[REQUEST] Zenith MSDOS 3.21 - FORMAT.COM

nickb333

I just picked up a set of Zenith MS-DOS 3.21360k disks.

Unfortunately Disk 1 has some surface damage and critically, the custom version of FORMAT.COM Version 3.29 (c) 1988 11562 bytes is corrupted. When I make a copy of the disk with Anadisk, it appears to work partially but hangs when attemting to run FORMAT /s.

I've checked the version on Winworld and it is slightly different - FORMAT.COM version 3.28, 17166 bytes.

If anyone can help with an image or a copy of the v3.29 file to re-create the disk I would be extremely grateful.

SomeGuy

Is this the "Z-100 PC" (not "Z-100") version? We do have a copy of Microsoft MS-DOS 3.21 [Zenith Z100 PC] (5.25-360k) on Winworld.

nickb333

Already looked at this - 3.21 [Zenith Z100 PC] but thanks for the suggestion. Mine has country set to 44 in config.sys so I suspect it's a version for the British market.

I guess I should make a dump of it to share, less the bad sectors.

SomeGuy

But were the rest of the programs the same? If the format program has the same data and size, then it is probably identical.

Can't really tell from a photo, but that disk doesn't look too bad. Try using a wet q-tip to clean the surface (do not use alcohol, that can make things worse)

Do you have a kryoflux? That will dump as much readable bits of the bad sectors as possible. (If readable, that often includes sector CRC of a bad sector which is useful to verify that guesses at manual patching are correct).

Otherwise, yes, make a dump with ImageDisk or Teledisk and let us take a look at it.

nickb333

I'll do as side-by-side check of the files to see what the differences are. FORMAT.COM is definately different.

The disk damage is actually worse than it looks in the photo, the disk coating has either been scratched or lifted away and there is a crater on there!

Here is a dump using IMDISK plus copies of the readable files; also a list of defective sectors and affected files:
https://user.fm/files/v2-a615fdd2d14dccbbb665f8adf0d836ee/zds_msdos_321_damaged_d1.7z

I don't have a Kryoflux yet but I'm slowly convincing myself I should order one...

nickb333

Update on this one - I made a further copy using a 1.2MB drive and this time only 2 sector errors affecting EXE2BIN.EXE (3056 bytes) and PRINT.COM (9379 bytes).
EXE2BIN.EXE seems to be common to other releases but PRINT.COM looks like another Heath Zenith custom version.

I'm hopeful I can turn this into an [OFFER] at some point.

DoutorHouse

Just found this diskette image on archive.org and it seems to have the three files you're looking for, which were damaged on disk1 (EXE2BIN.EXE, FORMAT.COM and PRINT.COM)... The other two files (GRAFTABL.COM and SELECT.COM) seem identical, so I'm guess they had no errors at all. I hope it helps!

nickb333

@DoutorHouse Thank you, that's exactly the ones I was looking for! I've had a quick look at the .IMA fil, the directory listing and file sizes correspond. I scrolled though FORMAT.COM with a file viewer and I can see version 3.29.

Now I'll have to set the hardware up again and see how this compares to my recovered version.

nickb333

I've compared MD5sums of the version supplied with my original disks. There are some differences, but mainly in keyboard mapping files. Both versions are for the British market - COUNTRY=044 in config.sys suggests this.

