Windows 7 pro sp1 backup to MyBook Essentials 3TB failing - 4KB logical sector size

  • Windows 7 Pro SP1
  • WD MyBook 3 TB

When i ran the “Fsutil fsinfo ntfsinfo” i see:

Bytes Per Sector  :               4096

Bytes Per Physical Sector :       4096

Bytes Per Cluster :               4096

Bytes Per FileRecord Segment    : 4096

So this appears to be an AFD disk using a 4k native format.

It seems that windows 7 doesn’t support 4KB logical sector sizes -

based on and 

How can i reformat the drive to comply with the logical sector size limits that windows imposes?

thank you

Maybe you should try contacting WD’s Technical Support about this. You can do so either by phone or email.

To Contact WD for Technical Support