Epson Equity I User Manual page 36

Although it has a lot of storage space, you should keep only the files
you use regularly on the hard disk, to make sure you always have plenty
of space available. Store your other files on floppy disks (you can use the
ARCHIVE utility in MS-DOS to back up your hard disk files). It is very
important to back up all your hard disk files on floppy disks. The hard
disk is very reliable, but you should always have backup copies in case
you lose any of your data from the hard disk.
You need to prepare your hard disk before you can use it. If you are
using a hard disk other than Epson's, follow the preparation instructions
provided with your hard disk.
Before you can use the Epson internal hard disk, you must do four
things to prepare it:
Format the entire hard disk with the MS-DOS program
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HDFMTALL.
Partition it to run the MS-DOS operating system with the MS-DOS
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program HDPART.
Format the MS-DOS partition with the MS-DOS program
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HDFORMAT and include the /S option to copy the MS-DOS oper-
ating system to the system tracks on the hard disk.
Copy the MS-DOS system utilities to the hard disk using XTREE or
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the Copy command.
All of these programs are on your MS-DOS system disks and instruc-
tions for using them are in your MS-DOS manual.
Note: If you plan to use an operating system other than MS-DOS, you
need to use that operating system to partition the hard disk and
copy the system files to it.
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