Please do try whether updating LBACACHE makes things
work again BOTH with tuns and without tuns, thanks!

> I googled the TUNS option and it seemed it was only
> for SCSI SATA & RAID - is this this case?
> I guess the FreeDOS install configured the TUNS option
> because of the SATA channel?

The install always uses TUNS, as we assume that it
gives better compatibility. It allocates the stack
in low RAM, as some SCSI/SATA BIOSes get confused
with stack in UMB. However, some LBACACHE versions
have a smaller low stack than UMB stack. Apparently
newer BIOSes need much stack space, and the 2008
update of LBACACHE should fix that problem :-).


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