Disabling SCSI parity checking to dump disk on ACB4000 MFM-SCSI adapter?

Al Kossow aek at bitsavers.org
Sat Sep 26 10:59:25 CDT 2020

On 9/26/20 8:56 AM, Al Kossow via cctech wrote:
>> sd3: non-CCS device found at target 0 lun 0 on esp0
>> sd3: at esp0 target 0 lun 0
>> sd3: corrupt label - wrong magic number
>> sd3: Vendor ´ADAPTEC*´, product ´ACB4000*********´, 181520 512 byte blocks
> ACB4000s aren't common command set.
> it expects the driver to tell it the drive parameters
> just get a gesswein mfm emulator already..
> this is a trivial data recovery job for it

i'm sorry if this offends you, but i watched the whole thread on vcf unfold
where the guy screwed around with his rare copy of viasyn ccpm until he wiped
out a part of it

you ARE doing this with write-gate cut on the cable, right?

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