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].....
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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.
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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].....
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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.
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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]...
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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...
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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]...
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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>
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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]....
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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.
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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.
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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.
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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.
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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.
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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
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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.
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Jan 13, 2010
I am trying to install Ubuntu on a nvidia board which, based on the forums I have perused, is a FAKERaid chipset. Originally I tried to install according to https://help.ubuntu.com/community/FakeRaidHowto to no avail. I gave up and am resorting to breaking down my raid setup (thus losing my Windows XP installation) and using Linux's software raid (which seems to be the recommended method) with the Alternate CD install.
I went in to the bios and completely disabled my board's RAID function. I then followed the instructions here: https://help.ubuntu.com/community/In...n/SoftwareRAID , except it popped up with a window advising me "one or more serial ATA RAID configurations have been found. Do you wish to activate these RAID devices?" which that page didn't mention. I believe I selected "Yes". Setting up the partitions I made (from beginning of disk to end of disk) a RAID1 200MB /boot partition, a RAID0 / partition (90GB?), free space not set up in RAID (approx 20GB for each SATA drive to later install Windows on [if that's even possible]) & then the SWAP partition 2GB at the end of one of the disks (is it OK that this one wasn't in RAID?).
The installation completed, as far as I can tell, without a hitch. Except also of note: my network card doesn't work in the installer (gives an error message about unable to configure dhcp) so i'm not connected to the internet. Then I restart and the following appears: grub loading: error: biosdisk read error. Followed by what appears to be the Ubuntu loading splash (just a small white shape in the middle of the screen), and then:
[Code]....
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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.
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Nov 26, 2010
I have installed Ubuntu on my m1530 since 8.04 and currently dual boot Win7 and 10.10. I would like to dual boot on my PC, but I have run into a problem. I am not a pro at Ubuntu, but this problem I can not solve by reading forums like I have in the past.
I realize this is a common problem, but I have noticed people having success.
I have a M4A87TD EVO MB with two Seagate drives in Raid 0. (The raid controller is a SB850 on that MB) I use the raid utility to create the raid drive that Windows7x64 uses. I have 2 partitions and 1 unused space. Partition 1 is Windows, partition 2 is for media, and the remaining unused space is for Ubuntu.
I am running ubuntu-10.10-desktop-amd64 off a Cruzer 16GB flash drive that was installed via Universal-USB-Installer-1.8.1.4.
My problem like so many others is that when I load into Ubuntu, gparted detects two separate hard drives instead of the raid. I read that this is because kpartx is not installed on 10.10. I then went in LiveCD mode and downloaded kpartx from Synaptic Manager. Gparted still reported two drives. I opened terminal and run a few commands with kpartx. I received an error. (Forgive me I didn't write it down, but I believe it said something about a communication error. I will try again later and see.)
Currently I am reflashing the Cruzer with a persistence of 4GB. I am not familiar with this process, but I understand that my LiveCD boot will save information I download to it. I decided to try this method because I was going to install kpartx and reboot to see if this made a difference.
I am looking for any suggestions on a different method or perhaps someone to tell me that the raid controller or some hardware isn't supported. I did install ubuntu-10.10-alternate-amd64 on my flash drive, but fail to get past detecting my CD-ROM drive since it's not plugged in. If this method is viable, I will plug it in. I also watched the ..... video were a guy creates Raid 0 with the alternated CD, but it wasn't a dual boot and didn't use a raid controller from a MB.
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Feb 1, 2011
Could any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
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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.
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Mar 18, 2011
I have a DL380 G3 HP server and I need to attach a 1TB hard drive. Of course the server only accepts SCSI and since I don't have a few thousand pounds to splash about I am looking at alternate methods. What I have done so far is buy a PCI SATA raid card and attach the 1TB drive to it. The BIOS seemed to be playing nice detecting it and allowing me to select the card. But it won�t see the drive.
Funnily enough though when I installed Linux on the SCSI drive during the install it saw the 1TB just fine and I could write to it. This has led me to believe that I could use GRUB (installed on the SCSI) to boot the 1TB as the hardware setup is working but the BIOS just can't handle it. So here I am with no real knowledge of GRUB. I was hoping someone could tell me where to begin with this and if it is even possible
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Nov 26, 2015
I'm having issues with a RAID array.
