Hello !
I have Slack 10 and Trustix installed on my sistem...
Some hardware details:
Gigabyte KT880-L, HDD: 60 GB, 80 GB, DVD combo, ATI Radeon 9000pro GB, AMD XP 1800+, 1X256 DDR 333, 2X512 DDR400...
Kernel versions: 2.6.8.1 custom and 2.4.28-11tr (trustix linux)... 512 MB swap
The problem is that Linux reports only 882 MB RAM...
Here is the output of "free":
free
total used free shared buffers cached
Mem: 882 875 6 0 141 185
-/+ buffers/cache: 548 333
Swap: 501 0 501
Total: 1384 875 508

And of "cat /proc/meminfo":
MemTotal: 903620 kB
MemFree: 7848 kB
Buffers: 143508 kB
Cached: 190712 kB
SwapCached: 0 kB
Active: 373156 kB
Inactive: 172860 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 903620 kB
LowFree: 7848 kB
SwapTotal: 514040 kB
SwapFree: 514040 kB
Dirty: 28 kB
Writeback: 0 kB
Mapped: 264868 kB
Slab: 341036 kB
Committed_AS: 261424 kB
PageTables: 1156 kB
VmallocTotal: 122804 kB
VmallocUsed: 69116 kB
VmallocChunk: 53688 kB

The BIOS sees the quantity of RAM corect and so does Win XP...
So what could it be ?
Thank you !

You need to enable "highmem" support in your kernel to see all your ram. Look in "processor type and features" and you will see high mem support, you are going to want to change this to "4GB" then recompile your kernel.

Thanks ! I shall try this ... I guess this should be it !