Images
multi OS boot
Linux
MS-DOS
OS/2
boot manager
dual boot
The OS/2 boot manager does this nicely.
NOTES ON INSTALLING DOS, OS/2 AND NEXTSTEP FOR DUAL BOOT
Boot OS/2 from diskette and press Escape to get to the
[A:] command prompt
Run the OS/2 FDISK program and create the following partitions:
1 MB Boot Manager
20MB DOS Primary partition (drive C:)
64MB OS/2 Extended partition (logical drive D:)
120MB Data Extended partition (logical drive E:)
(or 200MB or whatever size)
NOTE: LEAVE THE REMAINING 460+MB FREE SPACE UNFORMATTED
DO NOT CREATE A PARTITION FOR THE REMAINING SPACE
Re-boot the machine and boot DOS from diskette.
Format drive C: and install DOS on drive C: with the
following command: format c: /s /u
Now Re-boot the machine with the OS/2 Installation diskette.
Install OS/2 on Drive D: (the 64 MB logical partition)
You will be prompted to install OS/2 on the default drive C:
You will need to select the option to change the drive which
will throw you into FDISK. Just make drive D: installable and
proceed.
After OS/2 has been installed shutdown the system. Do a cold
power off boot.
Cold boot the machine with the NEXTSTEP boot diskette.
Proceed with normal NEXTSTEP install and you should get the
following disk installation option screen:
Type 1 to erase the entire disk and use all 667 MB ...
Type 2 to set aside some space for DOS and use the rest ...
Type 3 to keep existing partitions and use the 462 MB free space ...
Type 4 to use the 184 MB DOS extended partition for NEXTSTEP.
Type 5 for advanced options (in English only).
--->
Choose option number 3 and proceed with the NEXTSTEP install
After NEXTSTEP has been installed, re-boot the machine and
select 'd' from the NEXTSTEP boot manager menu to boot DOS.
When DOS has booted, run the FDISK program to set the active
partition to the first partition, the BOOT Manager partition.
Then exit fdisk.
Now run the DOS FDISK program again but with the following
parameter: fdisk /mbr
This command removes the NEXTSTEP boot manager from the
DOS partition.
Now re-boot the machine and the boot manager should come up.
Select OS/2
Once OS/2 has booted, run the OS/2 FDISK program and name
the NEXTSTEP partition and add it to the boot manager menu.
You should now have a machine with DOS, NEXTSTEP, OS/2
listed in the boot manager menu when the machine starts up.
The boot manager defaults to the OS that was last booted.