Last week I was sorting through several sets of Microsoft C 5.1 disks from 1988 (more about that later). While I was comparing the disk images to see whether the disks were the same or not, despite different labels and part numbers, I did a double take when I realized that a file with random e-mail fragments was, in fact, a MS C 5.1 disk:
nts to the beginning of an _iob structure within the _iob array. But that's not very likely. What usually happens is people passing in NULL or some random value. From davewe Wed Nov 11 11:10:28 1987 To: jeffrob stevesa Subject: stream validation Cc: barrymc billjo dougbo gregf Date: We
It’s not clear on which host OS the MS C 5.1 disks were created and how (copying files to a floppy vs. creating disk images on a hard disk). But it is certain that the software involved did not sanitize the buffers and random fragments of data stored in the host system’s memory ended up in the final sectors of numerous files. Continue reading
