Master file table size ???

Layback Bear · May 7, 2006

After defraging with Diskeeper pro 10 it warned me that my Master file table is to small and is easy to fragment. MFT is 99% full. Should I make it bigger, what are the good and the bad in increasing the size. It also tells me once made bigger it can't be made smaller.
XP-PRO-SP2
300 GIG H/D with lots of free space

redduc900 · May 7, 2006

When more files are created, the $MFT will automatically / dynamically expand to accomodate them. What happens when you let Diskeeper increase the size of the MFT, is it adds a new DWORD value to the registry... NtfsMftZoneReservation , in the following location:

HKEY_LOCAL_MACHINE | SYSTEM | CurrentControlSet | Control | FileSystem]

The default DWORD value is 1, which reserve one-eighth of the volume for the MFT... and isn't visible under the above key. Diskeeper manually adds the DWORD and the value of either 2 or 3, which reserve one-fourth to three-eighths of the volume for the MFT. IMO let XP handle the size of the MFT, but use Diskeeper's boot-time tool to defrag the MFT.

Layback Bear · May 8, 2006

Thank you redduc900; you sure know alot of things about computing.
There is a lot of things Disckeeper does and I'm not sure what they all are but I will learn. It
sure defrags very quick.

stereo555 · May 11, 2006

redduc900 said:
When more files are created, the $MFT will automatically / dynamically expand to accomodate them. What happens when you let Diskeeper increase the size of the MFT, is it adds a new DWORD value to the registry... NtfsMftZoneReservation , in the following location:

HKEY_LOCAL_MACHINE | SYSTEM | CurrentControlSet | Control | FileSystem]

The default DWORD value is 1, which reserve one-eighth of the volume for the MFT... and isn't visible under the above key. Diskeeper manually adds the DWORD and the value of either 2 or 3, which reserve one-fourth to three-eighths of the volume for the MFT. IMO let XP handle the size of the MFT, but use Diskeeper's boot-time tool to defrag the MFT.

Great info and nicely done !

Going to check this too since Iam running DK10 Pro also ; but this may not apply to x64 .

Big thx

*edit*
seems this does not apply to x64 as my DEWORD is at "1"

Master file table size ???

Layback Bear

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redduc900

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Layback Bear

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stereo555

Overclocking is music to my soul

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