This file builds a 32Bit MS-DOS \ VOGONS

This file builds a 32Bit MS-DOS

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First post, by Warlord

Posted on 2019-12-09, 01:08

Warlord Offline

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Posts: 2534
Joined: 2018-02-02, 05:14

This is some old BAT file, that some German magazine might of Been c't magazine. Made up back in the day. I would not try this on a live system, It might hose your entire computer. I not responsible for damages.

1@echo off
2rem This file builds a 32Bit MS-DOS. This means DOS runs in protected mode, and long file names are available. Ideal for
3rem Backup.
4rem Booting this system up requires a few things:
5rem .
6rem 1) System Registry scanned. Location indicated by IO.SYS
7rem 2) VFAT/LFN driver loaded in config.sys : DEVICE=IFSHLP.SYS
8rem 3) XMS driver loaded. So far supported: FDXMS.SYS / HIMEM.SYS / XMSMMGR.EXE
9rem .
10rem Original version (everything below "goto 2nd" and ":2nd" ) © PC-WELT Germany.
11goto 2nd
12if exist c:\32BD\nul deltree /y c:\32BD
13c:
14md c:\32BD
15cd c:\32BD
16copy %winbootdir%\win.com
17copy %winbootdir%\system.ini
18md c:\32BD\system
19cd c:\32BD\system
20copy %winbootdir%\system\vmm32.vxd
21copy %comspec% krnl386.exe
22xcopy %winbootdir%\system\vmm32\*.* vmm32\
23xcopy %winbootdir%\system\iosubsys\*.* iosubsys\
24cd c:\32BD
25goto end
26
27:2nd
28rem @echo off
29if exist c:\32bd\nul deltree/y c:\32bd
30c:
31cd \
32for %%x in ( c:\32bd c:\32bd\system ) do md %%x
33cd 32bd
34copy %winbootdir%\win.com
35copy %winbootdir%\system.ini
36cd system
37copy %comspec% krnl386.exe
38xcopy %winbootdir%\system\vmm32\*.* vmm32\
39xcopy %winbootdir%\system\iosubsys\*.* iosubsys\
40set filelist=vmm32 vnetsup ndis2sup vnetsetup ndis ndis2 vnetbios vredir dfs javasup aspienum wrdrv msmouse
41for %%x in ( %filelist% ) do if exist %winbootdir%\system\%%x.vxd copy %winbootdir%\system\%%x.vxd
42set filelist=
43cd \32bd
44goto end
45:end

Reply 1 of 2, by bakemono

Posted on 2019-12-10, 00:06

bakemono Offline

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Rank: Oldbie
Posts: 693
Joined: 2018-01-15, 06:56

Interesting. The unstated part of this is that after copying a few Windows files (win9x? win95 only?) to the 32bd directory, you then can go in there and run "WIN" but because krnl386 has been replaced by command.com it dumps you at a V86 mode command prompt without fully booting.

Tried it on my 486 with Win95a. After it loads I need to use PROMPT $p$g and set my PATH again. Windows disk caching seems to be active. Can't run any win32 stuff but most DOS stuff works normally (DOS4GW complains). Typing EXIT brings you back to plain DOS.

again another retro game on itch: https://90soft90.itch.io/shmup-salad

Reply 2 of 2, by Warlord

Posted on 2019-12-10, 04:06

Warlord Offline

Rank l33t

Rank: l33t
Posts: 2534
Joined: 2018-02-02, 05:14

while this page is not where I learned about it, I forgot that it was from pcwelt magazine. theres a lot more info about it here. Should also be able to replace the command prompt with 4dos or command.com http://reboot.pro/topic/2343-dos-32-bit-with- … rough-vmm32vxd/

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