Upgrading Toshiba T1000 Laptop to MS-DOS 5.0 and later (75226)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
• Microsoft MS-DOS operating system 5.0a
• Microsoft MS-DOS operating system 6.0
• Microsoft MS-DOS operating system 6.2
• Microsoft MS-DOS operating system 6.21
• Microsoft MS-DOS operating system 6.22
This article was previously published under Q75226
The Toshiba T1000 laptop uses ROM DOS Toshiba MS-DOS version 2.11,
which is configured as a 256K read-only drive C. At this time, there
is no ROM DOS upgrade available from Toshiba.
You can use Microsoft MS-DOS 5.0 or later with the Toshiba T1000 laptop.
The T1000 boots from a MS-DOS 5.0 or later system floppy disk. However,
you will be unable to access the ROM DOS drive C. The HARD RAM drive D
or the RAM expanded memory (which is the same thing, just configured
differently) is accessible if you do ONE of the following:
• Run FDISK. From fixed disk drive 2, delete the two non-DOS
partitions and the Novell partition, then create a primary DOS
partition. Format drive C.
The HARD RAM drive will now be usable as drive C.
• Boot on the ROM DOS. Copy the file EMM.SYS to the MS-DOS 5.0 system
disk. Run the T1000 SETUP10.EXE program and configure the HARD RAM
drive so that there is at least 64K bytes not used. On the MS-DOS
5.0 system disk, include MS-DOS 5.0's RAMDRIVE.SYS and a CONFIG.SYS
file that contains at least the following:
The HARD RAM drive will now be accessible as a normal RAM drive.
The T1000 will NOT boot from the HARD RAM drive using MS-DOS 5.0 or later.
The Toshiba T1000 laptop should not be confused with the Toshiba T1000
The specifications for the Toshiba T1000 laptop are as follows:
CPU: 80C88 4.77 MHz
Operating system: MS-DOS 2.11 in 256K ROM
Drives: One 720K 3.5-inch drive
Memory: 512K RAM
Optional 768K LIM EMS 3.2 memory card available
Keyboard: 82 key
Display: CGA-compatible LCD
The product included here is manufactured by Toshiba, a vendor
independent of Microsoft; we make no warranty, implied or otherwise,
regarding this product's performance or reliability.
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