Messages in this thread | | | From | Andrey Borzenkov <> | Subject | Re: Which device did I boot from? | Date | Sat, 15 Apr 2006 14:30:40 +0400 |
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On Saturday 15 April 2006 13:43, Rene Herman wrote: > Andrey Borzenkov wrote: > >> If you choose the (experimental) CONFIG_EDD option in your kernel then, > >> with cooperation of your BIOS, you'll have a /sys/firmware/edd with at > >> least some info about the BIOS boot device. For me: > > > > I am sorry but it does not tell about boot device. It contains all hard > > disks enumerated via EDD interface. I do not see any information > > under /sys/firmware/edd that would have allowed to guess boot device. > > int13_dev80 is the bootdevice. Or that used to be the case with things > such as booting from SCSI at least. Don't know about booting from, say, > USB. >
OK. In this case udev creates links based on MBR signature; it can be used to infer real device:
{pts/0}% LC_ALL=C ll /dev/disk/by-id lrwxrwxrwx 1 root root 9 Apr 12 21:36 edd-int13_dev80 -> ../../hda lrwxrwxrwx 1 root root 10 Apr 12 21:36 edd-int13_dev80-part1 -> ../../hda1 lrwxrwxrwx 1 root root 10 Apr 12 21:36 edd-int13_dev80-part2 -> ../../hda2
Not sure about USB either.
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