Windows 7/10/11
- Win+R > msconfig
- Boot > Advanced
- Click memory checkbox and enter how much memory should remain in megabytes
- Click OK, and restart PC
If you want to undo the operation, you simply need to uncheck the ‘maximum memory’ checkbox.
OR
- Open CMD as administrator
- Type „bcdedit /set removememory 8192” – where the numbers are, you enter the amount of memory (in megabytes) that you want to subtract from the available memory, for example: 16GB – 8192 = 8GB.
- Enter and restart
If you want to undo the operation, you simply need to type in CMD „bcdedit /deletevalue removememory”

