Re: Overlays no longer showing up on "subst" drive

Tobias Schäfer wrote:

> According to
> http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/fs/getdrivetype.asp
>
> DRIVE_NO_ROOT_DIR is also returned for
> "The root path is invalid, for example, no volume is mounted at the path."

And what is a path which is not mounted? An UNC path :)

> Since I could actually turn the overlays on and off with "Network drives" I am
> pretty sure that for some reason DRIVE_NO_ROOT_DIR was returned for s: when
> it shouldn't have. I actually turned it one and off several times because I
> couldn't believe it.
>
> Since I cannot reproduce the behaviour any more their is little we can do at
> the moment.

Sometimes GetDriveType() can return 'network' for normal drives too.
Because it checks the drive type by measuring how long some operations
need. And if the drive you've mounted was just busy, GetDriveType()
could have returned the wrong type.

Stefan

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