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Date: Fri, 16 Mar 2007 16:50:55 -0400
From: Gustavo Seabra <gustavo DOT seabra AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Bug Report: Purging Old and Invalid User Names With Spaces
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Keith Mitchell wrote:
> Problem: Virgin Installs of CygWin on Windows XP work fine but a total 
> purge (deletion of all CygWin files and directories) and a fresh 
> reinstall with different set of usernames do not work properly, i.e., 
> usernames that have been CHANGED using the XP user manager to new 
> usernames. This problem occurred as a result of my changing all my 
> usernames with spaces to usernames without spaces to make them Linux 
> compatible.
>
> I wanted to thank all for the responses. After many reinstallations of 
> CygWin, I finally identified the problem and got things working. This 
> is just a bug report documenting my discoveries and what I believe is 
> going on.
>
> 1. A virgin install of CygWin makes a list of all user names on the 
> system. This list is reflected in /etc/passwd after any reinstall. I 
> am guessing this list is stored in the Windows XP registry as this 
> list does not exist on the drive where CygWin is installed, in my 
> case, the D drive. This list is NEVER updated on subsequent CygWin 
> installs. This is the REAL problem: no updates on subsequent installs.
>
> 2. Subsequent installations of CygWin utilize the aforementioned out 
> of date username list, even though those usernames have been changed 
> and are no longer valid
>
> 3. My problems occurred as a result of a conflict between the list of 
> original usernames that are no longer valid created by the first 
> virgin install of CygWin and usernames that currently valid after user 
> manager changes. This registry entry (or whatever the source of the 
> invalid usernames) entry needs either to either be purged before or 
> updated as a result of subsequent CygWin installs.
>
> Again thanks to all.
>
> Keith Mitchell
Hi Keith,

In the end, you didn't mention HOW you solved the problem...

BTW, I had one problem with WinXP a loooong time ago that could be 
related to that. I don't remember the details anymore, but the point is 
that after changing a username in WindowsXP, apparently the changes were 
made only "on the outside", meaning that I would "see" a different name 
but, internally, windows would still use the old one. Maybe what you are 
describing is really related to the way Windows handles the username 
changes, not Cygwin. (You can notice how much I "know" about that stuff, 
right :-) )

Gustavo.

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