Bizarre directory delete behaviour on SSD drive

Question

Directory c:\\test has 50 or so files in it, no subdirectories.

    If IO.Directory.Exists(\"C:\\test\") Then
        IO.Directory.Delete(\"C:\\test\", True)         


        

Answer 1

After exploring System.IO.Directory with reflector, it looks like .Delete is just a wrapper around the FindFirstFile, FindNextFile, and RemoveDirectory Win API calls. There's nothing threaded or asynchronous about the .Net runtime's invokation of those API calls, or the API implementation themselves.

Now, supposing its somehow a TRIM issue, you can disable TRIM by opening an elevated command prompt and using fsutil:

fsutil behavior set disabledeletenotify 1

To enable, run the same command with 0 as parameter.

To query, use query as the command argument:

fsutil behavior query disabledeletenotify