13 Jun
2001
13 Jun
'01
9:25 a.m.
Though it's quite possible, and, in fact, likely, the drive is dead, the thing
proclaims itself to be a Western Digital 1006V SCS... (that's all the space the
ADAPTEC software allows for name) and it responds to a select, though it thinks
it's not spinning up, and I agree, since I can't hear it spin up. I'm not
convinced 1006V is a WD drive name, though it fits into the pattern of their
bridge controller series. If I could get the drive enclosure opened up, I'd
know right away. A 20 MB drive, though possibly handy for a small CP/M system,
is otherwies of little interest, so I'm not worried about the drive. I'd like
to know about the bridge controller, if there is one, though. The last two
Apple-compatible drive enclosures I took apart used a bridge. I also have a
couple that don't use a bridge, however, so anything's possible.
Dick
----- Original Message -----
From: "Mike Ford" <mikeford(a)socal.rr.com>
To: <classiccmp(a)classiccmp.org>
Sent: Wednesday, June 13, 2001 1:37 PM
Subject: Re: old external Apple drive
>When my WD20AP unit is attached to an ADAPTEC
AHA1542B under DOS and
>allowed to
>boot with the drive turned on, it "sees" and reports the presence of a
device,
WD-1006-something which it later reports it can't spin up.
OK, pretty common item, a zero footprint, ie it sits under a compact mac
like the Plus, and inside is a bare SCSI drive and power supply, no bridge
thingy, just wires to the SCSI drive from the connectors and ID switch. The
failure mode is about 3:1 drive vs power supply, so many are like yours,
talks but doesn't spin.
If you replace the drive, and the power supply is still good, they are
pretty handy to have around in a mac environment, since almost all macs
support external SCSI devices you can put one of the early flexible OS
releases like 7.5.3 on a small hard drive and then use it to boot test
systems etc. With a larger drive it is handy to both boot old systems, and
to make quick copies of the internal hard drive before formatting etc.