From owner-freebsd-questions@FreeBSD.ORG  Sun Apr  3 17:51:47 2005
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Date: Sun, 03 Apr 2005 13:52:35 -0400
From: Keith Rackleff <rackleff@adelphia.net>
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Subject: Unable to find device node for /dev/ad0s1b in /dev!
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I had this same type problem.  It appears that FreeBSD and the BIOS did 
not select the proper geometry for the disk.  I tried a different disk 
on the same system, and I was able to install. 

Knopptix reported a different geometry than FreeBSD, so I tried setting 
the geometry to match what Knopptix reported, but, the installation 
graphical fdisk told me the Knopptix geometry was "unrealistic", and set 
it back to the BIOS geometry. 

I installed the system on a different drive, and then used the command 
line fdisk command to partition the disk with the Knopptix geometry.  I 
was then able to set the labels and mount the errant drive. 


Keith