
fsck: Error 2 while executing fsck.isw_raid_member for /dev/sdb
and running fsck from 9.04 installed on the other hard drive gives an error like:

The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>

In both cases I setup the drives with the ext4 filesystem. There's probably more that I'm forgetting... it seems likely to me that this problem is due to some lingering issue with the RAID setup they were in. I doubt its a hardware issue since I get the same problem with the different drives in different boxes.

View 5 Replies View Related

Ubuntu Installation :: Installing 10.04 On A Hp Z600 With Raid 1?

Nov 29, 2010

I am having trouble installing Ubuntu 10.04 on a HP Z600 with a two disc raid system. Is there a way to solve this without using the alternate cd (where the data files seem to be corrupted). The regular 10.04 cant find any drives on which to install, the 10.04 alternate cd�s all have corrupted files. I have tried downloading the .iso from two mirrors as well as from .torrent, all have data problems. The HASH checksums are fine, only the data on the burned discs are wrong. I have also tried using a USB install, but there are problems there aswell. At the moment I have win 7 on the disc as on the other partition, and have been using Ubuntu 10.10 (that is now an unbootable broken system), but have to downgrade to 10.04 becasue of software requirements.

The RAID seems to be an INTEL Raid . From HP homepage: Integrated 6 channel SATA 3 Gb/s controller with RAID (0, 1, 5 or 10) capability, optional SAS controller, LSI 3041E 4-port SAS/SATA, with RAID (0, 1 or 10) capability

View 1 Replies View Related

Ubuntu :: Mdadm Raid + GRUB = Not Booting - Error: Unsupported RAID Version: 0.91

Jul 18, 2011

I have a raid5 on 10 disk, 750gb and it have worked fine with grub for a long time with ubuntu 10.04 lts. A couple of days ago I added a disk to the raid, growd it and then resized it.. BUT, I started the resize-process on a terminal on another computer, and after some time my girlfriend powered down that computer!
So the resize process cancelled in the middle and i couldn't acess any of the HDDs so I rebooted the server.

Now the problem, the system is not booting up, simple black with a blinking line. Used a rescue CD to boot it up, finised the resize-process and the raid seems to be working fine so I tried to boot normal again. Same problem. Rescue cd, updated grub, got several errors: error: unsupported RAID version: 0.91. I have tried to purge grub, grub-pc, grub commmon, removed /boot/grub and installed grub again. Same problem.

I have tried to erased mbr (# dd if=/dev/null of=/dev/sdX bs=446 count=1) on sda (ide disk, system), sdb (sata, new raid disk). Same problem. Removed and reinstalled ubuntu 11.04 and is now getting error: no such device: (hdd id). Again tried to reinstall grub on both sda and sdb, no luck. update-grub is still generating error about raid id 0.91 and is back on a blinking line on normal boot. When you'r resizeing a raid MDADM changed the ID from 0.90 to 0.91 to prevent something that happend happened. But since I have completed the resize-process MDADM have indeed changed the ID back to 0.90 on all disks.

I have also tried to follow a howto on a similar problem with a patch on [URL] But I cant compile, various error about dpkg. So my problem is, I cant get grub to work. It just gives me a blinking line and unsupported RAID version: 0.91.

View 2 Replies View Related

Ubuntu Installation :: Grub Multi Boot With Raid 0

Mar 20, 2011

There have been many postings on doing Raid 0 setups, and it seems the best way looks like softRaid, but there were some arguments for fakeRaid in dual boot situations. I've seen some posts on dual boot windows/linux in Raid 0, but I was hoping to do a multi-boot using a grub partition, with several Linux distros and Windows 7. There will also be a storage disk for data, but not in the array. From what I gather, I'll need a grub partition which can only reside on one of the two disks, one swap partition on each disk, then the rest I can stripe.

I've got two 73GB WD raptor drives to use for the OS's and programs. I'm just getting my feet wet with the terminal in linux (Ubuntu makes it way too easy to stay in GUI), and the inner workings of the OS, so I have several questions:

Is this going to be worth the effort? Obviously I'm trying to boost performance in boot and run times, but with Grub on a single drive, will I see much gain?

