Rob You will get that problem if the drive spindle is running to fast. Julian Saturday, December 1, 2012, 11:17:18 AM, you wrote: > Gents, > I would not normally post 'please help me fix' type questions here but > this one has me stumped. Some may already have seen the thread on > vintage-computer forums here: > http://www.vintage-computer.com/vcforum/showthread.php?34572-8050-Floppy-Repair > In a nutshell, drive 1 works 100%, drive 0 will read and write but not > format. It usually stops on track 1 with a #21 read error but > occasionally will go as far as track 3 or 4. If I swap the mechanisms, > the problem stays with drive1. This implies a problem in the analogue > board (micropolis pcb #8050006) but I can't find it and I don't > understand what kind of problem would allow it to write but not format. > I know the mechanisms are good and well aligned and, as the drives read > OK, they are properly speed adjusted. > Do any of you disk wizards know the algorithms by which these drives > format a disk? I hoped this might give me a clue. > Rob > Message was sent through the cbm-hackers mailing list -- Best regards, Julian mailto:jp@digitaltapestries.com Message was sent through the cbm-hackers mailing listReceived on 2012-12-01 01:00:44
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