If you don't mind the security problems you can do a recursive chmod in order to change the permissions of all the files. Cd /media/your_external_drive sudo chmod -R -v 777 * Also if your files were created in another OS like windows they will have different ownership you can do the same as above to change the ownership of the files cd /media/your_external_drive sudo chown -R -v your_username:your_username * Thats the way I solved a similar problem for my friend after migrating from windows and also after migrating from Linux Mint to Ubuntu. I had the same problem and solved it with nautilus as root. If nautilus is not installed: sudo apt-get install nautilus Before running nautilus make sure the partition or hard disk is mounted. Run nautilus as root with sudo nautilus Your partition or hard disk should appear on the left. Right click on it -> select 'Properties' In the new window that appears, select the 'Permissions' tab.

But in order to mount the drive in read-write mode you have to create this mount point “/Volume/Seagate Backup plus” yourself. Here are the steps to mount an NTFS drive in read/write mode: 1. Plug in the drive and let Mac OS X mount it read-only. Look in the Finder to see the name of the drive. If you want to write to/edit an NTFS formatted drive on macOS, a format commonly used for drives that interface with Windows computers, there’s a couple ways of doing it.

From here you can change the owner if you need to, as well as the permission for a certain user, root, or others. I look around the forum for answers. I have 3 users, 'user1','user2', 'user3': • user1: is sudo user with most of the access • user2: is also sudo user with less access • user3: is just another user with no sudo access Im trying to give access to partitions 1 and 2 to user1, user2 and user3. The owner of the partition is root. The partitions are mounted at /media/user2/1 /media/user2/2 Note: I tried to mount the partition using sudo mkdir /media/IntHDD170 sudo mkdir /media/IntHDD171 Which created the directory to mount the partitions. • (I dont know this worked or not) Step 1: • Used nautilus as root. • if nautilus is not installed: sudo apt-get install nautilus • Before running nautilus make sure the partition or hard disk is mounted.

• Run nautilus as root with sudo nautilus • Your partition or hard disk should appear on the left. Right click on it -> select 'Properties' In the new window that appears, select the 'Permissions' tab. • Kept the owner as 'root' and group as 'user1' with read and write access for both owner and group. From here you can change the owner if you need to, as well as the permission for a certain user, root, or others. Note: The user1,user2 and user3 did not get access to the partitions yet Step 2: Added User2 and user3 to group 'user1'.

Usermod -aG user1 user2 usermod -aG user1 user3 Step 3: Did chmod -R 777 /media/user2/1 chmod -R 777 /media/user2/2 • opened sudo nano /etc/fstab • Went to the last line entered: LABEL=/dev/sda3 /media/$USER/1 auto nosuid,nodev,nofail,x-gvfs-show 0 0 LABEL=/dev/sda4 /media/$USER/2 auto nosuid,nodev,nofail,x-gvfs-show 0 0 • Saved and Exited Note: Now i am able to read and write files to the partitions 1 and 2. • Only issue is, if i have logged into user1, then try to access partition 1 from user2, it is not accessible.

I do a reboot: sudo reboot And access partition 1 from user2. I don't know if this is the right way to do it.

Just combined many responses and did. Somehow its working.

If you don't mind the security problems you can do a recursive chmod in order to change the permissions of all the files. Cd /media/your_external_drive sudo chmod -R -v 777 * Also if your files were created in another OS like windows they will have different ownership you can do the same as above to change the ownership of the files cd /media/your_external_drive sudo chown -R -v your_username:your_username * Thats the way I solved a similar problem for my friend after migrating from windows and also after migrating from Linux Mint to Ubuntu. I had the same problem and solved it with nautilus as root. If nautilus is not installed: sudo apt-get install nautilus Before running nautilus make sure the partition or hard disk is mounted. Run nautilus as root with sudo nautilus Your partition or hard disk should appear on the left.