ZenithSS_720K files Zenith MSDOS 3.21 360k files --------------------------------------------------------------------------------------------------------- a573e37961a4be4fd503f30ceea97a55 ANSI.SYS a573e37961a4be4fd503f30ceea97a55 ANSI.SYS 529e99e4539492836231ff4f3a1a8e92 APPEND.COM 529e99e4539492836231ff4f3a1a8e92 APPEND.COM 4907578d0889394b98b84777e3fb1c78 APPLY.COM 4907578d0889394b98b84777e3fb1c78 APPLY.COM 975d6e7e84b69d669d89a3cdf81a1476 ASGNPART.COM 975d6e7e84b69d669d89a3cdf81a1476 ASGNPART.COM 43e7a0e909b5d68ddbc10b8098c0c34d ASSIGN.COM 43e7a0e909b5d68ddbc10b8098c0c34d ASSIGN.COM b8e9a1f75999b428cac3eec8c6d98d76 ATTRIB.EXE b8e9a1f75999b428cac3eec8c6d98d76 ATTRIB.EXE 1c3bb8bf4c68d1c795c909d299025f95 AUTOEXEC.BAT 1c3bb8bf4c68d1c795c909d299025f95 AUTOEXEC.BAT d0f524136f435913458262d8d2bb4e7e BACKUP.COM | 11e2c2a6d0d46e6177a4c8b0d2f854c0 BACKUP.COM 5d9da5b747a7964246b9499d0420e46c BOOTF.COM 5d9da5b747a7964246b9499d0420e46c BOOTF.COM 3bea225f919d7d435ddd287dcdeeba0d CHKDSK.COM 3bea225f919d7d435ddd287dcdeeba0d CHKDSK.COM 8a7583075588001ff5dda41c711ba5de COMMAND.COM | 710c36ac2d7b97538fb6aa9a0b9938a6 COMMAND.COM a14e8f59ddbdfbfca05bb31e789ba24c COMP.COM a14e8f59ddbdfbfca05bb31e789ba24c COMP.COM 03b1121b74604f02dc6f6c4ea75fb5d9 CONFIG.SYS 03b1121b74604f02dc6f6c4ea75fb5d9 CONFIG.SYS b7ca371f6cc02536be60ba5fd3128d64 CONFIGUR.COM b7ca371f6cc02536be60ba5fd3128d64 CONFIGUR.COM f0ba2a31a3ab747ae29dc5397c68b001 DEBUG.COM f0ba2a31a3ab747ae29dc5397c68b001 DEBUG.COM 241cd61212c114e2e9e14b4f124caf19 DETECT.COM 241cd61212c114e2e9e14b4f124caf19 DETECT.COM 5baa22b54609e7f667e40621b4ea6cc6 DISKCOMP.COM 5baa22b54609e7f667e40621b4ea6cc6 DISKCOMP.COM e998407f78c5941f879d04735e2f1d24 DISKCOPY.COM e998407f78c5941f879d04735e2f1d24 DISKCOPY.COM a19c5a84fb8ac865b396cf5f5a431feb DRIVER.SYS a19c5a84fb8ac865b396cf5f5a431feb DRIVER.SYS 0de9e79e8013a27078ef7c794fdc889d DSKSETUP.COM 0de9e79e8013a27078ef7c794fdc889d DSKSETUP.COM e614b5590ea8ccf848cfef795bcb6d1a EDLIN.COM e614b5590ea8ccf848cfef795bcb6d1a EDLIN.COM 08547086b02d8cf18c2c8b5924583fdf EMM.SYS | f6fef341fdf99b121d57d97ad9ab2807 EMM.SYS 5372254a4bad8e2da201323ccaedad91 EXE2BIN.EXE < 1af9e08460c206f14428ec3519d83b08 FC.EXE 1af9e08460c206f14428ec3519d83b08 FC.EXE 1a27c35387f6fa1b889770cc2673fb05 FIND.EXE 1a27c35387f6fa1b889770cc2673fb05 FIND.EXE d9d40dd86955c67fd2af35b88942ab34 FORMAT.COM < ca27621554e292ab45eba4541547348c GRAFTABL.COM < 2213395fe489f428da205923eed0c056 GRAPHICS.COM 2213395fe489f428da205923eed0c056 GRAPHICS.COM 27b11bfb5580a23cbb68aeed86eaeaf3 IBMBIO.COM < 9b53190a78f5034bb9c3ab8c7c5737a2 IBMDOS.COM < f3b754b0a4d7f365ae7705c316dfe37a JOIN.EXE f3b754b0a4d7f365ae7705c316dfe37a JOIN.EXE d7a393fec041985b4d38e57563897196 KB84.COM | 84751e22b071c3a0e1bf70395dbc2d78 KEYBCHF.COM 4e81e2ebddb26e2bfd636f57e1ecec24 KEYBCHF.COM | 0892dd44604ce11af3410e6b844798d0 KEYBCHG.COM 93270a2f9230026b02d328d6bcf9fd07 KEYBCHG.COM | 52175515293c08cac8c476557f3a7453 KEYBDA.COM 0119e138cc748d94d70059b444b74f60 KEYBDA.COM | 513059598d3b1e117d048e4bfc0fb8ea KEYBFR.COM 640509443a9ddc5318a4c828418ac762 KEYBFR.COM | f8b9e0e8e0fe1246d13e97e9ed6855fc