I had the same problem some time ago... I did a netboot (holding the 
left and right buttons on the back of the Qube2 while powering up) of a 
debian install image ... and fixed the partition. But of course you need 
to be near the Qube2  :-)

Here is the info and the files

http://devel.alal.com/pipermail/cobalt-22/2002-July/000298.html

you only need to netboot the qube2, telnet to it and select the shell 
option from the menu, then you'll be able to use fdisk

Hope I helps.
Regards,
Rodrigo

C. Tate Baumrucker wrote:

> Does anyone know the complete syntax for the Cobalt Raq2 boot command 
> bfd?
> I've most of the posts and FAQ and have seen the "bfd kernel.gz 
> nfsroot=nfsroot" command.
> This doesn't automatically cause my Raq2 to netboot, rather it tries 
> booting from disk first.
> The problem is that my disk is whacked and causes the boot process to 
> die in a db> prompt. 
> I was previously able to specify tpl0 as the boot device, but after 
> screwing up my disk via fdisk (d'oh), the system no longer gives me 
> the option of specifying the boot device, goes straight to the disk, 
> and crashes out to a db> prompt.
>
> I'm not currently in front of the system console now so I can't 
> include the console output for analysis.
> Thanks,
> Tate
>
>