On 04.03.2014 15:11, Al Kossow wrote:
I noticed that the first track is very different, with very long sectors compared to the rest of the disk.
The microcode diskettes for system/32, /34 and /36 used one 4 KByte sector on track zero for IPL. S/36 had programs DIAGINIT and DIAGCOPY which could format and make copies of the S/36 microcode diskettes.
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