Is there something special I have to do to get grub to use UUID's? I am putting a couple of extra drives into a 9.10 system (default installation) with a SCSI drive for the OS. That SCSI drive was sda when I built the machine but of course gets bumped when I add these other drives. The fstab file contains UUID's. All attempts to boot with the other drives attached fail.
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I am trying to figure out how to get the UUID for some of my external hard drives.the internet revealed a couple of promising leads, this is what I have tried so far:
ls -l /dev/disk/by-uuid -> didn't list the hard discs
blkid -> didn't list the hard discs
lsusb -v -> listed the hard disc but no uuid
A normally formatted usb key is listed with uuid. The external hard discs are fully encrypted by truecrypt(realcrypt). I have been reading not so great things about that itself, but for now I don't have a promising alternative that I can use with windows as well.Any google searches don't seem to cast any new light on this for me,I'd be open to suggestions if there's a better way to get a definite ID for a hard drive... I just need to be able to mount it with realcrypt
Upgraded. VBox (Win7 - 64bit) runs well, but does not see attached drives. Removed the drives, and attempting to re-attach, usually results in an immediate Windows 7 crash. Even when attached (lucky) - the drives do not re-attach after a VBox reboot. Is there some easy way to downgrade to 10.10??
View 2 Replies View RelatedI am trying to recover some data on some drives that are in the same LVM. When I upgraded the motherboard, I had complications getting the drives to all load under the LVM, and in the process I made the mistake of formatting one of the drives. The problem now is that the UUID changed on the drive so when I try to mount the LVM it can't find device with a certain UUID. When I try to set the UUID back to the old one it says 'Invalid UUID format'.
I can set it to a UUID generated through 'uuidgen', si I then noticed that the format of that UUID is different than the old one which I'm trying to set it to. Why is that? Is there a way I can get it to change to the old one in the different format?
The old format: yQtrVB-5jCk-vF10-05c2-AcDL-GNn1-ivdxxh
The new format: d5224587-a6cd-4a66-a12b-d7b75eec5871
I have three Linksys NSLU2s each running nearly identical setups: SlugOSBE 5.3 with two USB SATA hard drives in enclosures. One partition on each drive is used for software RAID 1. The third NSLU2 which has two identical 500gb Western Digital Blue Scorpion SATA drives and two identical USB enclosures (Flexmate) is giving me issues. The second hard drive keeps getting booted from the RAID array - looking into it I noticed that, for some reason, Linux is reading both RAID partitions as having an identical UUID. I thought maybe that was the issue so I've set about trying to fix it.
SlugOSBE doesn't have tune2fs, so I removed the drives and used tune2fs to create new UUIDs for both partitions (which usually show up as /dev/sda3 and /dev/sdb3) on my Kubuntu 10.10 machine. tune2fs reports the correct new UUID under Kubuntu. But when I plug the drives back in to the NSLU2, it still shows the old UUID for both drives. I've deleted /etc/blkid.tab, but that doesn't seem to do anything.
After much struggling with the server (the one referenced in "shifty, shifty drive letters"), I realized that the problem has nothing to do with drive letters at all. The problem is GRUB2, or some way in which it is misconfigured.
To recap:
Ubuntu Server 9.10
/dev/sda solid-state Sandisk (swap)
/dev/sdb1, /dev/sdb2, /dev/sdb3 2 HW RAID0 SCSI (boot, /, tmp)
/dev/sdc - /dev/sdz 24 one-TB SATA drives
I kept getting "device not found" from GRUB2 when trying to boot. The SATA drives are disconnectable from the front of the chassis. So I disconnected each and every one of them and powered the machine up. To my shock, the machine booted into Linux and it was up and running! It seems that when the 24 SATA drives are plugged in, then GRUB2 can NOT see /dev/sdb. Instead, it sees /dev/sda and fifteen of the one-TB drives (and one floppy drive, whatever that is).
I tried deleting /dev/sdc through /dev/sdz from /boot/grub/device.map, but that didn't work. I also tried plugging in only HALF of of the SATA drives. When the system tried to boot in this state, then GRUB2 just hung. I noticed that the blue LEDs on the front of the (plugged-in) SATA drives blinked on and off in sequence, as if GRUB2 was scanning them. I watched this for about 3 minutes before I got impatient.Is there a maximum number of drives in GRUB2? Does GRUB2 hate SCSI if it detects a whiff of SATA? What's going on?
