I was not able to chmod a file in my /dev/sda3 on my Ubuntu12.04 system. This is what I get when I try to see its information:    $ mount | grep 'media'    /dev/sda2 on /media/sda2 type fuseblk (rw,nosuid,nodev,allow_other,blksize=4096)    /dev/sda6 on /media/sda6 type ext4 (rw)    /dev/sda3 on /media/sda3 type fuseblk (ro,nosuid,nodev,allow_other,default_permissions,blksize=4096)When I try to change the mode of /media/sda3 to rw, I get error:$ sudo mount -o remount,rw /media/sda3 Remounting is not supported at present. You have to umount volume and then mount it once again.So, I unmount /media/sda3$ sudo umount /media/sda3Then when I try to mount it again, I get the same error:$ sudo mount -o remount,rw /media/sda3 Remounting is not supported at present. You have to umount volume and then mount it once again.I guess, I do not know the right commands. I have done a couple of trial-n-error from google search, but no luck so far. And I am afraid to do a blunder. Any help on how to mount the filesystem with read-write permissions will be great. Thanks a lot!
Remounting is not supported at present. You have to umount volume and then mount it once again
filesystems;mount;readonly;read write
Don't use -o remount. That's only useful for remounting, that is, unmounting and mounting again in one operation which isn't supported in your case. Therefore, you need to unmount just like you did and then run:sudo mount -o rw /media/sda3 