Windows NT 3.1 October 1991 build

This build was the October 1991 COMDEX release.

GUI setup

 * Adaptec AHA-1540 or compatible SCSI bus
 * (adequately emulated by the BusLogic SCSI HBA device in VirtualBox)


 * SCSI hard disk connected to SCSI port 0
 * SCSI hard disk connected to SCSI port 2
 * COM1 port enabled
 * At least 16 MB of RAM
 * Hard disk prepartitioned and preformated disk in MS-DOS

Text mode setup (from MS-DOS)

 * 16 MB of RAM
 * COM1 port enabled
 * Prepartitioned and preformated disk in MS-DOS

GUI Setup
To use the GUI setup, you have to have a SCSI CD drive, thereby your best bet is to use VirtualBox. Step-by-step 1. Go to VM settings and open the Storage tab.

2. Remove the IDE bus and add a SCSI one as a replacement.

3. Add a hard drive, mount the vdi file and keep the SCSI port on no. 0.

4. Add a CD drive, mount the 10-91 ISO file and set the SCSI port to no. 2.

5. Add a floppy bus and add a floppy drive. Mount an MS-DOS bootdisk with FDISK and FORMAT.

6. Go to the Serial Port tab in VM settings.

7. Check the "Enable serial port" checkbox.

8. Select COM1 from the listbox, and select "Disconnected" as the mode.

9. Save the settings.

10. Start the VM. MS-DOS should boot. Run FDISK and partition the drive. Then format it with the FAT filesystem.

11. Mount the boot.img image file and press Right Ctrl+Del

12. Select the default option in OS Loader.

13. The initital Setup page should come up. Fill in your name and account name.

14. Select the Custom Setup option.

15. Click Continue on the hardware list.

16. Click Continue on the hard disk configuration page.

17. Select whether you want to install the free or checked/debug build.

18. Uncheck ALL the options in the optional components dialog. Why? 10-91 doesn't recognize the VirtualBox network adapter, MSTOOLS fail to install, etc.

19. Wait for the files to copy.

20. You're installed!