recovering data from old hard drive
elson at pico-systems.com
Sun Jan 26 18:36:38 CST 2020
On 01/26/2020 01:13 PM, Grant Taylor via cctalk wrote:
> On 1/25/20 12:57 PM, Jon Elson via cctalk wrote:
>> I have dug out an old SCSI hard drive from 1997 that may
>> have some interesting stuff, most especially the source
>> code for the SGI Iris flight sim demo. I have a Linux
>> system with an Adaptec 2940 (aic7880) that has two
>> connectors on it. It SEEMS from some probing that the
>> 50-pin IDC connector on the top of the board is
>> single-ended SCSI (it seems to have mostly grounds on one
>> row of pins). Same for the drive, which is a Quantum
>> ProDrive LPS. The drive spins up and does some seeking
>> right after power-on, so it sounds like it is working.
>> But, I can't seem to find that the drive is being
>> recognized by the aic7xxx driver. So, looking at
>> /proc/scsi/aic7xxx/## I see the device addresses all show
>> just the negotiation settings, and /proc/scsi/scsi just
>> shows my SATA devices but not the real SCSI ones.
> I believe Adaptec 2940s were all Single Ended. I /think/
> the differential cards that they made had a different number.
> Go into the cards BIOS (firmware?) and poke around. Does
> the card see the drive?
Well, I set up another machine with a different Adaptec 2940
and was able to read two SCSI drives that had not spun
in 22 years! Unfortunately, I could not find the files I
was looking for, but I backed up the entire contents anyway.
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