[Coco] Formatting OS-9 hard drives

Allen Huffman alsplace at pobox.com
Sun Feb 19 11:50:18 EST 2017

> On Feb 19, 2017, at 10:37 AM, David Ladd <davidwladd at gmail.com> wrote:
> Saddly for what is internally happening with the firmware during the so
> called low level format am not sure.  Would have to see if there is some
> specific documentation for it some place.
> A 850MB Quantum SCSI HDD I had when you issued a low level format it
> actually did a full sector scan on its own and if it found bad sectors it
> would map them out and use the so called spare sectors.

That explains why I don't hear any noise from the drive or see any activity light. Guess it's not in the driver.

And it means the two weeks I spent with my BASIC09 program trying to get it to erase all the sectors and log the bad ones was not for nothing :)

If you want to borrow one of my EZ135 drives, I'd be glad to loan it to you.

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