First post, by LSS10999
I modded my motherboard's BIOS to include Plop Boot Manager as a LAN PXE ROM. While it works great, I noticed an undesirable side effect: About 40KB of upper memory is no longer available.
If I disable the boot manager (by disabling PXE ROM from BIOS), those "missing" upper memory area would be usable again, which means the boot manager is permanently resident in the upper memory area and not released after booting into a partition.
I wonder if there is a good tool to do an in-depth conventional/upper memory inspection so as to know where the "option ROM" resided, and then I can test if it's possible to safely reuse that part of upper memory (using I=xxxx-xxxx option) as the boot manager itself is no longer useful now that I've booted into DOS.
If not, guess I'll have to use a different means to invoke such boot managers, as upper memory area is too precious to be wasted by option ROMs.