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twqwctf
December 28th, 2015, 01:38 PM
Hi everyone, I have a working Toshiba T3100e/40 (286, 1MB Ram). Toshiba MS-DOS 3.3 is installed on the hard drive. Works just fine. Also have the Toshiba provided MS-DOS 3.3 floppy boot - works also.

I took a 1.44HD floppy (taped the hole - to make it appear as a DD), formatted as 720k in my Pentium I machine. Wrote the 1st image of MS-DOS 5 to it. I booted from the floppy on the Pentium I machine. Works.

Now I am hoping to boot this MS-DOS 5 floppy on the Tosbiba T3100e/40. However when I attempt to boot from the same floppy I just created, I get the 'Non system disk' error.

Anyone know why?

Stone
December 28th, 2015, 03:00 PM
Try formatting the floppy disk in the Toshiba and then write the DOS image to it.

twqwctf
December 28th, 2015, 03:19 PM
Ugh, getting this error when I try this:

C>format b:
Insert new diskette for drive B:
and strike ENTER when ready

Invalid parameter

C>

28562

Stone
December 28th, 2015, 03:54 PM
Why B?

What floppy is A?

modem7
December 28th, 2015, 04:24 PM
C>format b:

Why B? What floppy is A?
The T3100e technical manual indicates that the T3100e has an 'A/B/PRT' switch. Based on the description of the switch (it controls the functionality of an external connector), I expect that the switch needs to be in either the 'B' position or the 'PRT' position so that the internal diskette drive is A:

modem7
December 28th, 2015, 04:30 PM
Ugh, getting this error when I try this:

C>format b:
Insert new diskette for drive B:
and strike ENTER when ready

Invalid parameter

C>
Formatting a 720K diskette in a 1.44M drive.
Try:

format a: /f:720

or

format a: /t:80 /n:9

twqwctf
December 28th, 2015, 05:14 PM
Well I'll be. The switch on the right side was set to A. I have switched it to B. Now the computer uses A: for the floppy. AND this allows me to boot from this MS-DOS floppy. It does not work when drive is set as B:
28569

Stone
December 28th, 2015, 05:32 PM
Ya', basic DOS syntax. :-)

twqwctf
December 28th, 2015, 06:06 PM
Right well the computer boots B: using the provided Toshiba MS-DOS 3.3 boot floppy. But not MS-DOS 5 vanilla and others. Thanks!