Windows Server 2008 R2 - Only displaying 3.50GB usable of 8GB and crashes when I enable Memory Remapping in BIOS
Sunday, January 06, 2013 10:15 PM
It looks as though this question has been asked before, except that my case is somewhat different in that I have already tried the various suggestions and answers.
I noticed that my evaluation was running really sluggish and that swap was being used excessively (I'm putting 2008 R2 through its paces to see if it will run the various bits of software we want to use it for). In the system page, it says that I have 8GB Ram (correct so far!) but that only 3.50GB is usable!
Performance monitor says that the rest is "Hardware reserved" as others have experienced.
So I did the following to try to sort out whats wrong:
1) Ran Memtest - all ok
2) Checked msconfig - "maximum memory" is UNCHECKED.
3) Went into BIOS and enabled "memory remapping" but this is where it fell flat. Windows would not boot beyond the initial windows loading progress bar, chucks up a BSOD very briefly and then restarts. A few attempts enabled me to just make out that the BSOD is saying: "IRQL_NOT_LESS_OR_EQUAL".
4) Loaded up Ubuntu Linux live cd to do some more memory testing - this loaded fine and reported the full 8GB of RAM with the memory remapping enabled in BIOS.
I'm really at a loss to understand why Linux can both see AND use my 8GB of RAM but windows 2008 R2 cannot...Apart from this memory issue, I have liked what I've seen so far, but if I cant utilise more than 3.50 GB of RAM then this is a showstopper for me. And I have to say I'm a bit shocked that Linux can see and use the memory but Windows is misbehaving. 2008 R2 seems so polished...
Any help or advice would be greatly appreciated!
ASRock motherboard 1333fsb core HD
Kingston matched / Paired RAM (4 x 2GB sticks) - I know this works because both the BIOS AND Linux can see it and use it.
PNY / Nvidia Geforce 9500GT with 1GB onboard RAM.
Thanks in advance
- Edited by rphillips2012 Sunday, January 06, 2013 10:18 PM
Sunday, January 06, 2013 11:42 PMYou sure your running R2? Server 2008 had a 32bit version which obviously limits its memory to 4GB, while R2 was 64bit and had higher memory limits.
Be kind and Mark as Answer if I helped.
Monday, January 07, 2013 12:54 AMYes, I'm certain that I'm running R2. It's very clearly marked on the system properties page as such. It is build 7601, evaluation dvd.