Does this sound like the right methodology (softRAID)? I only have two spare PCI slot's, which don't seem like they would be condusive to hardware raid, but someone who knows more could convince me otherwise.

[Code]...

View 5 Replies View Related

Ubuntu Installation :: Installing GRUB2 On RAID Root?

Oct 26, 2010

I'm trying to install GRUB2 on root partition under RAID 5. I tried using the alternate CD, but installation failed. Now I'm trying under the live CD and grub-install ... but I'm being told it can't find the device even though /dev/sda2 (root partition) and /dev/sda are mounted.I have 4 discs, each with a swap partition (/dev/sdX1) and a root partition (/dev/sdX2).

View 9 Replies View Related

Installation :: Installing OpenSUSE 11.2 On RAID 0 - Create Screenshots During Installation

May 9, 2010

First of all here's my PC configuration

Proc Core2Duo 6750
MB MSI P35 Neo 2
RAM Corsair 4GB
Video Gigabyte GTS250
HDD 2x320GB Seagate in RAID 0 and 1GB WD

I have a Windows 7 installation with a boot partition on the RAID. I also want to have a dual boot with openSUSE 11.2 but I don't know how to set correctly my partitions. I have some unallocated space next to the Windows C: partition. When I try to install openSUSE it makes a suggestion to create some partitions that i don't need and don't want, and even doesn't mount them. It also creates a / 80GB, /boot 36MB, swap 2GB and /home 20GB partitions, so I am in lack of free space.

I don't know how to create screenshots during installation. Maybe I'll try to reinstall later and pick some screens in english, because my system language is bulgarian.

View 3 Replies View Related

Ubuntu Installation :: RAID 0 & 9.10 - Rebuilding Grub And Wouldn't Work

Feb 1, 2010

I started out with a RAID 0 of 3x 500GB drives. Partitioned to a 200gb Windows 7 install (plus the 100mb partition), a 50gb partition I was going to use for Ubuntu 9.10, and the around 1081GB NTFS storage partition. It wouldn't work, I tried a bunch of things, EasyBCD, ect, rebuilding grub, and everything else... wouldn't work for me. So I gave up, backed up everything and then rebuilt my RAID into to "separate" drives so that I could just change the booting drive depending on the flavour of frustration I was looking for at the time. Installed W7 back, installed Ub9.10 back. Windows loaded through it's drive fine. Ubuntu will not freaking load. So I ran a script I found laying around on one of the many.... MANY posts I read and will attach the outcome.

[Cide]...

View 4 Replies View Related

Ubuntu Installation :: Unable To Install Grub On RAID Array

Feb 3, 2011

I'm trying to switch to a new RAID5 array but can't get it to boot. My disks:/dev/sda: new RAID member

/dev/sdb: Windows disk
/dev/sdc: new RAID member
/dev/sdd: old disk, currently using /dev/sdd3 as /

The RAID array is /dev/md0, which is comprised of /dev/sda1 and /dev/sdc1. I have copied the contents of /dev/sdd3 to /dev/md0, and can mount /dev/md0 and chroot into it. I did this:

Code:

sudo mount /dev/md0 /mnt/raid
sudo mount --bind /dev /mnt/raid/dev
sudo mount --bind /proc /mnt/raid/proc

[code]....

This completes with no errors, and /boot/grub/grub.cfg looks correct[EDIT: No it doesn't. It has root='(md/0)' instead of root='(md0)']. For example, here's the first entry:

Code:

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.35-25-generic' --class ubuntu --class gnu-linu
x --class gnu --class os {

[code]....

However, when I try to boot from /dev/sda, I get:

Code:

error: file not found
grub rescue>

View 9 Replies View Related

Ubuntu Installation :: Blank Screen On Boot - GRUB With RAID

Mar 19, 2011

I am trying to install Ubuntu Server 10.10 on a computer with 5x 1.5 TB HDDs. I went through the process of partitioning the five hard drives into three partitions each:

sd*0 is a 300MB partition for /boot, RAID1, 2 active, 3 spare
sd*1 is a 500MB partition for swap, RAID1, 2 active, 3 spare
sd*2 is a 1.5TB partition for /, RAID5+LVM, 5 active, 0 spare.
md0 is the raid1 on sd*0
md1 is the raid1 on sd*1
md2 is the raid2 on sd*2

During the install, everything seemed to work fine with the formatter, but the installation ended in error. I booted into rescue mode and found that though all the drives were U (in /proc/mdstat), it was resyncing. I let this run (overnight) and the next day, jumped back in and installed the OS successfully.

