![]() What I am basically looking for is an alive link to the first or any similar quote from Microsoft itself, confirming a "Full Format" on any modern Windows (7, 8 and/or 10) system would perform a bad sector check by writing the zeroes OR any proof that it does that (maybe by personal experience). Microsoft only speaks about that in any modern Windows version beginning at Vista doing a "Full Format" would perform a complete zero-write to the hard disk, but they do not say that the zero-writing process would be connected to a check for bad sectors. In Windows XP and earlier versions of Windows, the format command doesn't write zeros to the whole disk when a full format is performed." The change to formatting a disk applies to all methods of formatting a disk with the built-in tools contained within Windows. By default in Windows Vista and later versions, the format command writes zeros to the whole disk when a full format is performed. 2 Answers Sorted by: 2 But does the Disk Management tool (diskmgmt.msc) do that too Yes The linked article applies to all versions of Windows 10. Vista & Windows 7: Actually performs a rewrite pass over the entire drive. Existing data is not overwritten or erased and the extra time involved is totally taken up by the disk checking function. "The behavior of the format command changed in Windows Vista and later Windows versions. Regular Format: Pre Vista: Is exactly the same as the Quick Format except it also checks the drive for any bad sectors (same as running chkdsk /r). The link for the first quote to the Microsoft pages is dead, the link for the second is alive but only says this (emphasize mine): In Vista and later, this is accomplished by writing zeros to the entire partition. ![]() The scan for bad sectors is responsible for the majority of the time that it takes to format a volume. When you choose to run a regular format on a volume, files are removed from the volume that you are formatting and the hard disk is scanned for bad sectors. First things first: I know I could use CHKDSK or any other third-party tool to detect bad sectors but this question is especially dedicated to whether a "Full Format" on modern Windows systems checks for bad sectors.
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