KEYBGK.COM 86e9a0303e53ef3538acf7cacb304990 KEYBGK.COM | 4cafbc9e2b58ac6b5fe63bae371d61c0 KEYBGR.COM e691b760ecfc5ef0e0d0bc43d7888b16 KEYBGR.COM | 24fca21f093436bc42b050c79b7b9def KEYBIT.COM 74c9859af8645580a4d41b1fe887a5e1 KEYBIT.COM | 58962c677ee233fbc0834080bfc512d5 KEYBNO.COM f911a918b0b53e4841a154e5d991cdd0 KEYBNO.COM | 857268bf59203a695dad52e3f325f891 KEYBSP.COM 08a7baf574463b2d8b862079f614389e KEYBSP.COM | fdf86d858f359f33c6ec17fe2f492924 KEYBSW.COM 6d4366f47ddfc025475f5b95eaccce5e KEYBSW.COM | f22500efa651ffa6d1ecb9f690cea996 KEYBTK.COM 9a7077f65011781b1f8a3589448282ac KEYBTK.COM | 51413188d3814ef3c81119a2f71c2e44 KEYBUK.COM 2d3332d48867a444a67cfd80899e3e80 KEYBUK.COM | 67faab38be167cf8fcee8bd9f80b91f1 KEYBUS.COM b6fb5df191b942094dfa4c7b89077246 KEYBUS.COM < a079f02c0c9e57d4f76c7e0f0dc3e2c3 LABEL.COM a079f02c0c9e57d4f76c7e0f0dc3e2c3 LABEL.COM 678af0b257c39a0ffc6e84ba2b0c998d LIB.EXE 678af0b257c39a0ffc6e84ba2b0c998d LIB.EXE 609f414a49d83b866e5edb3b7028eb9e LINK.EXE < 7fb31d010bb4591ec5a4280b85a5433e MODE.COM 7fb31d010bb4591ec5a4280b85a5433e MODE.COM 032291b89d7451adb8881411165d60ad MODEM.COM < d30704210ee683583469b2c96b263b26 MORE.COM d30704210ee683583469b2c96b263b26 MORE.COM 6c0ee3d0320ec3ae887b5c29c8e2e404 NOSTACK.COM 6c0ee3d0320ec3ae887b5c29c8e2e404 NOSTACK.COM 75612a2ab62456e92df601328e37ae7d PART.EXE 75612a2ab62456e92df601328e37ae7d PART.EXE c56ae46453875957b1171b2c85df3ce8 PREP.EXE c56ae46453875957b1171b2c85df3ce8 PREP.EXE c496a3b51a3af4f4c7bfa8a8bab32fde PRINT.COM < 2dcb654e7e5961a785945c9a0543d678 RECOVER.COM 2dcb654e7e5961a785945c9a0543d678 RECOVER.COM a01527ac7649d25023a1a7816481c4f6 REPLACE.EXE a01527ac7649d25023a1a7816481c4f6 REPLACE.EXE d874fa095d9b56c5500b0224720ac474 RESTORE.COM | 4aa02d91b84363979894e2be86db9df5 RESTORE.COM 53516d6f7063eac95af7f37ea28358b0 RTCLOCK.COM 53516d6f7063eac95af7f37ea28358b0 RTCLOCK.COM 5eb6ea0e535b97e06921bf4029c9fec2 SEARCH.COM 5eb6ea0e535b97e06921bf4029c9fec2 SEARCH.COM db7d152a62fa4b9b3e0c9e5c39852ed0 SELECT.COM db7d152a62fa4b9b3e0c9e5c39852ed0 SELECT.COM dea62233b3854c1710fd8a28ca2fe18f SETUP.EXE dea62233b3854c1710fd8a28ca2fe18f SETUP.EXE 939cc42e65d6a2b31c3a11463f28019e SHARE.EXE 939cc42e65d6a2b31c3a11463f28019e SHARE.EXE 1c1ed7f151ec66a4a46c2d67f27a1250 SHIP.COM 1c1ed7f151ec66a4a46c2d67f27a1250 SHIP.COM ebe33f4a5b438a84f0c615d22925b5e1 SORT.EXE ebe33f4a5b438a84f0c615d22925b5e1 SORT.EXE 1534397ae767cafd98981296295c58da SUBST.EXE 1534397ae767cafd98981296295c58da SUBST.EXE 1b290e0f73417a5411dec7d05fc6b62b SYS.COM 1b290e0f73417a5411dec7d05fc6b62b SYS.COM 0bcc14ee6bc1c58a1bfc0d8841a5555d TREE.COM 0bcc14ee6bc1c58a1bfc0d8841a5555d TREE.COM e02a7647fbe93a550d09c9adcc3a7f6e VDISK.SYS e02a7647fbe93a550d09c9adcc3a7f6e VDISK.SYS f609ac55e1418538ee40cbb38e027294 XCOPY.EXE f609ac55e1418538ee40cbb38e027294 XCOPY.EXE 6eb482be180bee608dce36e4cbdaa6c1 ZCACHE.SYS 6eb482be180bee608dce36e4cbdaa6c1 ZCACHE.SYS 884467e8055ebd47abcb8a3266cc31ac ZCOM.EXE 884467e8055ebd47abcb8a3266cc31ac ZCOM.EXE 948a55a4d36d93e2dec273d63ce3bf35 ZSPOOL.COM 948a55a4d36d93e2dec273d63ce3bf35 ZSPOOL.COM

DoutorHouse

Glad I could help!