On 06/01/14 13:14, Miles Fidelman wrote: > If you have a memory hole, chances are there wouldn't be a BIOS option > to help. It has to do with the way that memory-mapped i/o is handled > with some families of chips and their associated motherboards. > > For example, I have two older servers - fully loaded with 4Gig of RAM > (as I said, older servers) - but no way, no how does the system see more > than 3G. The other 1G is taken up by memory mapped i/o space. It's a > hardware design issue, not a BIOS issue. (For reference: P4 640 > processor, Supermicro P8SCT motherboard). > > In addition to the reference I sent earlier, this sort of describes the > issue: http://en.wikipedia.org/wiki/3_GB_barrier > and this: http://www.dansdata.com/askdan00015.htm > If you do some googling, you'll also find an Intel design note that's > the definitive description of the issue (I can't seem to find it right now) > > Some BIOSs support "memory hole remapping," but others don't - and that > assumes the underlying chipset and motherboard will support it. A lot > don't.
shadowing(??) > > Of course this might not be the problem you're seeing. What CPU, > chipset, motherboard, and BIOS are you running? dmidecode will give you the information Miles (and others) need if you can get a Live CD to boot. Most of the Debian/Debian-based ones will take the kernel parameter "mem=$amountM" as mentioned elsewhere in this thread (where $amount is megabytes found during POST and "M" must be upper-case) e.g. for Knoppix:- knoppix mem=1024M (gives W.I.M.P. requires minimum of 120MB of RAM) or:- knoppix 2 mem=1024M (gives you runlevel 2, text-mode, single-user root, runs in <50MB RAM) dmidecode needs to be run by root, it's output is lengthy so best post it to a pastebin and link to it in your post. If you use Knoppix in run-level 2 you can setup networking with:- knoppix-networkmanager Email the dmidecode report to yourself (as root):- dmidecode | mail longwind2...@gmail.com -s "dmidecode report" Also - check your BIOS to see how much RAM is being allocated to the built-in video card (aperture is different and doesn't rob the system of RAM). > > Long Wind wrote: <snipped> Kind regards -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/52ca2aea.3040...@gmail.com
