I need to access sdc2 & sdc4 from SUSE, have shared the partitions already but i am unable to write data there. I checked permissions, it says only owner can change the permission. I need to get rw access for a normal user. Have chmod it already but it didnt work.
There may not be a group called david, you are probably in group users. So
chown david:users /mnt/sdc4
BTW, /mnt/* is not a good place to mount things longer than temporarily because /mnt is often used already. Something like /backup, or /extra or whatever makes sense to you.