Thursday, July 23, 2009

Delete DrWtsn32.log to free up space

Just found a large file while defragmenting my hardrive. The DrWtsn32.log file holds about 400MB. That's a lot!

It is safe to delete this file?

After googling, I found out that the file was generated from Dr. Watson Windows XP application itself. It is a program error debugger that detects and diagnoses program errors and creates User.dmp and DrWtsn32.log files to contain the diagnostic data.

In Windows NT these files are stored in the %systemroot% folder. In Windows 2000, these files are stored in the %systemdrive%\Documents and Settings\All Users\Documents\DrWatson folder.

For Windows XP, these files are stored in the %systemdrive%\Documents and Settings\All Users\Application Data\Microsoft\Dr Watson folder.

The DrWtsn32.log file is appended each time a program error occurs; the User.dmp file is overwritten each time.

To turn off the Dr Watson debugger, apply the following Windows NT / Windows 2000 / Windows XP registry hack:

Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug
Name: Auto
Value: 0 disable
Value: 1 enable

To re-enable Dr Watson, you can change Auto back to 1 or from the command line type drwtsn -i.

For the conclusion, just delete DrWtsn32.log anyway. It's no harm whatsoever.

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