Epson Equity II - Manual (Page 42)

The MS-DOS system diskette contains all these programs and the
MS-DOS manual describes how to use them. If you plan to use an oper-
ating system other than MS-DOS, you need to use that operating system
to partition the hard disk and copy the system files to it.
The Epson hard disk is formatted at the factory. Therefore, you need
not format it before you partition it to run an operating system. If you
have serious read/write problems when you use the hard disk, you may
need to format the entire hard disk with the MS-DOS HDFMTALL pro-
gram as a last resort. See your MS-DOS manual for instructions and be
sure to read the precautions carefully.
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