old.Tohtori
FH is my second home
- Joined
- Jan 23, 2004
- Messages
- 45,210
Configuring Windows Vista and 7 for 3Gb User Memory :
1) Open an elevated (ie, with Administrator rights) cmd prompt (type CMD in the start menu, then CTRL-Shift-Enter)
2.1) Without the quotes, type "bcdedit /set IncreaseUserVa 3072", then press Enter/Return.
2.2) If you are on a multiboot machine, it may fail. If so, add "/store C:\Boot\BCD" to the command, changing the BCD store location accordingly.
2.3) If you're on a machine using Windows Deployment Services (At home? You're 99.99% probably not), you'll need to force regeneration of the BCD store.
Again without quotes: "sc control wdsserver 129"
3) Reboot.
4) To undo this, at an elevated cmd prompt type "bcdedit /deletevalue IncreaseUserVa" and reboot.
Configuring Windows XP for 3Gb User Memory :
1) Open boot.ini
2) Find (usually only one exists) your boot line, which looks something like this :
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect
3) Duplicate that line, and edit it so it includes "/3GB" somewhere after the label. Also edit the label to reflect this change :
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional 3GB" /3GB /fastdetect
4) Reboot. If things go pear shaped if you use that boot option, use the original and remove that line from boot.ini.
There's another thread in this section stickied with a list of mods.