I read somewhere that Windows automatically creates a mirror entry for each file in a directory to support older programs that don't read LFNs - is it possible to disable this feature to reduce bloating?


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Reduce bloating? Have a look at the size of your average file.
I bet it is greater than 10,000 bytes. A short file name requires
11 bytes, or around 0.1% of the average file size . . . Now
since the cost of disk space is less than $1.00 per Gigabyte,
you would save 10 billionths of a Dollar per file if you could
disable this feature (which I don't think you can).


"xp_user" <(E-Mail Removed)> wrote in message
news:5vxBg.1974$uW1.890@dukeread06...
> I read somewhere that Windows automatically creates a mirror entry for
each file in a directory to support older programs that don't read LFNs - is
it possible to disable this feature to reduce bloating?
>
>
> --------------= Posted using GrabIt =----------------
> ------= Binary Usenet downloading made easy =---------
> -= Get GrabIt for free from http://www.shemes.com/ =-
>

On Sun, 6 Aug 2006 21:24:03 -0500, "xp_user" wrote in
microsoft.public.win2000.file_system:

>I read somewhere that Windows automatically creates a mirror entry for each file in a directory to support older programs that don't read LFNs - is it possible to disable this feature to reduce bloating?
[Try to keep line length to something reasonable, like 72 characters]

Two methods spring to mind:

fsutil behavior set disable8dot3 1

or the registry:

Key: HKLM\SYSTEM\CurrentControlSet\Control\FileSystem
Name: NtfsDisable8dot3NameCreation REG_DWORD 1

Reboot. Existing SFNs will remain.

Be prepared for a number of things to break - the registry is full of
SFNs, SFNs with spaces in them can no longer be accessed, and you can
expect some unfortuitous results from restoring a backup.

For completeness' sake, here is how one can disable LFNs:

Key: HKLM\SYSTEM\CurrentControlSet\Control\FileSystem (same as above)
Name: Win31FileSystem REG_DWORD 1

This is of course even more likely to break stuff.

Your call.

--
Michael Bednarek http://mbednarek.com/ "POST NO BILLS"

"Michael Bednarek" <ROT13-(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On Sun, 6 Aug 2006 21:24:03 -0500, "xp_user" wrote in
> microsoft.public.win2000.file_system:
>
> >I read somewhere that Windows automatically creates a mirror entry for
each file in a directory to support older programs that don't read LFNs - is
it possible to disable this feature to reduce bloating?
> [Try to keep line length to something reasonable, like 72 characters]
>
> Two methods spring to mind:
>
> fsutil behavior set disable8dot3 1
>
> or the registry:
>
> Key: HKLM\SYSTEM\CurrentControlSet\Control\FileSystem
> Name: NtfsDisable8dot3NameCreation REG_DWORD 1
>
> Reboot. Existing SFNs will remain.
>
> Be prepared for a number of things to break - the registry is full of
> SFNs, SFNs with spaces in them can no longer be accessed, and you can
> expect some unfortuitous results from restoring a backup.
>
> For completeness' sake, here is how one can disable LFNs:
>
> Key: HKLM\SYSTEM\CurrentControlSet\Control\FileSystem (same as above)
> Name: Win31FileSystem REG_DWORD 1
>
> This is of course even more likely to break stuff.
>
> Your call.
>
> --
> Michael Bednarek http://mbednarek.com/ "POST NO BILLS"

Now this is a useful command, fsutil.exe! Until now I had been
unaware of it. It seems to come with WinXP only but the WinXP
version appears to run well under Win2000.

On Sun, 6 Aug 2006 21:24:03 -0500, "xp_user" <(E-Mail Removed)> wrote:

>I read somewhere that Windows automatically creates a mirror entry for each file in a directory to support older programs that don't read LFNs - is it possible to disable this feature to reduce bloating?
>
>
>--------------= Posted using GrabIt =----------------
>------= Binary Usenet downloading made easy =---------
>-= Get GrabIt for free from http://www.shemes.com/ =-

If you have no 16-bit applications, you can implement
tip 0026 » NTFS - Disable 8.3 Name creation.
in the 'Tips & Tricks' at http://www.jsifaq.com

Jerold Schulman
Windows Server MVP
JSI, Inc.
http://www.jsiinc.com
http://www.jsifaq.com