I just tried this on Compaq DOS 5.0 with Compaq Himem only with no errors
and no missing paths. So unless it's a FAT32 problem it must go back to
FreeDOS somehow???

On Wed, Jun 8, 2016 at 3:30 PM, Don Flowers <donr...@gmail.com> wrote:

> I'm going to try a couple of things in DOS 5.0 and DOS 6.20, I'll be back.
>
> On Wed, Jun 8, 2016 at 2:52 PM, Eric Auer <e.a...@jpberlin.de> wrote:
>
>>
>> Hi Bret,
>>
>> the problem of using but not reserving memory for the kernel in FreeDOS
>> sounds vaguely similar to the problem of HMA usage in DOS in general:
>>
>> DOS installs trampoline handlers outside HMA which make sure that the
>> HMA is actually enabled before DOS calls code there. Maybe a similar
>> approach could be used for the unallocated FreeDOS memory?
>>
>> It could check if the not-reserved temp data is still valid and if not,
>> avoid attempts to use it. Of course it would be better if FreeDOS could
>> behave and use MCB for that temp data in the first place, but I do not
>> know the ins and outs of why it does not or maybe can not do that now.
>>
>> Also, this could be relevant for the way in which FreeCOM misbehaves by
>> using without allocating memory, if I understand the other mails well.
>>
>> It should probably check if the data left in RAM is still valid and if
>> not, reload the (message string) data from disk or from XMS swap RAM?
>>
>> Regards, Eric
>>
>>
>>
>>
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