I have two machines, a laptop and a desktop, both running Lucid. each works fine, but... I can't seem to mount the external drives attached to either machine over the network. I can share folders from the internal drives fine but when I try to access an external drive from either machine I get "unable to Mount volume". Is it possible to mount the external drives across the network? If so, How?
View 1 Replies View RelatedI am using Dell Inspirion 1545 core 2 duo T6600, 3 gb ram,320 gb sata hddand in my bios i got 4 option (1) disable which disable sata and hdd is not detected (2) ATA where in my M$ is working(3) AHCI which mode will work. also i am using vm-ware to installed redhat linux 5.my hdd did not detected. do u need any information tell me i will post it on the same any command out put or log by which we can solve this problem.
View 1 Replies View RelatedSomething wrong regarding grub2 (on 9.10). Yesterday everything worked fine and has done for several months. I didn't mess with anything yet when I booted from grub today it informed me that my UUID doesn't exist and that it's given up waiting for root device. I should also mention that it no longer does the 3 second count down either (not sure if thats significant). I can boot into my other linux and windows without issue. This only seems to affect all the ubuntu boot option. This is all way beyond me but I've searched around and tried the fix where you add all_generic_ide to the boot command but that didn't work. I also worked out how to check the UUID but the number look alright.
grub.cfg and blkid below:
# DO NOT EDIT THIS FILE
# It is automatically generated by /usr/sbin/grub-mkconfig using templates from /etc/grub.d and settings from /etc/default/grub
### BEGIN /etc/grub.d/00_header ###
if [ -s /boot/grub/grubenv ]; then
have_grubenv=true
load_env
fi .....
i am a new user to linux, i installed debian on dual boot with windows 7but now i am unable to access the ntfs drives used by windows originally from the debian OSi am wondering what could be the problem and how can i solve it
View 9 Replies View RelatedI am running Wheezy as my main OS in the first drive in my desktop. I use the 2nd drive for data. I am trying to add another OS to multiboot. When I ran grub-update in Wheezy, I am getting device letter for the root device instead of UUID in grub.cfg, in the os-prober section. Like this
Code: Select allsearch --no-floppy --fs-uuid --set=root 6ee49a8e-a619-49c7-9f66-51a5ca9a48cc
linux /boot/vmlinuz-316-x86_64 root=/dev/sdb3
initrd /boot/initramfs-316-x86_64.img
In the same file, UUID was used for the existing kernels.
Code: Select alllinux /boot/vmlinuz-3.2.0-4-686-pae root=UUID=c2eecf02-d427-4f2e-9fd0-9db61256cbac ro quiet
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.2.0-4-686-pae
How can I get UUID instead of /dev/sdb3 for the 2nd OS?
when my grub references the UUID for the root= parameter, I get a kernel crash. If I change the root= parameter to /dev/<partition>, grub boots without a problem (f13 64-bit)
[Code]....
I am using Debian lenny (kernel 2.6.26-2-686).
I changed my menu.lst to use
root=UUID=<long uuid string>
instead of the good old
root=/dev/sd...
I did that because, if I boot with a usb drive attached to my computer, sda become sdb and therefor nothing works anymore since my friend Kernel can't mount it's root partition. BTW, it works wonders using the UUIDs. The story darkens each time there is a kernel update, dist-upgrade resets my menu.lst back using the /dev/sd... format. and BANG... no more booting again. I am good to change my menu.lst back each time.
I have a PC104 running debian. I have 3 hard drives (in addition to the one booting) mounted in fstab by UUID. I use the options defaults,error=remount-ro. However, this means that when I boot with the hard drives not attached, I have to press Ctrl-D to bypass when the boot discovers the drives are missing. Is there a timeout commandoption I can add to fstab so that it automatically continues booting even if the hard drives are not attached? I could not find anything on a timeout command. (I tried adding timeout=1000 but no-random guess)
View 5 Replies View RelatedFirst my setup: Hardware Genuine AMD Athlon - 512 mg Mem - Nvida card & latest drivers - 80gb & 40gb drives - dvd read only & cdrw.
