both booted fine and scanned my system all looked well until

	I got an error: 
	wdOc DMA error reading fsbn 0 (wd0 bn 0 ; cn0 tn 0 sn 0), retrying
	pciide0:0:0: lost interupt

	"this repeats several times the from the output reads

	wd0c: device timeout reading fsbn 0 (wd0 bn 0 ; cn0 tn 0 sn 0)
	wd0: disk label read error
	mountroot: trying msdos...
	mountroot: trying cd9660...
	mountroot: trying lfs...
	mountroot: trying nfs...
	mountroot: trying ffs...
	no file system for wd0 (dev 0xc06)
	cannot mount root, error = 79

This is a known problem with 1.5.  There is a bug in the
wd driver where it does not properly reset the disk, so
it becomes unusable if that's the device you booted from.

You have two choices: 

Try to netboot, or try the 20010114 snapshot.  I think that
has that wd bug fixed.

Eduardo