Unable to write to USB disk

[Bergie5737]

I have set-up my USB disk as NAS. I can read it with a Linux, Windows and even my Android phone on wifi as well as over internet via FTP.

Problem is I cannot do any changes to the files on the disk. I've followed the wiki to the letter and searched high and low, but I simply cannot get a solution. (I have no problems with writing to a flash disk.)

I created and mounted the disk as /media/samsungdisk. Its also in fstab, as vfat, and it does mount correctly at boot. The samba server start as expected.

The below commands does not change any permissions.

sudo chown -R root:users /media/samsungdisk
sudo chmod -R ug=rwx,o=rx /media/samsungdisk

ls -l

give rwxr-xr-x. I've also tried to change only one file's permission, but it stay the same. Plugging the USB disk into an ubuntu machine, and I can read and write.

Any help will be much appreciated.

[scorp]

sudo chmod -R 777 /media/samsungdisk
worked for me

[Bergie5737]

Yes, I did try that as well.
In a windows machine I found that the disk only show up half its actual size, while Linux (Gparted) see the disk as I expect. There was a bootable flag set on the disk. I've decided to reformat the disk and will try again. Will post the results if it made a difference, now to do all the back-ups first... Sigh...

[Bergie5737]

I've formatted the disk, mounted and still unable to write to it.

I can create a directory with sudo, but even the newly created directory won't allow me to change permissions. I always get "Operation not permitted" when I do chmod. It makes no difference which method I use.

I can do file operations only via command line with sudo, obviously not what I plan to do.

Looks like I can shelve my NAS plan for the time being.

[fendersk8911]

Try changing the permissions of the /media folder. I've had this problem before

[Bergie5737]

Thank you.
I did just that, remounted the disk, changed permissions and was able to write to the disk for a while until automount. Then all of a sudden it was gone.

I realised that my fstab must be missing something. Searching searching and eventualy I found an entry that solved my problem. I add "umask=0" and removed the "default" as per the Raspi wiki.

All is working fine now straight from boot.

Your suggestion was the nudge I needed!

I found the Raspi wiki mostly confusing and often that it is inadequate for beginners like me. I now have a list as long as my arm of things I have to do "differently" than stock set-up to get myself going.

Next up, WiFi...

[fendersk8911]

Good deal, glad you were able to get it working Good luck with the Wifi!

[Daddyfix]

I am having the same problem with permissions to the USB. I looked in the raspi Wiki for directions for this problem but I can't find them anywhere.

Does anyone know what exactly to change in the /etc/fstab? Please provide a link to the rasp wiki entry if you find it.

Thanks,
I Love my Rpi

[stevhorn5]

Install usbmount (to auto mount the drive)

Code: Select all

sudo apt-get install usbmount

Format the drive as ext4 with gparted

Code: Select all

sudo apt-get install gparted

Find the path to the drive (probably /media/usb0)

Set ownership

Code: Select all

sudo chown pi:pi /media/usb0

[Daddyfix]

Thanks. This solved my problem.

[pabile]

I add "umask=0" and removed the "default" as per the Raspi wiki.

could you post the wiki link you mentioned here please. i could not seem to find it.

wanted to try:

Code: Select all

sudo apt-get install usbmount

but gives me a 404 error

[Thijxx]

I add "umask=0" and removed the "default" as per the Raspi wiki.

could you post the wiki link you mentioned here please. i could not seem to find it.

wanted to try:

Code: Select all

sudo apt-get install usbmount

but gives me a 404 error

You may want to try

Code: Select all

sudo apt-get update

and then try again