Red Hat Bugzilla – Bug 1012371
Cannot set root device on kernel command line
Last modified: 2015-02-17 12:21:36 EST
My hard drive died. I did a full restore to a different drive.
The UUID of my root file system is now different, so mount-by-UUID fails. Not a problem; I'll just edit the command line in grub, and change the existing 'root=UUID=...' on the command line to 'root=/dev/sda7'.
Would be nice if the initrd actually *honoured* this, instead of still finding that original UUID somewhere and trying to mount that.
I eventually resorted to *changing* the file system's UUID to match the old one, because I couldn't work out how to make it mount the *right* file system and continue. I really shouldn't have had to do that.
Isn't that just caused by the entry in /etc/fstab; the file on the rootfs not
I personally just have:
ROOT / auto defaults 0 0
there, because the actual device field is not needed at all, and ignored if it
does not start with /.
Dracut, or the kernel, has mounted the device already, so the duplicated
entry seems pointless, and might just be the cause of your problem.
If that is the reason, anaconda should probably stop doing that.
Boot speed is improved by removing unused features from the initramfs. If new hardware is added, boot into the rescue initramfs and use the command dracut --regenerate-all --force to rebuild and replace the old initramfs.
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