However, after installing GRUB, when the installation process asked me to reboot, the system came back up with a blank screen (blank, save for a blinking cursor) and didn't move from there. I am thinking that the problem is GRUB, since I can boot into the main LVM partition via the rescue option on the install cd. Here's what bugs me:

[Code]....

View 9 Replies View Related

General :: RAID And Grub 2 On Ubuntu Karmic Koala (installation)

Feb 11, 2010

I've been trying to get Grub 2 to work on a desktop system I'm trying to install Karmic Koala on. It's currently got two similar hard drives, which I've partitioned into a small /boot partition and the rest as a large general partition. Both are fd (linux software RAID) types. I boot from the Ubuntu live CD then create the RAID arrays as RAID 1 (requires installing mdadm to work). Then I start the arrays and begin the install.

I select manual partitioning and create the first RAID array (/dev/md0) as an ext4 /boot. The second array (/dev/md1) requires a new partition table. I then partition it as 20G for /, 2G for swap and the rest as /home, giving me /dev/md1p1, /dev/md1p2 and /dev/md1p3. When the install finishes, I mount the various partitions in /mnt (for /dev/md1p1) and below, including binding /dev and /proc. Then I chroot and install mdadm in the new system. I update grub, re-install it on /dev/sda & /dev/sdb then update the initramfs.

A quick reboot and things go wrong... Grub boots me into a recovery console. Apparently it can't see the partitions in the second RAID array. how to get Grub 2 and/or mdadm to work in this situation? I know that apart from the RAID, the above process worked to allow me to set up a Grub 2 boot on an antique laptop with an incomplete install.

View 20 Replies View Related

Ubuntu Installation :: Device Not Found, Grub Rescue, Post-Installation Error

May 19, 2010

I just (for the first time ever) installed a version of Ubuntu. It is 10.04. I installed off of the Live Disk. I was having a great time until the first time I went to boot into it and I got the message
"Error: No such device: "long number" Grub Rescue> "

[Code]...

View 3 Replies View Related

Ubuntu Installation :: Kernel Upgrade To 2.6.32-23-generic Broke My LVM - RAID And GRUB

Jul 4, 2010

I recently updated the kernel to the newest version(2.6.32-23-generic) using the update manager and now I am unable to boot in to my Lucid installation.

My setup is LVM on top of a RAID 0 array. My computer had been running in this configuration since Lucid was released.

The Error Code I get on Boot is to the effect of: /dev/mapper/ubuntu-os is not available.. and then I get kicked in to Busy Box.

Once in Busy Box if I try to use mdadm to mount the RAID array I get this error:

If I boot in to the live CD I can mount all of the partitions and LVM volumes, so it does not appear to be a failed drive or volume.

I have looked in the mdadm.conf, lvm config and grub config files and searched the "Google" for an answer with no-avail...

Ultimately I would like to find a solution which doesn't involve a re-installation.

View 6 Replies View Related

Ubuntu Installation :: RAID 0 And Win7 Dual Boot - Grub Cannot Install

Sep 13, 2010

I'm having serious troubles to install ubuntu-10.04.1. My raid is an hardware raid with intel chipset. Note that win7 is already installed and working with my raid. I made some space from windows, to install Ubuntu (40gb). First, I run the installer, everything seems to be fine. I choose to install Ubuntu were there is the most space free (sorry, I'm not sure about the real terms used there).

Then my partition with the vista loader appears. So the installer can see my raid, and should work fine (everything is detected correctly). But once I'm in the end of the installation (around 95%), a pop-up appears, and tells me that Grub can't install in /dev/sda and it's a fatal error. I can choose an another destination, but it doesn't seems to work.

View 9 Replies View Related

Ubuntu Installation :: Grub Fails To Install On Hardware Raid Partition / Proceed It?

