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#1 2012-02-08 15:13:31

seniorsassycat
Member
Registered: 2011-08-27
Posts: 76

[solved] kernel 3.2.4 unable to find root device

When booting i get the following message

Booting the kernel.
:: Starting udevd
done.
udevd[37]: No such file or directory
:: Running Hook [udev]
:: Triggering uevents...done.
Waiting 10 seconds for device /dev/disk/by-uuid/{id}...
ERROR: Unable to find root device '{id}'.
You are being dropped to a recovery shell

I'm not familiar with how the recovery shell works, or even where i am in the filesystem.
FIlesystem is 200mb ext2 boot, /root and /home are btrfs.

SOLVED: Had to boot into a live cd and reinstall the kernel.

Last edited by seniorsassycat (2012-02-08 18:37:54)

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#2 2012-02-08 17:48:25

senses3
Member
From: ohio
Registered: 2009-07-31
Posts: 9

Re: [solved] kernel 3.2.4 unable to find root device

Have you recently upgraded your kernel? Has the boot order in your bios changed? Did you try booting the fallback kernel image? I've never had this error happen to me before but it seems like your disk uuids are not correct.

Hopefully someone else will have better advice than me.

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#3 2012-02-08 17:57:29

seniorsassycat
Member
Registered: 2011-08-27
Posts: 76

Re: [solved] kernel 3.2.4 unable to find root device

senses3 wrote:

Have you recently upgraded your kernel? Has the boot order in your bios changed? Did you try booting the fallback kernel image? I've never had this error happen to me before but it seems like your disk uuids are not correct.

Hopefully someone else will have better advice than me.

I belive i recently upgraded the kernel, fallback image gives the same error, I havn't touched bios.

I think it is a disk issue, either corruption, or change of uuid. If it is the latter i should be able to fix it by changing the fstab, but I cant find it in single user mode, looking /dev shows no disks ( no sdx's ). Can someone show me a good article on single user mode, or tell me where to look for fstab or my disks?

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#4 2012-02-08 18:11:29

senses3
Member
From: ohio
Registered: 2009-07-31
Posts: 9

Re: [solved] kernel 3.2.4 unable to find root device

Check out this post: https://bbs.archlinux.org/viewtopic.php?pid=1054644

Sounds like you didn't build your kernel modules when you upgraded. Try booting from a livecd and reinstall the kernel

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#5 2012-02-08 18:23:47

elasticdog
Member
From: Washington, USA
Registered: 2005-05-02
Posts: 995
Website

Re: [solved] kernel 3.2.4 unable to find root device

seniorsassycat wrote:

When booting i get the following message

Booting the kernel.
:: Starting udevd
done.
udevd[37]: No such file or directory
:: Running Hook [udev]
:: Triggering uevents...done.
Waiting 10 seconds for device /dev/disk/by-uuid/{id}...
ERROR: Unable to find root device '{id}'.
You are being dropped to a recovery shell

I'm not familiar with how the recovery shell works, or even where i am in the filesystem.
FIlesystem is 200mb ext2 boot, /root and /home are btrfs.

Same exact thing happened to me this morning...I had done a bunch of updates yesterday (probably a month or two worth), integrated all the pacnew changes, rebooted and had no issues. Today I ran updates again, there was a new kernel that installed, I rebooted and got the above error as well. No other changes were made in between. Haven't fixed it yet, but wanted to say that seniorsassycat is not alone in seeing this.

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#6 2012-02-08 18:29:22

elasticdog
Member
From: Washington, USA
Registered: 2005-05-02
Posts: 995
Website

Re: [solved] kernel 3.2.4 unable to find root device

...and another person with the same thing happening: Unable to find root device - after updating

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#7 2012-02-08 18:36:31

seniorsassycat
Member
Registered: 2011-08-27
Posts: 76

Re: [solved] kernel 3.2.4 unable to find root device

senses3 wrote:

Check out this post: https://bbs.archlinux.org/viewtopic.php?pid=1054644

Sounds like you didn't build your kernel modules when you upgraded. Try booting from a livecd and reinstall the kernel

That was it, I booted up fine now.

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#8 2012-02-09 18:28:07

elasticdog
Member
From: Washington, USA
Registered: 2005-05-02
Posts: 995
Website

Re: [solved] kernel 3.2.4 unable to find root device

elasticdog wrote:

Same exact thing happened to me this morning...I had done a bunch of updates yesterday (probably a month or two worth), integrated all the pacnew changes, rebooted and had no issues. Today I ran updates again, there was a new kernel that installed, I rebooted and got the above error as well. No other changes were made in between.

So my issue was user error when I migrated the pacnew changes in mkinitcpio.conf...I had left out the lvm2 hook, so it couldn't find my root filesystem. As other people have said, I just used the Arch installation CD to rescue the system...the instructions you'll need are on the Wiki in case anyone else runs across this:

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#9 2014-06-06 18:52:51

ZiDoM
Member
Registered: 2014-04-07
Posts: 18

Re: [solved] kernel 3.2.4 unable to find root device

I am having same problem but on reinstalling kernel i get
Building imagr from preset: /etc/mkinitcpio.d/linux.preset default etc
Invalid config: No hooks found
my kernel is 3.14.5-1 the latest one

Last edited by ZiDoM (2014-06-06 19:01:25)

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#10 2014-06-06 21:15:46

clfarron4
Member
From: London, UK
Registered: 2013-06-28
Posts: 2,147
Website

Re: [solved] kernel 3.2.4 unable to find root device

ZiDoM wrote:

I am having same problem but on reinstalling kernel i get
Building imagr from preset: /etc/mkinitcpio.d/linux.preset default etc
Invalid config: No hooks found
my kernel is 3.14.5-1 the latest one

Please start a new thread. This is from 2012 and a lot has changed since then.


Claire is fine.
Problems? I have dysgraphia, so clear and concise please.
My public GPG key for package signing
My x86_64 package repository

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#11 2014-06-06 21:18:41

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 12,252

Re: [solved] kernel 3.2.4 unable to find root device

Closing....  As clfarron4 aptly points out, please feel free to start a new thread and link back to this one as appropriate
https://wiki.archlinux.org/index.php/Fo … Bumping.22


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