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MS-DOS 6.0 UPGRADE PACKAGE
251-8155 251-8157 (English)
251-8156 251-8158 (French)
Recommended System Requirements:
286AT or Better
1MB Memory - 640K Base, 384K Extended
3.5" or 5.25" High Density Drive
Hard Drive
New Features:
Improved Memory Management
Microsoft's Anti-Virus program (Requires purchase of updates)
New BACKUP program for DOS and Windows
Hard Drive Defragmenter
INTERLNK program for file transfers between computers
Improved DOS HELP program
New UNDELETE program
Problems with 1000's and DOS6.0:
The README.TXT file on the DOS 6.0 Installation Diskette Set warns
customers of ROM-Based computers to contact the hardware manufacturer
before installing. SEE DIRECT QUOTE BELOW
1.5 Tandy with ROM DOS
----------------------
Contact your hardware manufacturer for information about
upgrading a Tandy computer with ROM DOS to MS-DOS 6. This
applies to the following models: 1000EX, 1000HX, 1000SL,
1000SL2, 1000TL, 1000TL2, 1000TL3, 1000RL, 1000RLX,
1000RL-HD, 1000RLX-HD, 1100FD, 2500XL.
The early 1000's up to and including the 1000TX computer have
problems formatting and reading floppy drives to their fullest capacity
with any DOS higher than DOS 3.2. These formatting and reading
problems show themselves as a 720K drive behaving as a 360K drive.
The 1000's have also shown problems with hard drive FAT tables being
scrambled or corrupted by DOS version higher than 3.2, thereby
rendering the hard drive inoperable!.
The 1000's ROM DOS-Based systems will lose the use of Deskmate if
any other version of DOS is loaded other than the one it was shipped
with. The Tandy 1000 ROM DOS based computers are either 8088, 8086,
or 286XT's, because of this they can't load DOS into high memory.
Therefore all of DOS must reside in base memory, (640K) leaving less
of it free for programs to run in. The original DOS 3.2 or 3.3 leaves
between 557K to 575K of free memory for programs to run in.
Installation of DOS 5.0 or 6.0 may scramble the EEPROM chip beyond
recoverability on the Tandy 1000 ROM-DOS based computers. This will
causing the computer to lock with the 640K memory size displayed on
the screen and fail to boot any further. To correct this problem
the computer will have to have it's EEPROM chip replaced at a repair
depot.
The Kernel of DOS 6.0 is the same size as that of DOS 5.0 but 17K
larger than that of DOS 3.3. After the DOS kernel and a mouse driver
have been loaded into memory you are left with approximately 538K to
545K of free memory. If you use DoubleSpace to increase the hard
drive size, DOS 6.0 will automatically load a 42K driver to support
the compressed drive. This will leave approximately 496K to 503K of
free memory for software to run in. As most programs for these
machines require between 540K to 580K of free memory, this will leave
insufficient base memory for these programs to run in.
If you have any questions about DOS upgrades on any systems call
COMPUTER SUPPORT at (705) 728-7474 /Ext. 4327 before installing.