Commodore 128D - Page 208

The system will prompt you to change disks as required.
Use drive A as the source drive and drive E as the destination drive.
Drive E is referred to as a virtual drive—that is, it does not exist as
an actual piece of hardware.
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Making Copies With Two Disk Drives
This section shows how to make distribution disk back-ups on a sys
tem that has two drives: drive A and drive B. Your drives might be
named with other fetters from the range A through D. To make a copy
of your CP/M 3.0 system disk, first use the FORMAT utility to copy
the operating system loader. Make sure that your distribution system
disk is in drive A, the default drive, and the blank disk is in drive B.
Then enter the following command at the system prompt:
A> PIP B: =A: CPM +. SYS
During the copying process, you will be prompted to place the
source disk in drive A and the destination or copy disk in drive B.
When you have copied the CPM + SYS file you use the PIP com
mand to copy the CCPCOM file. You now have a copy of the operat
ing system only. To copy the remaining files from the system disk,
enter the following PIP command:
This PIP command copies all the files in your disk directory to drive B
from drive A PIP displays the message COPYING followed by each
filename as the copy operation proceeds. When PIP finishes copy
ing, CP/M 3 displays the system prompt, A>.
Now you have an exact copy of the system disk in drive B. Remove
the original system disk from drive A and store it in a safe place. As
long as you retain the original in an unchanged condition, you will be
able to restore your CP/M program files if something happens to your
working copy.
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Languages &
Application
Software
CP/M is just an operating system, that is a means to an end—not an
end in itself. On its own it does not do anything useful. If you want to
write your own programs you will need a language, either assembler
or high level, in which to write them. If you want to play games or do
business work you will need applications programs.
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USING CP/M MODE—Files, Disks and Disk Drives in CP/M 3.0