On 2010年06月25日 13:57, LFS Trac wrote:
> #2698: Small update on the grub-page (8.4.)
> ----------------------+-----------------------------------------------------
> Reporter: splotz90 | Owner: lfs-b...@…
> Type: task | Status: closed
> Priority: normal | Milestone: 6.7
> Component: Book | Version: SVN
> Severity: normal | Resolution: invalid
> Keywords: |
> ----------------------+-----------------------------------------------------
>
> Comment(by splotz90):
>
> The search command does something for LFS ...
>
> This command set the root-device for GRUB to hd0,1:
> {{{
> set root=(hd0,1)
> }}}
>
>
> After that GRUB will look for a partiton with the UUID ''06910bbb-95ff-
> 43f7-ac74-d44fe9caecf1'':
>
> {{{
> search --no-floppy --fs-uuid --set 06910bbb-95ff-43f7-ac74-d44fe9caecf1
> }}}
>
> If there's no partition with this UUID, GRUB will use the device set
> before (hd0,1). If a partition with this UUID exists, GRUB will boot from
> this partiton. In the most cases the partition set with the first command
> will have the UUID in the search command.
>
> This means: GRUB can boot if the device has changed (for example hd0,1 -->
> hd1,1) and if a new filesystem was created.
>
Oh, yes. Now I understand. The "search --set {uuid}" command is used by
grub itself, it has nothing to do with kernel's parameters or initrd.
Some days ago, I encountered a problem: I had changed set root=(hd0, x)
to set root=(hd0, y), but grub still booted the kernel in (hd0, x)
partition, I didn't know why, now I get the answer(I have the search
line in my grub.cfg file).
Thank you.
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