Re: Which device did I boot from?

[Dallas Clement]

Unfortunately, I'm trying to determine the boot device from within
initramfs.  None of the devices have been mounted yet.

I'm wanting to do this from an init/installation script that will
install Linux on any device other than the boot device.  Obviously, I
don't want to install over the top of my boot device.  Hence, wanting to
figure out which is the boot device.

Thanks for the help.

-Dallas

On Fri, 2007-06-22 at 18:03 +0200, Benoit Donnette wrote:
> Well, I can suggest a fairly indirect method :
> 
> cat /proc/mounts indicates which filesystems are mounted
> look for '/' mountpoint.
> 
> (I assume that your kernel lies in Linux' /boot/kernel/bzImage).
> 
> Benoît.
> 
> > Can anyone tell me how to determine which device Linux booted from.  I
> > am using GRUB to boot Linux.  My menu.lst config is this:
> >
> > title           GNU/Linux, kernel 2.6.21.1
> > root            (hd0,0)
> > kernel          /boot/kernels/bzImage
> >
> > Once booted from Linux, I would like to be able to tell which Linux
> > device, i.e. /dev/hdx or /dev/sdx corresponds to hd0.
> >
> > Is there a way to determine this?
> >
> > Thanks!
> >
> >
> >
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> >
> 
>