MS-DOS 1.24

horrible osMS-DOS 1.24 was released in 1982-03 as the second general release to IBM. IBM named it IBM® Personal Computer™ DOS 1.10 but it was believed to be MS-DOS 1.24 compiled with the  switch on.

It supported both single sided (160KB) and double sided (320KB) 5.25" floppies and there was no sub-directory support (all files must be located in the root directory). As a result of that,,   and other symbols can be used in file names.

Change log
1.24 03/01/82 Restore fcn. 27 to 1.0 level; add fcn. 28

Internal commands
The Command Interpreter,, supported these commands: