Microsoft KB Archive/75226

= Upgrading Toshiba T1000 Laptop to MS-DOS 5.0 and later =

Article ID: 75226

Article Last Modified on 5/12/2003

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APPLIES TO


 * Microsoft MS-DOS 5.0 Standard Edition
 * Microsoft MS-DOS 5.0a
 * Microsoft MS-DOS 6.0 Standard Edition
 * Microsoft MS-DOS 6.2 Standard Edition
 * Microsoft MS-DOS 6.21 Standard Edition
 * Microsoft MS-DOS 6.22 Standard Edition

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This article was previously published under Q75226



SUMMARY
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. -or-

  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:      CONFIG.SYS --

device=emm.sys device=ramdrive.sys /a The HARD RAM drive will now be accessible as a normal RAM drive. 



MORE INFORMATION
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 desktop.

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



STATUS
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.

Additional query words: 6.22 5.00 5.00a 6.00 6.20 3rdparty

Keywords: KB75226

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