freakedenough
Experienced Member
How do I make use of UMBs on my M24SP?
There are obviously unused UMB available:
A000-B7FF
C000-D7FF
DC00-EFFF
But when I try to load USE!UMBS.SYS 2.2. on DOS 4.01 and then DOSMAX, my system will just freeze with a blinking cursor when DOSMAX should be loaded. It continues booting as normal if I exclude DOSMAX.
Same for DOS 5.00, but directly after loading USE!UMBS.SYS, so cause of crash is USEUMB. I found both tools in this thread.
I added it to config.sys in these 3 ways, all with no luck:
However, if I choose to use UMB segment B800-BFFF it continues (under DOS5) at least to DOSMAX.EXE and then crashes because it writes into video memory, showing me garbage on the screen as expected.
So my question is why are all the free blocks unusable? Did I miss something?
There are obviously unused UMB available:
A000-B7FF
C000-D7FF
DC00-EFFF
But when I try to load USE!UMBS.SYS 2.2. on DOS 4.01 and then DOSMAX, my system will just freeze with a blinking cursor when DOSMAX should be loaded. It continues booting as normal if I exclude DOSMAX.
Same for DOS 5.00, but directly after loading USE!UMBS.SYS, so cause of crash is USEUMB. I found both tools in this thread.
I added it to config.sys in these 3 ways, all with no luck:
Code:
DEVICE=USEUMBS.SYS A000-B7FF C000-D7FF DC00-EFFF
or
DEVICE=USEUMBS.SYS A000-B000 C000-D000 E000-F000
or
DEVICE=USEUMBS.SYS A000-AFFF C000-CFFF E000-EFFF
So my question is why are all the free blocks unusable? Did I miss something?
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