## Physical Device Driver Reference

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### DSK_FORMATVERIFY (45h) - Format Track Table

Format Track Table Contains four-byte tuples. Each tuple is in the form (c , h, r, n) where c=cylinder number, h=head number, r=Sector ID, and n=save bytes per sector:

n Bytes/Sector
0 128
1 256
2 512
3 1024

There is a 4-tuple for each sector in the track to be formatted. Both the head and cylinder numbers must be consistent within the tuple and the corresponding Parameter Packet field.