3b2 hards drives

[Cyro Lord]

Ok, I have a 72 meg CDC Wren II drive and tried to install it
using 'idtools'. The format seemed to go fine and so did the verify.
This is on a 3b2/310. I used the these params:
id 5
cyl 925
trk/cyl 9
sec/trk 18
bytes/trk 512
Then entered the bad track list and the software returned ok from
verify ok. What does one do next? I tried to mkfs and received this:
Bad sanity word in Vtoc on drive 1
followed by 'mkfs' trying to make a file systems but bombing out with
a read error. I must not be doing this correctly. Any help?
The drive is the same as the 72meg number 0 drive.
Model # 94155-086
Thanks.
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