I found out that on Windows XP Home, you need to log on in safe mode to get
full access to permission controls when you right click a file, or you have
to use CACLS at the command prompt. I was able to delete the cygwin
directory by logging on in safe mode, though the security tab features were
difficult to understand.
First I tried CACLS from the C:\cygwin directory. I entered:
CACLS *.* /t /e /g Owner:f
and the response was:
Processed file: C:\cygwin\Thumbs.db
The data is invalid
Then I tried:
del Thumbs.db
and the response was:
Could not find C:\cygwin\Thumbs.db
Maybe that makes sense. I wasn't sure about the commands. At least it's all
over now.