----- Original Message ----- From: "Dave Sherohman" <esper@sherohman.org> To: "Debian User List" <debian-user@lists.debian.org> Sent: Monday, October 08, 2001 4:52 PM Subject: Re: Kernel Panic: VFS Unable to mount root fs on 21:04 > On Sat, Oct 06, 2001 at 02:17:20PM -0400, Stan Brown wrote: > > I'm trying to set up a new machine this weekend, and i'm in trouble. > > I know you needed a solution by Monday, so this is a bit late, but I > haven't seen anyone else post an explanation of what the error > actually means, so... > > > Now, I have a problem. The machine will no longer boot from the hard disk. > > I get the message from the subject line. I can boot it from the boot > > floppy. > > lilo (or something else) is telling the kernel to mount / from device > 21:04 and the kernel doesn't know how to do that. According to > Documentation/devices.txt in my kernel source tree, major device 21 > is the generic SCSI subsystem and minor device 04 in that system is > the fifth device, so 21:04 would be /dev/sg4 (or /dev/sge). Either > a) you don't have generic SCSI support in your kernel, b) you don't > have five generic SCSI devices, or c) you have to boot off a SCSI > drive (/dev/sd*), not a generic SCSI device (/dev/sg*). Hmm, maybe the kernel has no support for your scsi card/devices, yes. BTW, probably the magic number written to the real-root-dev file is the magic number description for your root device (every device in Linux can be described by such a number combination - for the numbering system see attached file devices.txt, the format in the real-root-dev file is for example for /dev/hdb1: 0x365). Cheers, Stephan
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