[SOLVED] Can't find root partition after upgrade

After upgrading to Linux 3.6.6, the boot fails with something like "can't find root, UUID=..." and I get a root shell. Choosing to recovery mode in GRUB doesn't make a difference.
I don't have any sda devices in /dev.
/proc/partitions is empty.
I have Macbook Pro 7,1.
Ubuntu on other partition works.
Any idea how to fix this?
Last edited by dontbugme (2012-11-08 17:53:46)

dontbugme wrote:Now I realize that I did a probably stupid thing. I removed mdadm and lvm2 thinking that I don't need them. So the mdadm kernel module is missing. Could this be the problem? I don't use RAID or LVM.
I don't use these either ... but this does sound like a very plausible cause of this error. Are you sure you aren't using either?
In any case, it's easy enough to add them back and see if that solves this. Boot into live media, chroot, add back the modules to mkinitcpio.conf and rebuild the initramfs. If nothing else this would verify that these are not the problem.

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[SOLVED] "Can't find root device" after hardware change

My old computer died so I got a replacement. The only hardware changes were the motherboard/CPU and a lack of GPU (since it died too). GRUB was setting root to /dev/sda2, but in this new computer that wouldn't work. I figured I'd change it to /dev/disk/by-label, but it still won't boot. I have udev loaded in mkinitcpio.conf and have tried what I could find on google (it had to do with pacman mostly, which is not the issue here).
I'm currently running a gparted parted magic live disc and checked already if the partition is corrupted; it isn't.
What should I be looking at to get by-label working? What kind of info do I need to provide in order to get some help (fdisk, blkid, etc)?
Thanks in advance.
Last edited by knuck (2012-08-19 02:07:01)

Are you sure that that label/partition still exists? (e.g. your filesystem hasn't gotten corrupted)
Have you rebuilt the initramfs since you changed hardware (e.g. via chroot)? If not, try booting using the fallback image.
All you should need to do to get booting by label is change the root= statement in the bootloader's kernel params to
root=LABEL=arch
the initram image's code should handle the rest at boot time.

[SOLVED]Failed to find root device after linux (3.6) upgrade on raid 1

on a test machine pacman -Syu offers linux-3.6.2-1.
After a successfull update the system won't boot anymore with the following error:
[ 0.000000] tsc: Fast TSC calibration failed
:: running early hook [udev]
:: running hook [udev]
:: triggering uevents...
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LABEL arch
MENU LABEL Arch Linux
LINUX ../vmlinuz-linux
APPEND root=/dev/md1 ro md=0,/dev/sdb2,/dev/sdc2 md=1,/dev/sdb3,/dev/sdc3 md=2,/dev/sdb4,/dev/sdc4
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Last edited by whoop (2012-10-16 22:51:05)

If I upgrade to linux 3.6 with this line:
HOOKS="base udev autodetect pata scsi sata mdadm filesystems usbinput fsck"
in /etc/mkinitcpio.conf, the system is able to boot.
if I upfate to linux 3.6 with this line:
HOOKS="base udev autodetect pata scsi sata mdadm_udev filesystems usbinput fsck"
in /etc/mkinitcpio.conf the system is not able to boot.
I gathered that the mdadm_udev hook was preferred but it seems to cause problems in this case.
After I successfully upgrade (having "mdadm" in /mkinitcpio.conf) I can change "mdadm" to "mdadm_udev" and
the system will still boot fine.
Does somebody know what gives?
Last edited by whoop (2012-10-16 00:13:07)

Can't find BBM Icon after upgrade on Torch 9850

Hello all
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Solved!
Go to Solution.

Very sorry, I misread, as the AppWorld missing icon has been prevelant for many, and I jumped in with that solution too quickly.
Do this,
from your Options > Device > Application, scroll to and delete BBMessenger.
Do a simple reboot on the BlackBerry in this manner: With the BlackBerry device POWERED ON, remove the battery for a minute, and then reinsert the battery to reboot.
The, after reboot, using your BlackBerry browser, go to www.blackberry.com/bbm and download/install again.
Again, my apologies for the initial misunderstanding.
1. If any post helps you please click the below the post(s) that helped you.
2. Please resolve your thread by marking the post "Solution?" which solved it for you!
3. Install free BlackBerry Protect today for backups of contacts and data.
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Join our BBM Channels (Beta)
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In Windows, go to Control Panel -> System. Do you see a Boot Camp option? If you do not, please download BC drivers as appropriate for you specific Mac year/model System requirements to install Windows on your Mac via Boot Camp - Apple Support
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Grub can't find root device after system update today (12/30)