OS: Ubuntu 10.04 - tried standard desktop then the alt version now back to standard desktop.
Problem: Both optical drives recognise data disks and show them on the desktop. The dvd drive recognises any dvd and not only shows it on the desktop but also flashes up a requester box asking me which program I would like to use to play it. Nothing happens when I insert a music cd in either drive. Rhythm Box Music Player does not show a music cd available to play but does however show my iTouch when I connect it via usb. Btw iTouch is shown on the desktop when connected. What have I done: Fstab had no entries for either drive so I've researched and entered a line for each.The dvd fs is entered as iso9660,udf. The cdrw is using "proc" as a file system as it's the only thing that will show as mounted in Mtab. All else fails. Both drives show up in System/Administration/Disk Utility (irrespective of Fstab entries), therefore the system can see them. Also investigating through the Terminal shows both drives. how to listen to music cds on ubuntu 10.04. I wish to save my music then upload the same to my iTouch. It all worked so well in 8.04.
I've been away from Fedora for a long time, since FC3/4. I seem to recall that at that time grub in Fedora used the standard drive notation such as /dev/sdax instead of the current UUID. Can anyone tell me why this change was made?
Seems to me that using UUIDs presents severe problems if a drive has to be replaced as the restore media (we all backup, don't we?) would not work without modification. How does one determine trhe UUID of a new drive to change the restore media? Sounds like a chickenand-egg routine. There must be some way which I haven't run accross yet. I do notice through experimentation that the standard notation still works, at least in /etc/fstab.
I recently installed openSUSE 11.4 on another hard disk of my 11.3 machine. I have another drive in my computer that is used solely for extra storage. Before installing 11.4 I could boot my computer with or without the drive installed, but now if I try to boot without it I get Error 17 from GRUB. I don't understand this as there is nothing on that drive that should be needed by boot and I can find nothing in the GRUB configuration that references the drive.I am getting ready to clear the whole system for a fresh install anyways, but it would be nice to know for future knowledge what is causing it.
View 9 Replies View RelatedI just upgraded my storage server to maverick and it seems the 2.6.35-25 kernel doestn like the hardware im using
since im pretty sure its a hardware related problem and the previous kernel hastn the issue im currently booting this old kernel everytime i need the server by hand (using Shift during boot for the grub menu to appear)
well, it narrows down to the following question:
how can i exclude a specific grub entry - in my case the current kernel 2.6.35-25 - so only previous kernels OR future kernels from the next updates will have a chance to boot?
What do you prefer using for your backup medium and/or method? I'm thinking about the issue because I've simply used a spare hard drive but am considering getting a flash drive for an extra backup. Specifically, if anyone breaks into my home and steals my computer, I will lose both hard drives. I would keep the flash drive somewhere else that the burglar hopefully won't go through, saving the most important data. Losing the data would be far, far more upsetting than losing the hardware. Anyway, do you use hard drives for backup, or do you prefer something else? Flash drives? I wouldn't guess that CDs are very popular for backups, because they hold only 700 MB. DVDs, perhaps?
View 14 Replies View RelatedI've just downloaded ubuntu server 10.04.1 and put it on my usb flashdisk, the installation works fine until the point, where it tries to install grub.The thing is, that the installer is trying to write the grub to /dev/sda (which is my usb flashdisk) and not the raid itself.I'm using a fakeraid intel ich9r, which maps the newly created storage to /dev/mapper/isw_ecdhgaacgh_Volume0.Why doesn't install use that instead? It sees it, partitions it, even copies files to.
View 5 Replies View RelatedI'm trying to run ubuntu 11.04 (64-bit) on my hp pavilion tx2100ed but it won't boot. After the grub bootscreen it goes black and doesn't react to Ctrl-Alt F1 ..F4.
Also booting the recovery mode doesn't work
To be able to start the installer I had to use xforcevesa.
Does any one know what this can be and how to solve it?
can i force x to start in vesa mode using grub commands?
I installed Fedora 15 to my server. I preffer to work over SSH and I enable X forwarding. My configurational file:
/etc/ssh/sshd_config:
X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost yes
From my laptop I run next commands
ssh -X user@xx.xx.xx.xx
startx
and the session start on server, no redirect occur. Next output I saw in terminal
[Code]....
