[comp.os.os2.misc] DOS compatibility

EAF@.Prime.COM (11/02/90)

The standard Format command should produce FAT system diskettes which can
be read by DOS (I do it all the time.)

It is likely that she is using a different density on the diskette, like
using High Density recording on a 720k disk or some mismatch like that
which your computer doesn't like.