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Date: Wed, 07 Jan 2015 14:21:54 +0100
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: [ANNOUNCEMENT] TEST RELEASE: Cygwin 1.7.34-003
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On 1/7/2015 2:05 PM, Angelo Graziosi wrote:
> Corinna Vinschen wrote:
>> I released another TEST version of the next upcoming Cygwin release.
>> The version number is 1.7.34-003.
>>
> For almost an year I have used, on Win7 U 64 and Cygwin 64, an USB key (to backup my Cygwin HOME), formatted NTFS, both with Cygwin 1.7.33 (i.e. using /etc/{group,passwd}) and test Cygwin (like 1.7.34 using only a default nsswitch.conf). On this USB key the files and folders had alway owner ‘angelo’ and group ’None’.
>
> Now I  reinstalled from scratch Win7 U 64 (the same, only I used an usb bootable instead of CD/DVD), and so reinstalled Cygwin64.
>
> To reinstall Cygwin 64 I did this:
>
> 1. Installed the default (next, next,.. in setup-x86_64.exe), i.e. Cygwin 1.7.33
> 2. I didn’t start Cygwin but with Explorer I renamed /etc/group in /etc/group-save and the same for passed.
> 3. Copied nsswithch.conf from my backups (it contains the default)
> 4. Restarted setup-x86_64.exe and installed the test release, i.e. Cygwin 1.7.34.
>
> Now on that USB key the files and folders have owner ‘Unknown+User’ and group ‘Unknown+Group’. I have also some difficulties in having full control. Sometimes I have to start MinTTY as administrator.
>
> Are all these facts to be expected with 1.7.34 in a new reinstallation of the OS?

If re-installation created new SID's for you machine, than the old SID 
stored in the USB STICK file descriptors are not recognized.

Compare the output of /usr/bin/mkpasswd.exe
with a previous copy of /etc/passwd, if available

Or look with windows explorer at "properties->security" for
some of the files in the STICK


> For example, when I use that USB key on OS X (which can only read NTFS partitions), the files have owener ‘angelo’ and group ’staff’ as on my OS X HOME.
>
> To summarize, the same USB key has:
>
>
>                          OS                                                      OWENER              GROUP
>
> Cygwin 1.7.33/34 before OS reinstallation                    angelo                   None
>
> Cygwin 1.7.34 after OS reinstallation                    Unknown+User        Unknown+Group

probably chown / chgrp will be helpful

>
> OSX 10.10                                                                   angelo                      staff
>
>
> Ciao,
>   Angelo.
> --

Regards
Marco


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