Edit /etc/fstab, e.g.

/dev/xvdb1      /home/git/data      ext4    defaults    0 0

ext4 file system does not support uid, gid and umask(which are very useful for FAT file system) options

Mount the hard drive

simple run mount -a

Change the disk owner

simply change the owner of the drive which will be remember by the file system after remount

chown -R username mount-point

You can also change the permission using chmod and chgrp for owner group (use usermod for group editing)