I did a system update (kernel was updated to 2.6.32) today and turned off my computer. When I tried to boot up, Grub said it couldn't find my root device (/dev/sdb3) which is on my external hard drive. Grub and my kernel is on my external hard drive too (/dev/sdb1) so the hard drive itself seems to be working. If it'll help, here are my hooks:
HOOKS="base udev autodetect pata scsi sata usb filesystems"

This is from pacman.log, from when I updated on 12/30.
[2009-12-30 10:19] synchronizing package lists
[2009-12-30 10:20] starting full system upgrade
[2009-12-30 10:29] upgraded consolekit (0.4.1-1 -> 0.4.1-2)
[2009-12-30 10:29] upgraded hdparm (9.27-1 -> 9.27-2)
[2009-12-30 10:29] upgraded libdrm (2.4.16-1 -> 2.4.17-2)
[2009-12-30 10:29] upgraded libgl (7.6-2 -> 7.7-1)
[2009-12-30 10:29] upgraded intel-dri (7.6-2 -> 7.7-1)
[2009-12-30 10:29] upgraded kernel26-firmware (2.6.31-1 -> 2.6.32.2-2)
[2009-12-30 10:29] >>> Updating module dependencies. Please wait ...
[2009-12-30 10:29] >>> MKINITCPIO SETUP
[2009-12-30 10:29] >>> ----------------
[2009-12-30 10:29] >>> If you use LVM2, Encrypted root or software RAID,
[2009-12-30 10:29] >>> Ensure you enable support in /etc/mkinitcpio.conf .
[2009-12-30 10:29] >>> More information about mkinitcpio setup can be found here:
[2009-12-30 10:29] >>> http://wiki.archlinux.org/index.php/Mkinitcpio
[2009-12-30 10:29]
[2009-12-30 10:29] >>> Generating initial ramdisk, using mkinitcpio. Please wait...
[2009-12-30 10:29] ==> Building image "default"
[2009-12-30 10:29] ==> Running command: /sbin/mkinitcpio -k 2.6.32-ARCH -c /etc/mkinitcpio.conf -g /boot/arch/kernel26.img
[2009-12-30 10:29] :: Begin build
[2009-12-30 10:29] :: Parsing hook [base]
[2009-12-30 10:29] :: Parsing hook [udev]
[2009-12-30 10:29] :: Parsing hook [autodetect]
[2009-12-30 10:29] :: Parsing hook [pata]
[2009-12-30 10:29] :: Parsing hook [scsi]
[2009-12-30 10:29] :: Parsing hook [sata]
[2009-12-30 10:29] :: Parsing hook [usb]
[2009-12-30 10:29] :: Parsing hook [filesystems]
[2009-12-30 10:29] :: Generating module dependencies
[2009-12-30 10:29] :: Generating image '/boot/arch/kernel26.img'...SUCCESS
[2009-12-30 10:29] ==> SUCCESS
[2009-12-30 10:29] ==> Building image "fallback"
[2009-12-30 10:29] ==> Running command: /sbin/mkinitcpio -k 2.6.32-ARCH -c /etc/mkinitcpio.conf -g /boot/arch/kernel26-fallback.img -S autodetect
[2009-12-30 10:29] :: Begin build
[2009-12-30 10:29] :: Parsing hook [base]
[2009-12-30 10:29] :: Parsing hook [udev]
[2009-12-30 10:29] :: Parsing hook [pata]
[2009-12-30 10:29] :: Parsing hook [scsi]
[2009-12-30 10:30] :: Parsing hook [sata]
[2009-12-30 10:30] :: Parsing hook [usb]
[2009-12-30 10:30] :: Parsing hook [filesystems]
[2009-12-30 10:30] :: Generating module dependencies
[2009-12-30 10:30] :: Generating image '/boot/arch/kernel26-fallback.img'...SUCCESS
[2009-12-30 10:30] ==> SUCCESS
[2009-12-30 10:30] upgraded kernel26 (2.6.31.6-1 -> 2.6.32.2-2)
[2009-12-30 10:30] upgraded libgcrypt (1.4.4-2 -> 1.4.5-1)
[2009-12-30 10:30] installed parted (1.9.0-3)
[2009-12-30 10:30] installed libatasmart (0.17-1)
[2009-12-30 10:30] installed devicekit-disks (009-3)
[2009-12-30 10:30] installed gnome-disk-utility (2.28.1-1)
[2009-12-30 10:30] installed gvfs (1.4.3-1)
[2009-12-30 10:30] upgraded libgnome (2.28.0-1 -> 2.28.0-2)
[2009-12-30 10:30] upgraded libsndfile (1.0.20-3 -> 1.0.21-1)
[2009-12-30 10:30] upgraded mesa (7.6-2 -> 7.7-1)
[2009-12-30 10:30] upgraded mono (2.6-1 -> 2.6.1-1)
[2009-12-30 10:30] upgraded mtasc (20080105-1 -> 20091229-1)
[2009-12-30 10:30] upgraded nano (2.2.0-1 -> 2.2.1-1)
[2009-12-30 10:31] upgraded netbeans (6.8-1 -> 6.8-2)
[2009-12-30 10:31] upgraded pycups (1.9.46-2 -> 1.9.47-1)
[2009-12-30 10:31] upgraded system-config-printer-common (1.1.13-1 -> 1.1.15-1)
[2009-12-30 10:31] upgraded system-config-printer-gnome (1.1.13-1 -> 1.1.15-1)
[2009-12-30 10:31] upgraded totem (2.28.4-1 -> 2.28.5-1)
[2009-12-30 10:31] upgraded tzdata (2009s-1 -> 2009t-1)
[2009-12-30 10:31] upgraded xorg-server (1.7.3.901-1 -> 1.7.3.902-1)
I'll try running mkinitcpio though.
Edit: from the chroot'd shell:
[ root@ubuntu ] [ / ]
[ # ] > mkinitcpio -p kernel26
==> Building image "default"
==> Running command: /sbin/mkinitcpio -k 2.6.32-ARCH -c /etc/mkinitcpio.conf -g /boot/arch/kernel26.img
:: Begin build
:: Parsing hook [base]
:: Parsing hook [udev]
:: Parsing hook [autodetect]
:: Parsing hook [pata]
:: Parsing hook [scsi]
:: Parsing hook [sata]
:: Parsing hook [usb]
:: Parsing hook [filesystems]
:: Generating module dependencies
:: Generating image '/boot/arch/kernel26.img'...SUCCESS
==> SUCCESS
==> Building image "fallback"
==> Running command: /sbin/mkinitcpio -k 2.6.32-ARCH -c /etc/mkinitcpio.conf -g /boot/arch/kernel26-fallback.img -S autodetect
:: Begin build
:: Parsing hook [base]
:: Parsing hook [udev]
:: Parsing hook [pata]
:: Parsing hook [scsi]
:: Parsing hook [sata]
:: Parsing hook [usb]
:: Parsing hook [filesystems]
:: Generating module dependencies
:: Generating image '/boot/arch/kernel26-fallback.img'...SUCCESS
==> SUCCESS
[ root@ubuntu ] [ / ]
[ # ] > ls /boot/arch
kernel26-fallback.img kernel26.img
I'll try booting with both the disk by UUID and the disk named as /dev/sdb3 in the Grub commands.
Last edited by megajosh2 (2010-01-02 00:17:45)

