Windows: Enable generation of 8.3 Names

Hi,

in newer Versios of Windows the generation of the DOS Style 8.3 names is only enabled for Drive C: for all other volumes it is disabled by default.

If you need this “feature” you can either enabled it globally on a system or on a per volumes basis.

Check the current state

D:\> fsutil.exe 8dot3name query
The registry state is: 2 (Per volume setting - the default).
D:\> fsutil.exe 8dot3name query D:
The volume state is: 1 (8dot3 name creation is disabled).
The registry state is: 2 (Per volume setting - the default).

Based on the above two settings, 8dot3 name creation is disabled on D:

To enable it for all volumes

D:\> fsutil 8dot3name set 0

Or for a specific volume

D:\> fsutil 8dot3name set D: 0

and to disable it

D:\> fsutil 8dot3name set D: 1

Michael

Reference: Technet

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5 thoughts on “Windows: Enable generation of 8.3 Names”

  1. “in newer Versios of Windows the generation of the DOS Style 8.3 names is disabled by default.”
    WRONG!

    Windows 10 – clean install 08/08/18
    C:\Windows\system32>fsutil 8dot3name query C:
    The volume state is: 0 (8dot3 name creation is enabled).
    The registry state is: 2 (Per volume setting – the default).

    Based on the above settings, 8dot3 name creation is enabled on C:

    C:\Windows\system32>

    1. What the author probably meant is that by default, it’s disabled on all drive letters besides the system drive – which is C. So why don’t you take your autistic outbursts somewhere else. That’s right, I called you autistic since you just shout “WRONG!” like an idiot.

        1. This is not the case at all. Take for example my recently fresh install (as in, from a USB stick and everything) of Win10 v2004 (and this was very much the case back in v1903 as well, as I did a similar lookup then):

          8dot3 name creation is enabled on C:
          8dot3 name creation is disabled on D:
          8dot3 name creation is enabled on F:
          8dot3 name creation is disabled on G:
          8dot3 name creation is disabled on H:
          8dot3 name creation is disabled on O:
          8dot3 name creation is disabled on P:

          Partition C and D is on the same drive. All the remaining partitions are on separate drives.

          C:\ is the OS drive, and have 8.3 filenames enabled.
          F:\ is an really old drive from 2015 or possibly even earlier, and I have no idea what it has gone through.
          G:\ was created in May 2018, so Win10 v1803 that I used at the time.
          H:\ was created in October 2019, so Win10 v1903 that I used at the time.
          D:\, O:\, and P:\ all were created on v2004.

          As you can see, the only partitions that have 8.3 filename creations enabled are the C:\ drive (enabled during install of Windows 10) and a 5+ year old partition. No other partitions created since 2018 or later have had 8.3 filename creations enabled by default.

          1. Hi Derpinator,

            ok, thx. Correct is C: enabled and all other drives disabled by default. I altered the post.

            Michael

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