# Microsoft Fdisk

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## Microsoft Fdisk

When run, Microsoft FDISK may destroy some data on your drive. While "`checking disk integrity`", FDISK writes all F6 hexadecimal bytes into the 1st and 7th sectors of each track it intends to use for FAT tables. If you have accidentally deleted a volume, do not run any Microsoft FDISK program on it!
For more info, see: What does MS-FDISK.EXE do to a Hard Drive?

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