how can I tell which storage device file (scsi) is the boot device?

Posted on 2009-04-03
Last Modified: 2013-11-14
From linux command-line, how can I tell which storage device file (scsi) is the boot device?
Question by:areyouready344
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Expert Comment

ID: 24062657
the decision to take which is the boot device, has to be taken by the machine:
How can the OS decide which partition to start if is has not been started ?
At bios level, if you can, before try in temporary mode (F12 or other),
decide which is the boot device. If it goes, modify in bios the boot order.

More difficult may be if you have more than one bootable partition in a disk,
or if you have a RAID adapter that manags more than one logical drive.

LVL 92

Expert Comment

ID: 24066497
you can check which files exist. depending on the OS, you find different files

Author Comment

ID: 24277784
To be more clear, lets say I have 3 storage devices seen by linux as /dev/sda /dev/sdb/ /dev/sdc, which one of these devices linux booted from?
LVL 92

Expert Comment

ID: 24277932
sorry - overlooked the linux part; not my fancy...

Accepted Solution

dolomiti earned 500 total points
ID: 24285402
which Linux is yours ? ,
and do you know which is your boot loader ?

(LILO, GRUB, ..., you can see just when BIOS has finished to start
and 1 moment before Linux boots; probably you can also read (very fast)
which device OS has booted from )


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