Hello Bill,
Tue 07 Apr 98 at 18:45, Bill Drake  wrote to Vic Bates:
 BD> Normally, W95 will use all available UMB for its own purposes once the
 BD> system has booted.
So I've recently read. I'm not sure why it takes the lot though, or how to
reserve any.  I also read that things can't be loaded into upper memory from
a dosbox, so I suppose reserving anything would be rather pointless.
 BD> The VMM32 manager copies parts of itself into W95 DOSboxes to speed up
 BD> DOSbox operations.
If I open a dos box and do mem/c/p, vmm32 is shown as using up 133K.
 BD> While you can change this mode of operation for W95 dosboxes, it is not
 BD> generally recommended.
I've not found out how to change things yet. I'm trying to find out if the 
reason why things can't be loaded high from a dos box is just because vmm32 
has taken the lot for itself.  If so, some could be reserved for 4dos, etc.
 BD> The customary solution to the above problem is to add the following to
 BD> the bottom of your 4DOS.INI file:
 BD> [Secondary]
 BD> UMBEnvironment=NO
 BD> UMBLoad=NO
I've added this, restarted, and yes, it works.  No more 4dos error msg.
 BD> The above changes will prevent secondary shells (any loads of 4dos
 BD> after the primary) from trying to claim UMBs for secondary copies of
 BD> the master environment or secondary copies of the 4DOS resident stub.
What does 4dos use instead of UMB's in that case? I assume it uses HDD space,
as each time I open a new shell (up to about the 4th shell) the available 
disk space goes down. I don't know why it doesn't use up any disk space after 
the 4th shell though?   I also don't know what it does with the diskspace, as 
I've not yet found any temp file it writes to the disk.  I'm going to have to 
investigate further.
 BD> Your W95 Dosboxes should then quit sqawking... 
Yes, they have. Thanks Bill.   BTW, another way was to leave things as they 
were and just put CLS in 4start.btm  :-)
BTW, that error msg never appeared when a shell was started from another dos 
prog which was already running in a dosbox. Any idea why that was?
Rgds, Vic
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