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NE555

1050 Disk Drive Error 173 & 144

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I pulled out my second 1050 drive I had in storage and I am getting Error 173 (Bad Sectors at Format Time) when trying to format a disk (I've tried multiple disks), and Error 144 (Device Done Error). The drive boots and reads directories OK. The drive speed is 287. I have cleaned the heads. What else can I try?

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Can it write sectors? If it fails writing sectors, do the written sectors get erased or corrupted?

 

Do the disks that you try to format actually get erased at all?

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When I try formatting the head doesn't move. If I try writing the heads move.

 

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8 minutes ago, NE555 said:

When I try formatting the head doesn't move. If I try writing the heads move.

 

Formatting and failing without head moving should then result in at least track 0 being blanked. (sectors 1 through 18 on SD 26 on ED)

 

Sounds like the erase function is not working. There was an earlier thread with someone with a similar problem and fixed it - ill look for it.

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Here it is... in this prior case replacing U21 (3086) resolved, but theres lots of other related potential components to look at and try swapping from a working drive.

 

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6 minutes ago, Nezgar said:

Here it is... in this prior case replacing U21 (3086) resolved, but theres lots of other related potential components to look at and try swapping from a working drive.

Thanks! I'll check it out.

 

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