General Category > LisaList2

Corvus HDDs and the Lisa

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sigma7:
This looks like it could be the source of the error message...

Line 321

--- Code: ---if (status = addr->d_ira) {
err:
printf("%s error: /dev/c%d%c blkno=%d\n",
bp->b_flags&B_READ?"read":"write", punit,
'a'+logical(bp->b_dev), bp->b_blkno);
cvlog(status);

--- End code ---

If you can find where cvlog is sending it, hopefully the "status" obtained from the drive after the read request will provide a clue.

sigma7:

--- Quote from: jamesdenton on March 17, 2025, 12:18:45 pm ---RESET<->RESET

--- End quote ---

Perhaps try disconnecting RESET in case it isn't what it seems.

jamesdenton:

--- Quote from: sigma7 on March 17, 2025, 08:21:41 pm ---
--- Quote from: jamesdenton on March 17, 2025, 12:18:45 pm ---RESET<->RESET

--- End quote ---

Perhaps try disconnecting RESET in case it isn't what it seems.

--- End quote ---

Disconnecting RESET results in no behavior at all. Attempting to mount the disk just hangs with no activity of lights and no read errors. According to the respective manuals, both the Corvus and the Lisa expect the drive this line.

sigma7:

--- Quote from: jamesdenton on March 17, 2025, 04:56:25 pm ---http://www.bitsavers.org/pdf/corvus/

--- End quote ---

I see now that there are quite a few documents there with schematics. Do you know if any directly apply to your Corvus unit, or can you provide specifics as to what model it is?

jamesdenton:

--- Quote from: sigma7 on March 19, 2025, 02:45:28 pm ---
--- Quote from: jamesdenton on March 17, 2025, 04:56:25 pm ---http://www.bitsavers.org/pdf/corvus/

--- End quote ---

I see now that there are quite a few documents there with schematics. Do you know if any directly apply to your Corvus unit, or can you provide specifics as to what model it is?

--- End quote ---

It's the Corvus Hard Disk, Rev B/H (specifically H, IIRC). Some additional tech specs here:

https://bitsavers.org/pdf/corvus/7100-05945_General_Technical_Information_Mass_Storage_Oct84.pdf

Serial: 183-CH5581-M

(183) 18th week of 1983
(CH) 20MB H-Series
(5581) 5581st made
(M) Internal Mirror Card

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