Damn unmouted root

Damn unmouted root

[John T. Williams]

I've been having the hardest time getting a kernel I've compiled to
work.  I've compiled kernels at least a dozen times and this is the
first one that has given me any real trouble.  I think the issue might
be the scsi hard-drive.  

I've compiled in scsi support ( actually in, not as module ), but every
time I try to boot the kernel, i get the error 

VFS unable to mount root fs on /dev/hdf1

and a kernel panic.  

the kernel uses devfs and I'm passing the kernel 

root=/dev/hdf1 devfs=mount 

as I said, I'm pretty sure its the scsi harddrive that is giving me
problems as its the only thing in this situation that I've never had to
deal with before, but even with that insight I haven't been able to
figure out how to get the kernel.

Thanks,
John 

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Re: Damn unmouted root

[Ken]

Hi,

* John T. Williams (jowillia@vt.edu) wrote:
> VFS unable to mount root fs on /dev/hdf1

Try it with your filesystem type (ex3,reiserfs) compiled in (not as module).

greets


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Re: Damn unmouted root

[Beolach]

I've never myself done anything w/ SCSI drives (other than ide-scsi
emulation for CD-Writing pre kernel 2.6), but I thought SCSI harddrives
were usually /dev/sd?, while IDE drives were /dev/hd?.

From /usr/src/linux-2.6.7/Documentation/devices.txt:

  8 block       SCSI disk devices (0-15)
                  0 = /dev/sda          First SCSI disk whole disk
                 16 = /dev/sdb          Second SCSI disk whole disk
                 32 = /dev/sdc          Third SCSI disk whole disk
                    ...
                240 = /dev/sdp          Sixteenth SCSI disk whole disk

                Partitions are handled in the same way as for IDE
                disks (see major number 3) except that the limit on
                partitions is 15.

Good luck,
Conway S. Smith


John T. Williams wrote:
> I've been having the hardest time getting a kernel I've compiled to
> work.  I've compiled kernels at least a dozen times and this is the
> first one that has given me any real trouble.  I think the issue might
> be the scsi hard-drive.  
> 
> I've compiled in scsi support ( actually in, not as module ), but every
> time I try to boot the kernel, i get the error 
> 
> VFS unable to mount root fs on /dev/hdf1
> 
> and a kernel panic.  
> 
> the kernel uses devfs and I'm passing the kernel 
> 
> root=/dev/hdf1 devfs=mount 
> 
> as I said, I'm pretty sure its the scsi harddrive that is giving me
> problems as its the only thing in this situation that I've never had to
> deal with before, but even with that insight I haven't been able to
> figure out how to get the kernel.
> 
> Thanks,
> John 
> 
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Re: Damn unmouted root

[Ray Olszewski]

At 10:55 PM 6/24/2004 -0400, John T. Williams wrote:
>I've been having the hardest time getting a kernel I've compiled to
>work.  I've compiled kernels at least a dozen times and this is the
>first one that has given me any real trouble.  I think the issue might
>be the scsi hard-drive.
>
>I've compiled in scsi support ( actually in, not as module ), but every
>time I try to boot the kernel, i get the error
>
>VFS unable to mount root fs on /dev/hdf1
>
>and a kernel panic.
>
>the kernel uses devfs and I'm passing the kernel
>
>root=/dev/hdf1 devfs=mount
>
>as I said, I'm pretty sure its the scsi harddrive that is giving me
>problems as its the only thing in this situation that I've never had to
>deal with before, but even with that insight I haven't been able to
>figure out how to get the kernel.


With absolutely no details provided, either about the kernel you are 
compiling or the system you are trying to run it on (or what Linux distro 
is involved), all one can really do is make "obvious" comments. In that 
spirit -- it is unusual for scsi drives to use "hd**" devices. They usually 
are "sd**" devices. Might you have made an error of that sort?

If your problem is not that, or the lack of filesystem support someone else 
suggested, please try posting a description that includes the details ... 
including why you believe your root scsi drive is accessed as /dev/hdf .



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