2022年9月14日 · The MFT reserve is definitely not the cause of such defect. Many people now have system volumes with a MFT larger than several gigabytes, even if there's never been more than 200k files using at most 250k MFT records (normal MFT record size can be 1KB on the main Windows volume, or 4KB for other volumes specially formatted for large data files).

2017年3月6日 · In the output, look for the Mft Valid Data Length line. The value is hexadecimal; you can convert it to decimal using the Windows calculator or by simply running it (starting with 0x) in PowerShell as a command. That gives you the number of bytes, which when divided by 1024 2 = 1048576 gives you the MFT size in MiB.

First, the MFT record size is not necessarily 1KB (it can be larger when the NTFS volume was prepared); then the MFT record starts at least by a "basic attributes" entry which consumes some bytes and which is always resident; it may be then followed by a resident entry for MFT extension (if there are too many attributes than can fit the MFT ...

I believe that NTFS started storing files in the space reserved for the Master File Table (MFT) and the MFT had to fragment elsewhere as it grew. I have cleared off space on the hard drive, but the MFT apparently remains fragmented, and there's a lot of slow disk access for even very simple operations like opening a folder or small file.

2015年10月22日 · Contrary to other answers, this IS possible, but can be challenging. Why might you want to do this? Windows often places the MFT in the middle of the disk for historical performance reasons - this can prevent shrinking of a volume as Windows won't shrink the volume beyond un-movable files (of which the MFT is one).

The MFT Zone is not subtracted from available (free) drive space used for user data files, it is only space that is used last. When the MFT needs to increase in size, for example, you created new files and directories, it is taken from the MFT Zone first, thus decreasing MFT fragmentation and optimizing MFT performance.

2012年2月9日 · It'll probably be considered corrupted by the OS if it doesn't accurately depict the current state. 2) The whole idea of backing up the MFT is to guard against MFT corruption, but what if the actual file data become corrupted? Then a perfect MFT is useless since ultimately, the files are what's important. Much better just to backup the files.

2017年3月5日 · The figure MFT Entry with Resident Record shows the contents of an MFT record for a small file or folder. Small files and folders (typically, 900 bytes or smaller) are entirely contained within the file’s MFT record. How NTFS Works. As an example I created an example 1000-byte file with very minimal metadata that can be stored completely in ...

2023年9月2日 · There are free defrag tools that may allow you to move the MFT fragments towards the start of the drive, the Windows defrag API even allows for this to be done 'online', and I think even Defraggler can do it. My own DiskTuna tool was capable of doing it too, but since it's over a decade old and not touched since then, I'd use something else.

TestDisk also failed to recover the MFT (anyway, the so-called "MFT mirror" only mirrors the first few sectors of the MFT, so there are few cases where this may work). I first saved all the files and folders (using DMDE, a complex but excellent data recovery software), then I examined the partition with WinHex : I discovered that the MFT ...