When run, Microsoft FDISK may destroy some data on your drive.
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 a Microsoft FDISK program on it!
For more info, see: What does MS-FDISK.EXE do to a Hard Drive?
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