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Windows XP - Increase the MasterFileTable for optimization

February 9, 2013
Updated: April 14, 2022
Quick overview:

The first file on a hard disk that works with the NTFS file system is the MFT (Master File Table). It contains all information about all files and folders on the data carrier: file size, file creation and last modification dates, shares, content and file type. Unfortunately, the size of this important system file is limited, which slows down access to the files and folders, as the older information has to be deleted again and again and then re-entered later - which understandably costs computing time. This is equivalent to hard disk fragmentation. So if you have a lot of files on your computer, I recommend enlarging the MFT. Unfortunately, this trick does not work on FAT hard disks, as it would be pointless here due to the different system.

1. Click on Start/Run and type regedit in the command line.

2. After confirming with Enter, you will find yourself in the editor for the Windows registry database. Double-click to navigate through the keys HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\ Control\FileSystem.

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3. You can already see some entries in the right-hand pane. Now click on a free area here and select New > DWORD value. Now name this NtfsMftZoneReservation. Now double-click on NtfsMftZoneReservation and enter a number for the desired setting in the pop-up window:

1 = 12.5% of the data carrier
2 = 25% of the data carrier
3 = 37.5% of the data carrier
4 = 50% of the data carrier

The larger the MFT, the lower the chance of fragmentation, although memory consumption can of course also increase.

Founded Windows Tweaks as a teenager in 2001, his helpful PC tricks made it Germany's most visited Windows site (at the time Sandro looked like this). He then went on to write for international publications such as PC-Praxis, Computerbild, PCWorld in the USA, IMTEST.de and Hifi.de. Sandro's main job is as Global Product Marketing Lead and Consultant for various global tech companies, including Microsoft, AVG, Avast, Nero, TeamViewer, Swiss IT Security Group and now currently in the fintech sector for Gendigital. But he can't get rid of his passion and shares his tweaks here again. Privately, he enjoys traveling the world and loves Asia, especially Japan, Singapore and Korea, but also natural places like Iceland and the Nordics. You can reach Sandro via e-mail.

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