Configure Protected-Mode Hard Disk Interrupt Handling (Windows 95/98/Me)
This switch allows Windows to terminate interrupts from the hard disk controller, bypassing the ROM routine that handles these interrupts. Some hard drives might require that this setting be disabled in order for interrupts to be processed correctly. If this setting is disabled, the ROM routine handles the interrupts.

Control Windows Double Buffering Support (Windows 95/98)
Windows 98 includes double buffering support, some systems may have an incompatibility between the computer's BIOS and the Dblbuff.sys file.

Enabling UDMA66 Mode on Intel Chipsets (Windows 2000/XP) Popular
If you have a computer with an Intel chipset that supports UDMA66, you will still find that UDMA66 mode is disabled by default on Windows 2000 computers. This tweak allows you to enable or disable it.

Hard Disk Free Space Warning (Windows NT/2000/XP)
By default Windows sends an administrative alert when the amount of free space remaining on a hard disk drive falls below 10 percent. This percentage can be configured using this setting.

Control How NTFS Reserves Space for its Master File Table (Windows NT/2000/XP)
The NTFS file system contains at its core a file called the master file table (MFT). For every file on an NTFS volume there is at least one entry in the MFT. This setting controls the amount of space reserved for the MFT so that it does not become fragmented and slow system performance.

Disable CD Burning (Windows XP)
This restriction is used to disable the use of the inbuilt CD recording functions of Windows.

Change Drive Name and Icon (All Versions) Popular
This tweak allows you to change the name and icon shown in Explorer for a specific drive letter.

Specify the Program to Play Inserted Audio CDs (All Versions)
This value is used to specify which program should be used to play an audio CD when it is inserted and the autostart feature is enabled.

Control the CD-ROM Autorun Function (All Versions) Popular
Normally when you insert a disc into your CD-ROM drive, the contents are automatically launched. This tweak allows you to disable this behavior.