MAME Reproducible CHDs

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Overview
Comment:Update all the NT recordings in accordance to Forum thread 2026-01-19T04:14:52z.

All the operating systems now install to a single FAT partition on the hard disk rather than multiple partitions (ARC and OS). It maintains that C: is the only disk partition in the OS, and if no other hard disks are present, D: is the CD-ROM drive.

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Timelines: family | ancestors | descendants | both | jazz-nt
Files: files | file ages | folders
SHA3-256: c15788dc4dd087c983e701a9c7b81b6f1af9fc610913a6eab820b93e80a1a783
User & Date: chungy 2026-01-20 05:56:10.774
Original Comment: Update all the NT recordings in accordance to [forum:/forumpost/2026-01-19T04:14:52z|Forum thread 2026-01-19T04:14:52z].

All the operating systems now install to a single FAT partition on the hard disk rather than multiple partitions (ARC and OS). It maintains that C: is the only disk partition in the OS, and if no other hard disks are present, D: is the CD-ROM drive.

Context
2026-01-30
17:42
Merge jazz-nt into trunk check-in: d219ed4a13 user: chungy tags: trunk
2026-01-20
05:56
Update all the NT recordings in accordance to Forum thread 2026-01-19T04:14:52z.

All the operating systems now install to a single FAT partition on the hard disk rather than multiple partitions (ARC and OS). It maintains that C: is the only disk partition in the OS, and if no other hard disks are present, D: is the CD-ROM drive. Closed-Leaf check-in: c15788dc4d user: chungy tags: jazz-nt

2026-01-08
22:15
Add detailed instructions on booting the WinNT images. check-in: 14050c352e user: chungy tags: jazz-nt
Changes
Unified Diff Ignore Whitespace Patch
Changes to jazz-nt/README.md.
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 1. Select `Run setup`
 2. Select `Initialize system`
 3. Select `Set default configuration`
 4. You can press Enter through all the options.  The main thing you
    might want to change is screen resolution, it defaults to
    1280×1024.  A smaller resolution might be more comfortable.
 5. Select `Set default environment`
 6. Again you can press Enter through all the options.  The boot
    partition must be set to 1 (default).

 7. *Semi-optional:* select `Set time`.  The clock sometimes starts up
    with an invalid triple-digit hour and Windows NT might boot up
    thinking the date is far in the past or far in the future (I’ve
    seen both the years 1601 and 6781 when ignoring this step).
 8. Select `Return to main menu`
 9. Select `Manage startup`
 10. Select `Add a boot selection`
 11. Press enter for `Scsi Hard Disk 0 Partition 1`
 12. Enter the osloader path.  It defaults to `\os\nt\osloader.exe`
     and this is fine for Windows NT 3.1.  Change to
     `\os\winnt351\osloader.exe` for Windows NT 3.51,
     `\os\winnt40\osloader.exe` for Windows NT 4.0.
 13. Answer `No` to “Is the operating system in the same partition as the osloader?”

 14. Select `Scsi Hard Disk` and SCSI ID `0`.  Enter the partition
     number `2`.
 15. For Windows NT 3.1 and 4.0, the operating system directory
     `\winnt` is fine.  For Windows NT 3.51, change it to `\winnt35`.
 16. *Optional:* Enter a name for the boot selection.  It default to
     having “Windows NT” filled out, and you may just accept that.
 17. Select `No` to “Do you want to initialize the debugger at boot
     time?”
 18. Select `Return to main menu`








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 1. Select `Run setup`
 2. Select `Initialize system`
 3. Select `Set default configuration`
 4. You can press Enter through all the options.  The main thing you
    might want to change is screen resolution, it defaults to
    1280×1024.  A smaller resolution might be more comfortable.
 5. Select `Set default environment`

 6. The boot partition partition must be set to `2`.  You can press
    enter on the other options.
 7. *Semi-optional:* select `Set time`.  The clock sometimes starts up
    with an invalid triple-digit hour and Windows NT might boot up
    thinking the date is far in the past or far in the future (I’ve
    seen both the years 1601 and 6781 when ignoring this step).
 8. Select `Return to main menu`
 9. Select `Manage startup`
 10. Select `Add a boot selection`
 11. Press enter for `Scsi Hard Disk 0 Partition 2`
 12. Enter the osloader path.  It defaults to `\os\nt\osloader.exe`
     and this is fine for Windows NT 3.1.  Change to
     `\os\winnt351\osloader.exe` for Windows NT 3.51,
     `\os\winnt40\osloader.exe` for Windows NT 4.0.
 13. Answer `No` to “Is the operating system in the same partition as
     the osloader?”
 14. Select `Scsi Hard Disk` and SCSI ID `0`.  Enter the partition
     number `1`.
 15. For Windows NT 3.1 and 4.0, the operating system directory
     `\winnt` is fine.  For Windows NT 3.51, change it to `\winnt35`.
 16. *Optional:* Enter a name for the boot selection.  It default to
     having “Windows NT” filled out, and you may just accept that.
 17. Select `No` to “Do you want to initialize the debugger at boot
     time?”
 18. Select `Return to main menu`
︙︙
Changes to jazz-nt/winnt31.inp.

cannot compute difference between binary files

Changes to jazz-nt/winnt351.inp.

cannot compute difference between binary files

Changes to jazz-nt/winnt40.inp.

cannot compute difference between binary files