Difference between "chkdsk /r /x" and "chkdsk /offlinescanandfix"

Question

What is the difference between chkdsk /r /x and chkdsk /offlinescanandfix ?

Answer 1

Hello,

chkdsk /r /x:

/r: Locates bad sectors on the disk and attempts to recover readable information. This includes the functionality of /f, which fixes errors on the disk.

/x: Forces the volume to dismount first, if necessary. This also includes the functionality of /f.

chkdsk /offlinescanandfix:

Runs an offline scan and fixes errors on the volume. This command also requires the volume to be dismounted, but it focuses on performing the scan and fix operations offline.

In summary, both commands are used to check and repair disk errors, but chkdsk /r /x is more comprehensive as it includes locating bad sectors and recovering data, while chkdsk /offlinescanandfix focuses on performing these tasks offline.

Answer 2

It is detailed in the doc :

"

/r Locates bad sectors and recovers readable information. The disk must be locked. /r includes the functionality of /f, with the additional analysis of physical disk errors.

/x Forces the volume to dismount first, if necessary. All open handles to the drive are invalidated. /x also includes the functionality of /f.

/offlinescanandfix Runs an offline scan and fix on the volume.

"