ITunes can't find my playlists after upgrading to 10.3. Help!

iTunes automatically upgraded to 10.2.2. When it finished, none of my data was visible. No music or play lists.
After checking the web, it was suggested up re-boot the computer. Didn't change anything.
Another suggestion was to re-install iTunes. When I did so, it showed 10.3 available. So I downloaded and intalled that. Still no existing information showing.
So I had iTunes search for my music. It found some/all of it. Haven't checked yet.
But NO playlists. Is there a way to find them and load or am I just screwed by the upgrade and have to start over?
Thanks for any help you might have on this.
Thanks!

I would recommend you put everything including th eiTune slibrary files into the iTunes folder on the external.
This way, you will not have any issues when moving th eHD anywhere else. The entire library will be on it.
Quit iTunes.
Copy the entire /Music/iTunes/ from yoru internal to the external.
Move your current iTunes media folder on the external into the /iTunes/ folder you just copied to the external.
Hold Option and launch iTunes.
Select Choose library and select the iTunes folder on the external.
Now you can plug in the external to another/new computer and launch iTunes holding option as above and everything will be there.

I can't find my music after upgrading to Lion

Can anyone help me recover my music?

I upgraded to Lion and now my Itunes is empty, I cant find previous installs to revert to and I still have the music on my Ipod.

Can't find email attachments after upgrading my ipad to IOS 7.1

I use my ipad onstage for song lyrics and set order. I compose and edit the song lyric sheets in Word on my PC, email the files to myself as attachments, and open them in Word on my ipad. Until this morning, I had no problem doing this. After I upgraded to IOS 7.1 this morning, my emails on my ipad (latest version) all have the attachment paperclip greyed out. Does anyone know what setting to adjust so I can access them again??

Have you tried restarting or resetting your iPad?
Restart: Press On/Off button until the Slide to Power Off slider appears, select Slide to Power Off and, after It shuts down, press the On/Off button until the Apple logo appears.
Reset: Press the Home and On/Off buttons at the same time and hold them until the Apple logo appears (about 10 seconds).
No data will be lost.

[SOLVED] Can't find root partition after upgrade

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