(Answer) (Category) SCO UnixWare 7/OpenUNIX 8/OpenServer 6 FAQ : (Category) Media/Device Information, Filesystems, and Disks :
How do I superformat a diskette in Uw7/OSR6?
As of this version, I can't get this to work on Uw7/OSR6. There is a device for reading and writing to a 1.68MB floppy if you have formatted it first on another OS, /dev/[r]dsk/f03ct (man 7 fd). 

   You can use DOS fdformat (written in 1991).  Reboot into MS-DOS mode, run

       FREAD                   (loads a TSR)
       FDFORMAT A: F168        (or F144, or F163, or F172)
The standard way to format a floppy is to use 80 tracks and 18 sectors per track, but for DOS format diskettes, Microsoft reserved 3 sectors of every track for undelete information. This space can be used for your data. You can increase the size of your DOS diskette from 1440K to 1680K. The concept, again, is to use 21 sectors per track, instead of only 18 sectors per track, though the data will be interleaved, which makes accessing them a bit slower.


<mschalit@pacbell.net>
gerberb@zenez.com

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