Feb 12, 2010

No matter which ubuntu version at 95% through the install it will complain that grub failed to install.

I'm installing this on an HP XW6600 with hardware raid striped.

I can use the supergrub rescue CD to boot to ubutu after, but whatever I do doesn't seem to get grub installed.

Any ideas on how to proceed? I'm guessing I need to install grub from scratch.

View 3 Replies View Related

Ubuntu Installation :: 9.10 Wont Boot After Fresh Install - Raid Grub Missing ?

Mar 12, 2010

I had ubu 904 and vista installed on an 80gb drive, i had a spare 80gb drive also. I setup a raid0 config in my bios, then installed ubu9.10 onto it. All was fine until the very end, and then it said grub failed to install.

So i rebooted, and im left with a blinking cursor. How do i install grub? Ive installed ubu a few times now and never had an issue so now im lost.

View 1 Replies View Related

Fedora Installation :: Installing 10 Adaptec 2410SA Sata Raid?

Apr 19, 2009

Am installing Fedora 10 on an old but good server that used to be a windows box. It has 2 sata disk raid level 1 on adaptec 2410SA card. Disks are clean no info even did a low level format and recreated RAID.. twice DVD boots and installs os on raid array and reports success. new volume appears under computer icon but cannot be mounted after reboot attempt reports Reading physical volumes. This may take a while... (it doesn't)

Volume group "VolGroup00" not found
Unable to acces resume device (/dev/VolGroup00/LogVol01)
mount: error mounting /dev/root on /ysroot as ext3: No such file or directory
input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input4

and then a blinking cursor with keyboard echo but its just copying reboot with install DVD does not show previous (unmountable) disk image and repeat of above process increases operator need for alcohol have "disable write cache for drives" as I found that is a post but after fedora install.I do not know what grub is for instance but once linux is booted (on other computers) I can muddle through ok in terminal mode.

View 1 Replies View Related

Ubuntu Installation :: Grub:Error:No Such Device?

Jan 29, 2010

I'm using Kubuntu 9.10 with Ubuntu-desktop installed.I've been using kubuntu for sometime now but i dont know much technical things about it. I have two hard discs (160GB SATA and 80GB PATA).I have just installed Windows XP Professional and then reinstalled grub2 from a live CD. Both OS are on 80GB PATA drive.The Grub menu at boot time has "Windows XP Professional" entry in it. The problem is thatwhen i select that entry, i get an error saying:Quote:Grub:Error:No such device - "a string of letters and numbers"Press any key to continue...When i press any key, it goes back to the grub menu. Kubuntu and Ubuntu work fine.When i go to bios and change my hard disc boot order, grub is bypassed and Windows boots and works good. I dont know much technical things but i think maybe its the problem with Windows entry in grub. (something to do with lines map(hd0,hd1) and map(hd1,hd0) (But i'm nt sure. I just said wat i thought it might be)

View 9 Replies View Related

Ubuntu Installation :: Dual-boot On A RAID-0 Array - Drops To GRUB Command Line?

May 28, 2011

I've recently had trouble reinstalling my Ubuntu system as I was getting various unusual errors as described in my old thread here. I thought it was probably something to do with my RAID-0 array which was pre-installed on my laptop from purchase being corrupted or something like that (if it's possible). I decided to simplify things for myself (not understanding RAID arrays much) so I just removed the RAID array and installed Windows and Ubuntu on the now separate hard disks. It worked fine.

I noticed quite a significant performance drop, however, with even Ubuntu boots taking longer than 30 seconds despite my laptop being both high-spec and only a few months old. Windows, as you can imagine, was dreadfully slow. I wasn't entirely convinced that this was entirely due to the loss of the RAID array - as even low-spec laptops with presumably no RAID arrays are supposed to boot Ubuntu in under 30 seconds apparently - but I read that RAID-0 arra

View 8 Replies View Related

Debian Installation :: Grub Rescue - Will Not Boot From Mdadm RAID - No Such Disk

Sep 19, 2014

I am running a 14 disk RAID 6 on mdadm behind 2 LSI SAS2008's in JBOD mode (no HW raid) on Debian 7 in BIOS legacy mode.