Setup is like this:
Debian Jessie, 2 hard disks, each having 2 partitions: /dev/sda1, /dev/sda2, /dev/sdb1, /dev/sdb2. Partitions were paired during installation, so they form /dev/md0 and /dev/md1. /dev/md0 is the root (/) partition, /dev/md1 is for /home.
At the end of the install process, I chose /dev/sda1 to carry Grub. And I think this is where I screwed things up.
After removing one of the hard drives, there was no boot capability. So, I installed Grub on /dev/sdb, too.
Now it displays the boot menu but cannot find the kernel. This is where I got lost in the process.
Do I need to reinstall the OS or is there a way to fix it? I suppose I have to edit Grub.
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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......."
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Jun 4, 2010
I've been all afternoon trying to install Ubuntu Lucid on my fakeRAID 0 configured (2) HDDs and am unable to set GRUB up. The fake RAID setup is provided by Intel Matrix Storage Manager, it is correctly enabled and the BIOS is also correctly set up -- in fact, I've managed to install Windows 7 with no significant hitch. After struggling with partioning the drives (had to follow advice I found on a very helpful guide online [0]), creating the filesystems AND getting Ubuntu's installer to actually do what it is supposed to do, I now cannot seem to set GRUB up. My system, as it stands, is unbootable at all; via live CD only.
This is how the RAID0 dev is partitioned:
Code:
# fdisk -l /dev/mapper/isw_ecdeiihbfi_Volume0
Disk /dev/mapper/isw_ecdeiihbfi_Volume0: 1000.2 GB, 1000210694144 bytes
255 heads, 63 sectors/track, 121602 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
Disk identifier: 0x6634b2b5 .....
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Dec 22, 2010
The first is I seem to have 3 GRUB installs. So whilst I update the one from my live session, the change does not appear in the boot up menu. I had installed 10.10 from a CD into a different partition (sda6), but that will not boot, so I have just deleted this and done another grub install and update. The kernel I am using has just been updated from 10.04 to 10.10 too, and it is this that I use and the Grub I have been working on (sda5).
[Code]...
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Aug 4, 2010
I'm trying to install Debian Lenny on my new Dell XPS 8100 Desktop with 2 x 1To SATA HD. (No Windows or any other OS install is present on the system) The Bios allows me to change the SATA mode to either "ATA" or "RAID"
- When SATA mode is set to RAID, the installation goes without issues, but when it comes to load into the system, I've got that Stage 1.5 Grub Loading... Error 2 problem. I assume this is due to the Bios "RAID" configuration. I then switched the SATA mode to "ATA" in the Bios and now I can see the menu that allows me to boot my debian install but that part actually fails too saying "ALERT /dev/sda1 does not exist"
- When SATA mode was set to ATA, I tried to re-install the system but this time my drive was not recognized by the installer: "No common CD ROM drive"
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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]....
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Mar 4, 2011
I have 2 hard disks. sda,sdb
In sda, I have 4 partitions, and I have windows 7 in one of the extended partitions [not in the primary partition].
In sdb, I have 3 partitions. 2 for storage, and 1 10GB drive for Ubuntu. Again, Ubuntu is not of a primary partition.
I had ubuntu 10.04 running on that for a long time. However, I wanted to reinstall ubuntu and use 10.10.This is what I did EXACTLY:Booted from Ubuntu install CD
Chose advanced istall
Selected sdb3 for Ubuntu
I installed GRUB2 on the SAME partition as Ubuntu aka sdb3 Installed then rebooted
I can boot into Ubuntu fine, but whenever I select Windows 7 bootloader from the GRUB menu, the screen goes black, and my PC reboots.
Boot Info:
Code:
Boot Info Script 0.55 dated February 15th, 2010 [code]....
ls: reading directory sda6/: Input/output error
I have tried the testdisk/update-grub method, but it didn't work.
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Mar 26, 2010
So my computer has ubuntu 9.10 installed 1st and I want to install win 7 in a separate partition. Basically, ubuntu 1st, win 7 later so far from what I learned from search results, grub 2 have problem with win 7 installed later and what was recommended was install win 7 before ubuntu. how ever I do not have the time to start over again because there are too many things to back up or install again. can I simply revert grub 2 to grub 1 again and resolve the problem?
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