Permission denied on /mnt/hdg1/test no matter what I do!
 

I've chmod'd /mnt/hdg1/test as 777..... added my user account to the "users" group in /etc/group and /etc/group- files.... no matter what I do I get the following message:

Error creating directory '/mnt/hdg1/test': Permission denied

while trying to make a directory there.

Any ideas?

Try chown user:group /mnt/hdg1. Also, what type of file system is mounted under that directory? If it's FAT32 you might need umask=000 in fstab. If it's NTFS you may be SOL...