Reclaim CD-ROM Cache
If you do not use the CD-ROM drive very often, you could very well reclaim some precious memory. This could be especially useful for low-end computers.
1. Right click on My Computer and click on Properties.
2. Click File System from the Performance tab.
3. From the CD-ROM tab, you can configure the amount of cache that is assigned to the drive. Adjust the slider according to your needs. The minimum amount is 64KB and the maximum is 1238KB.
4. Changing the Optimise access pattern for drop-down selection also affects the amount of memory used (maximum for Quad-speed or higher and minimum for No read-ahead).