Commodore PC - Hard Disks

12 MS-DOS User's Guide
If a disk does not have a write-protect notch, it is always write-
protected. Many application programs, including this version of
ms-dos, come on write-protected disks that protect the files from
being destroyed accidentally.
About hard disks
Hard Disks
In addition to floppy disks, some computers use a hard disk,
which can store much more information than a floppy disk. Com
puters also take less time to find information stored on a hard disk
than on a floppy disk. A hard disk is usually built into the com
puter. Such a system might look like this:
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Hard disk drive
When you store application programs, including ms-dos, on your
hard disk, you should keep a backup copy of the programs on a
floppy disk in case the information on the hard disk is accidentally
damaged or destroyed. (For more information about making a
backup copy of your ms-dos disk see Chapter 3, "Getting Started.")
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