[linux-lvm] Determine boot disk device name...
malahal at us.ibm.com
Tue Oct 26 18:41:39 UTC 2010
Alexander Skwar [alexanders.mailinglists+nospam at gmail.com] wrote:
> 2010/10/25 Malahal Naineni <malahal at us.ibm.com>
> Alexander Skwar [alexanders.mailinglists+nospam at gmail.com] wrote:
> > I also wanted to suggest this, but…
> > benutzer at horst:~$ cat /proc/cmdline
> > root=/dev/xvda1 ro
> I got confused with boot and root! Thanks for correction. Usually boot
> disk is mounted at /boot. Your boot disk could be same as root disk (in
> this case there would not be anything mounted at /boot but just a
> Well, but even the location of the /boot directory/partition doesn't
> necessarily tell, from where someone booted - suppose, you've got
> a boot disk /dev/sda. On /dev/sda, there's grub. Grub's setup so,
> that it boots a system/kernel, which is on /dev/sdb. The system
> is "self contained" on /dev/sdb.
> In such a case, the system would've been booted from /dev/sda,
> but there's no way to tell that, once the "/dev/sdb system" has
> been started - or is there?
Once loader's job is done, it is not needed and I don't think there is a
way to find out your boot disk in all __situations__ as I said before.
In fact, you can use a USB disk as your boot disk and remove it after
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