I am running my web and game server on ubuntu 8.04 lts and am considering in reinstalling a new OS. I would like to try another different OS(most probably CentOS or Debian and I saw alot of good comments about them). I'm not sure what version I am going to install. I searched on websites of companies that rents dedicated servers and noticed that they mainly use Debian 4 or 5 and CentOS 5 or 4.7. I would like you to tell me which versions do you prefer for CentOS and Debian servers.
View 5 Replies View RelatedliveCD hangs on the ubuntu splash screen. this is the second time grub has hosed this system (last time was 9.10 upgrade).
View 9 Replies View RelatedAfter upgrading my ubuntu server from 8.04 to 10.04 and then to 10.10, grub failed to load and showed a: L 99 99 99 99 99 99 99 99 ....
I restarted using a liveCD, mounted my boot partition as /boot and then "grub-install /dev/sdb" (sda is the usb drive now) so I have access to grub console, but I don't know how to recover my boot menu.
I also use LVM, but I don't know if this is relevant.
Problem: I have installed two Ubuntu servers, 10.04 32-bit and 10.10 64-bit, in a multi-boot environment (also have FDOS and WinXPsp3). The 64-bit will not boot because grub can't find the UUID for the disk with the 64-bit system.
Brief Background: Installed 10.04 LTS two months ago with no problems. 10.04 is in a primary partition on hda with FDOS.
Installed 10.10 (64-bit) in a new primary partition on the same hd. The install seemed to go ok, but the MBR and the fs on the 10.04 were corrupted; could not boot. Restored drive, and rebuilt grub.
Installed 10.10 on separate hd (hdb). In grub step all OS's were recognized so I pointed the grub to hda. Grub failed to boot.
Rebuilt grub from 10.04 on hda. All systems recognized but 10.10 will not boot because it says it cannot locate the UUID specified.
Compared the grub.cfg for both systems, the UUID specified for hdb is the same. Also, when I mount the drive for 10.10 on the 10.04 system the drive UUID is consistent.
I know I must be missing some thing, but I know not what. Have searched and can't find any clues. All other OS's boot ok.
Hardware: AMD64 4GB, 2 internal IDE drives (hda and hdb), 1 internal SATA (hdc WinXP), various USB and Firewire Drives (no bootable systems).
I rebooted, and got a new GRUB error:
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,2)
search --no-floppy --fs-uuid --set 7b4afbe0-28fe-4403-bd86-c4364bf10f98
linux /boot/vmlinuz-2.6.31-16-generic root=UUID=7b4afbe0-28fe-4403-bd86-c4364bf10f98 ro single
initrd /boot/initrd.img-2.6.31-16-generic
I'm trying to migrate my LVs over to a Luks volume (prompt on password at boot). Unfortunately, as soon as I add my luks-encrypted physical volume to my volume group, I'm no longer able to update my grub configuration. I've detailed my steps below:
I've created and unlocked my encrypted partition with the following:
Code:
sudo cryptsetup -c aes-cbc-essiv:sha256 -y -s 256 luksFormat /dev/sdb1
sudo cryptsetup luksOpen /dev/sdb1 crypto_agilityssd
My /etc/crypttab looks like this:
[Code].....
I've recently tried to do a full install to a USB stick using a 10.04 cd.
2 things happen as I boot:
1. if Hdds are attached, boot hangs on "checking dmi pool data..."
2. if hdds not attached, "hdd error" scrolls across screen
boots normally w/o the usb stick. I've set up my partitions on usb stick as
1: fat32 2gb <<windows/storage
2: fat32 1.5gb << future persistent install
3: ext4 4gb << hoped-for full install
1 is the first partition so windows finds it nicely. Before install, i unplugged my hdds so that grub wouldn't get confused. I told the installer to put the full install on sda3 with no swap space. I checked (advanced button on summary page) that bootloader is being installed to the usb on dev/sda (sda since no other drives attached). This should put it in the MBR (i think?)
Seems like I pressed all the right buttons huh? Is there a way to diagnose grub and see what's wrong? is there a reason grub may not initialize properly from a usb drive?
I just attempted to install ubuntu for the 4th and 5th time and have yet again had a fail. This time it actually completed the installation, which is a first. however upon reboot it takes me directly to Vista - I don't see grub or a o/s selection choice.
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