Researching format of files split onto multiple floppy disks - not MSBackup
Posted on 2008-02-02
My Dad gave me some old files to try to read. After getting confused for a while, I realized that they are split into directories of no more than 1.22MB per directory and the biggest file is split into sections over multiple directories:
The files in each folder are intact (not encrypted or smashed together) until you hit the file that doesn't fit on a floppy, then that file is split into parts with the .0,.1,.2,.3 names. The first few bytes of the first file are:
--strangely, the 1.22MB limit seems to be accomplished by creating two 625KB files. No single file is bigger than that. (of course that fits on the old 700K floppies)
I have been reading some other posts and they indicate that DOS BACKUP or MSBACKUP would have smashed the files and named them MYDISK.001, MYDISK.002, etc.
The folders may have been created by some backup program that put them on floppies and then someone re-loaded them onto a HDD and then burned me a CD, so I don't know if this was a floppy backup program or just a split-to-the-right-size-for-1.4MB-floppies program.
Would anyone have a clue what program split the big file? PKzip? something else?