Commodore PC Ms-Dos 3.2 User's Manual page 101

MS-DOS Commands 29
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Backup Backup
(~) Purpose:
Backs up one or more files from one disk to another.
f0^) Syntax:
backup [drive:][patbname] [drive:] [/s][/m][/a]
^-^ [/didate] \lX:time\fL:filename\
Comments:
jtm^ The backup command can back up files on disks of different
f ) media. For example, you can back up files from:
■ Hard disk to floppy disk
i) ■ Floppy disk to floppy disk
■ Floppy disk to hard disk
~^ ■ Hard disk to hard disk
This command also backs up files from one floppy disk to another
f0^ even if the disks have a different number of sides or sectors.
The first drive: option is the name of the disk drive that you want
to back up. The second drive: option is the name of the backup
(****) disk drive. You should note that unless you specify the /a option,
backup erases the old files on a backup disk before adding new
files to it.
(*"**) This backup program and the one supplied by IBM® are com
patible. File and disk formats are the same as those that the IBM
backup program uses unless you set the PL switch, which is
/"~\ described in the following list.
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