Determining how many disks you need for a backup
You can back up a whole system onto floppy disks: to estimate how
many floppy disks the backup requires, use the
disk usage command, which returns the number of 512-byte blocks
contained (recursively) within the current directory. Its
-s option prints only a grand total:
For example, if 24356 is displayed, this means that you require a
total of 24356 x 512 bytes, or roughly 11.9MB. This would
give a total of nine 1.4MB floppy disks to create a full backup.
You can display the number of blocks for each individual file or
directory by including the filename on the end of the du
command, as in the following:
$ du -s /dev
Once you know how many floppy disks are required, you can use the
commands to create the archive. See
``Creating a backup with tar''
``Creating a backup with cpio''
for details of how to use these commands.
Formatting floppy disks
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003