Grub2 is dropping to a rescue shell complaining that "no such device" exists for "mduuid/b1c40379914e5d18dddb893b4dc5a28f".

Output from mdadm:
Code: Select all    # mdadm -D /dev/md0
    /dev/md0:
            Version : 1.2
      Creation Time : Wed Nov  7 17:06:02 2012
         Raid Level : raid6
         Array Size : 35160446976 (33531.62 GiB 36004.30 GB)
      Used Dev Size : 2930037248 (2794.30 GiB 3000.36 GB)
       Raid Devices : 14

[Code] ....

Output from blkid:
Code: Select all    # blkid
    /dev/md0: UUID="2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb" TYPE="xfs"
    /dev/md/0: UUID="2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb" TYPE="xfs"
    /dev/sdd2: UUID="b1c40379-914e-5d18-dddb-893b4dc5a28f" UUID_SUB="09a00673-c9c1-dc15-b792-f0226016a8a6" LABEL="media:0" TYPE="linux_raid_member"

[Code] ....

The UUID for md0 is `2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb` so I do not understand why grub insists on looking for `b1c40379914e5d18dddb893b4dc5a28f`.

**Here is the output from `bootinfoscript` 0.61. This contains alot of detailed information, and I couldn't find anything wrong with any of it: [URL] .....

During the grub rescue an `ls` shows the member disks and also shows `(md/0)` but if I try an `ls (md/0)` I get an unknown disk error. Trying an `ls` on any member device results in unknown filesystem. The filesystem on the md0 is XFS, and I assume the unknown filesystem is normal if its trying to read an individual disk instead of md0.

I have come close to losing my mind over this, I've tried uninstalling and reinstalling grub numerous times, `update-initramfs -u -k all` numerous times, `update-grub` numerous times, `grub-install` numerous times to all member disks without error, etc.

I even tried manually editing `grub.cfg` to replace all instances of `mduuid/b1c40379914e5d18dddb893b4dc5a28f` with `(md/0)` and then re-install grub, but the exact same error of no such device mduuid/b1c40379914e5d18dddb893b4dc5a28f still happened.

[URL] ....

One thing I noticed is it is only showing half the disks. I am not sure if this matters or is important or not, but one theory would be because there are two LSI cards physically in the machine.

This last screenshot was shown after I specifically altered grub.cfg to replace all instances of `mduuid/b1c40379914e5d18dddb893b4dc5a28f` with `mduuid/2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb` and then re-ran grub-install on all member drives. Where it is getting this old b1c* address I have no clue.

I even tried installing a SATA drive on /dev/sda, outside of the array, and installing grub on it and booting from it. Still, same identical error.

View 14 Replies View Related

Ubuntu Installation :: Updated From 9.10 - Grub Rescue (No Such Device)

Sep 23, 2010

Here is a brief history of my problem:

-Ran Windows XP Media Center for most of the life of this HP Pavilion notebook with 2 hard drives, C: and D:, no partitions except the default HP recovery partition

-Yesterday, installed Ubuntu 9.10 through Wubi on D: from an ISO (because the CD drive doesn't work). I assigned it 30gb on D:, which I assume created a 30gb FAT32 partition on this secondary drive.

-Dual booted successfully from Grub between XP and Ubuntu, so I thought, "Mission accomplished" and started making friends with GNOME. Got a pretty good score in Tetris.

-Was asked if I would like to update to the latest Ubuntu (10.04 I think?) which struck me as a good idea. Everything went smoothly until it asked me to reboot.

-Reboot brought me to a command-line that says "grub rescue>" and above it says "error: no such device: e76e00f3-........" (there's more, I can write it out if that helps)

-Rebooted several more times (cause that usually fixes things) but just got back to "error: no such device: ..." and "grub rescue>"

And that's where I am now. I have almost no experience with how Linux (UNIX?) works differently than Windows or how to use the command line. I know that the hard drives are (hd0), (hd1) instead of C: and D: and that everything important seems to start with "sudo" and that's about it. I was going to ease myself into the whole thing gradually, picking up little bits as I go along. But now I'm just stuck in command line limbo and none of my usual troubleshooting strategies apply here, not even yelling rude things about the computer's manufacturer.

View 9 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved