I execfute the following command as root..
akroneiro:/home/alaios/Documents/My Pictures # chgrp -R users .
chgrp: changing group of `./Desktop.ini': Operation not permitted
chgrp: changing group of `./Sample.jpg': Operation not permitted
chgrp: changing group of `./spyros.jpg': Operation not permitted
chgrp: changing group of `./spyros.psd': Operation not permitted


Why is this happening??/
akroneiro:/home/alaios/Documents/My Pictures # ll
total 419184
dr-xr-xr-x 4 alaios root 16384 2006-02-28 15:56 .
drwxr-xr-x 28 alaios root 16384 2006-03-06 11:08 ..
-rwxr-xr-x 1 alaios root 32061 2005-11-29 21:03 003.jpg
-rwxr-xr-x 1 alaios root 216937 2005-11-28 22:16 agia-sofia.jpg
-rwxr-xr-x 1 alaios root 7889248 2005-11-28 22:16 agia-sofia.psd
-rwxr-xr-x 1 alaios root 10546260 2006-01-18 10:20 asyrmates.psd
drwxr-xr-x 2 alaios root 16384 2005-07-25 19:28 created images


The group is valid
akroneiro:/home/alaios/Documents/My Pictures # cat /etc/group | grep users
users:x:100:

Are you trying to change the permissions of all the files in a directory? If so try

reddazz, I think
should work just fine.

I'm guessing the problem lies elsewhere.

alaios, what kind of filesystem are you working on? "My Pictures" seems a bit Windows-alike to me.
.psd files are usually created in Adobe Photoshop. Photoshop only has Win & Mac versions, no Linux ones.
So I'm guessing you're trying to access some old Win partition, perhaps a FAT32 one, which doesn't support
group ownership.

Please post the output of:

Thx a lot.. I know that the current folder is a fat32 partition.

i give the linje u are intrested in
/dev/hda5 /home/alaios/Documents vfat user,uid=1000,codepage=737,iocharset=iso8859-7 0 0