[OFFER] MS-DOS 3.20 OEM disks for Zenith ZFL-181-93 and Sharp PC-4500 laptops
Sharp - PC-4500 - MS-DOS v3.20 (I-O Subsystem Version 1.0B), by Microsoft and Vadem (1ct 3.5" disk)
https://mega.nz/#!X2J3nSLa!EuBUNG4e6tUV2Zn9IrB-TdzIMoUeygliB0T0RFA_w7c
SHA1: 261ad9053f194ee2b6bd695bc8a57ab71edb1b70
Zenith - ZFL-181-93 - MS-DOS v3.20 (OS-63-43), by Microsoft and Zenith Data Systems (1ct 3.5" disk)
https://mega.nz/#!OvAhUSYS!fD5tgcc2n4_rt3zCFMICowai4zMow4SGoLKZjGRI6Kw
SHA1: 9919aa4123d72176e8e1bfd314ddfce09f53c662
These images were dumped from MS-DOS 3.20 OEM disks included with the purchases of a couple of old 8086 laptops.
The disk for the Sharp PC-4500 is a handwritten user backup, but judging from its boot sector, the backup was created from within an instance of the original Sharp MS-DOS disk (i.e. the backup was created using the original supplied Sharp OEM disk inside the PC-4500). It works without a hiccup on the laptop.
The disk for the ZFL-181-93 on the other hand is the original disk supplied by Zenith. Unfortunately the label is scribbled on, with the previous owner's last name and the phrase "(1 of 4)". I thought this meant the original MS-DOS files would be toast, but luckily I was wrong. I couldn't find any evidence of tampering or deleted personal files using a hex editor and Norton Utilities for DOS, and the boot sector implies this floppy was mastered on a Zenith machine with the same version of DOS ("ZDS3.2"). The only thing changed on disk really is CONFIG.SYS, which has a modified date of 1990, whereas the rest of the files have modified dates of 1984 to 1987. The label lists a copyright date of 1985, while the laptop was manufactured in 1987. The disk works on it without a hitch, too.
Comments
Thanks for offer the various MS-DOS 3.20 OEM.