On Fri, Aug 29, 2008 at 1:58 PM, Mark Belanger mark_belanger@ltx.comwrote:
Given that I have a machine with possibly multiple disks, each of which is bootable(has an MBR)....
Is there a command that will query the BIOS and tell me which disk is the default boot disk. BTW - this is x86.
The goal is to remotely reboot the workstation into the desired disk(which contain different centos versions).
tia,
-Mark
Just a thought ...
Check-out kexec and possibly grub.exe.
What you can do is build a RAM disk with grub.exe as the kernel and boot it with command line options that will boot any of your other disks. Kind of "neat" ....
I use it as part of anaconda / kickstart to re-flash the BIOS by booting up a DOS system (when flashrom does not [yet] work) and then boot back into the kickstart.
Unfortunately, kexec really only works in fairly recent kernels, however. So, that may be an issue for you.
-rak-