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

2020-09-26 Thread Jules Richardson via cctech
On 9/26/20 10:32 AM, Michael Engel via cctech wrote: Using DOS might be another option, I seem to hit a roadblock with every Unix version I try... hmm, have a look here: http://ftp.vim.org/ftp/pub/ibiblio/kernel/patches/scsi ... adaptec-40XX-1.02.tar.gz looks like it might do the trick. Use

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

2020-09-26 Thread Jules Richardson via cctech
On 9/26/20 10:56 AM, Al Kossow via cctech wrote: ACB4000s aren't common command set. it expects the driver to tell it the drive parameters I'm possibly/probably wrong, but I thought the ACB-4000 only needs the parameters setting prior to format - I don't know it it has some form of non

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

2020-09-26 Thread Al Kossow via cctech
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

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

2020-09-26 Thread Michael Engel via cctech
On 9/26/20 5:22 AM, Grant Taylor via cctalk wrote: On 9/25/20 10:38 AM, Glen Slick via cctalk wrote: If the Adaptec 2940 BIOS seems to detect the disk I wonder what would happen if DOS was set up on the system and ASPI8DOS.SYS was loaded. Would the Adaptec 2940 and ASPI driver respect the

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

2020-09-25 Thread Glen Slick via cctech
On Wed, Sep 23, 2020 at 11:51 AM Michael Engel via cctech wrote: > > Hi, > > still working on backing up the Tektronix 440x disks. My current problem > is that the ACB4000 SCSI-to-MFM adapter doesn´t support SCSI parity. > > I finally managed to find a PCI SCSI controller (Adaptec 2940) and a >

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

2020-09-24 Thread Grant Taylor via cctech
On 9/24/20 12:15 PM, Jules Richardson via cctech wrote: the Linux kernel at least has depended on it for a very long time Do you have any idea how far back one might need to go to get a kernel that didn't depend on SCSI Inquiry? I wonder if a retro computer with a really old kernel and a

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

2020-09-24 Thread Jules Richardson via cctech
On 9/23/20 3:28 PM, Michael Engel via cctech wrote: It seems that the problem lies in the firmware of the ACB4000, which doesn´t seem to support some standard commands, e.g. the INQUIRY command. Most recent Linux SCSI drivers seem to use this command. Lack of Inquiry support seems to be quite

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

2020-09-24 Thread Camiel Vanderhoeven via cctech
> On Sep 23, 2020, at 10:28 PM, Michael Engel via cctech > wrote: > > > > On 9/23/20 8:54 PM, Grant Taylor via cctech wrote: >> On 9/23/20 12:51 PM, Michael Engel via cctech wrote: >>> Do you know if is there another OS which would make it easier to change >>> crucial SCSI parameters in

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

2020-09-23 Thread Plamen Mihaylov via cctech
I have the same problem with Torch Triple X disk which uses OMT SCSI/MFM adapter. I believe the best solution is to use David’s MFM emulator board. Best regards, Plamen On Wednesday, September 23, 2020, Michael Engel via cctech < cctech@classiccmp.org> wrote: > > > On 9/23/20 8:54 PM, Grant

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

2020-09-23 Thread Josh Dersch via cctech
On Wed, Sep 23, 2020 at 1:28 PM Michael Engel via cctech < cctech@classiccmp.org> wrote: > > > On 9/23/20 8:54 PM, Grant Taylor via cctech wrote: > > On 9/23/20 12:51 PM, Michael Engel via cctech wrote: > >> Do you know if is there another OS which would make it easier to > >> change crucial SCSI

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

2020-09-23 Thread Michael Engel via cctech
On 9/23/20 8:54 PM, Grant Taylor via cctech wrote: On 9/23/20 12:51 PM, Michael Engel via cctech wrote: Do you know if is there another OS which would make it easier to change crucial SCSI parameters in the driver (config) or maybe a specialized tool that could help me to image the disk?

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

2020-09-23 Thread Grant Taylor via cctech
On 9/23/20 12:51 PM, Michael Engel via cctech wrote: Do you know if is there another OS which would make it easier to change crucial SCSI parameters in the driver (config) or maybe a specialized tool that could help me to image the disk? Try booting off of a Linux live CD / DVD and seeing if