mount fat32 usb stick

rp101 · 2011-01-25 10:58:19

I have usb stick with fat32. I am trying to mount it for read and write. But it mounts as read only.
I tried few commands:
sudo mount -o rw,noauto,async,user,umask=1000 /dev/sdb1 /mnt/usbstick (this command from archlinux wiki page)
sudo mount -t vfat -o rw,noauto,async,user,umask=1000 /dev/sdb1 /mnt/usbstick
sudo mount -t vfat /dev/sdb1 /mnt/usbstick

ScriptDevil · 2011-01-25 12:33:45

Try mounting after checking the filesystem on the drive

rp101 · 2011-01-25 14:29:03

ScriptDevil wrote:

Try mounting after checking the filesystem on the drive

Sorry I do not understand what do you mean.

Mr Green · 2011-01-25 15:02:19

sudo fdisk -l

With drive plugged in

Last edited by Mr Green (2011-01-25 15:03:05)

adee · 2011-01-25 15:17:01

man fsck.vfat

rp101 · 2011-01-25 15:25:04

Mr Green wrote:

sudo fdisk -l
With drive plugged in

Yes of course it finds /dev/sdb1

sudo fdisk -l

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            8064    31293439    15642688    c  W95 FAT32 (LBA)

And I am able to mount it. But I can only read it.

By the way if I do:

cd /mnt/usbstick/
ls -l
total 256
drwxr-xr-x 11 root root 32768 Jan 18 16:21 documents
drwxr-xr-x 27 root root 32768 Dec 14 09:01 music
drwxr-xr-x 11 root root 32768 Jan 12 09:01 pictures
drwxr-xr-x  2 root root 32768 Jan 14 11:40 skype
drwxr-xr-x  3 root root 32768 Jan 23 17:52 video

The owner of the files is root. I tried to change owner with sudo chown... but I get message that I do not have permission.

Mr Green · 2011-01-25 15:32:01

Ok can you write a file to the stick as root?

rp101 · 2011-01-25 15:35:34

Mr Green wrote:

Ok can you write a file to the stick as root?

Yes. If I login as root I can write.

Mr Green · 2011-01-25 15:42:35

Ok one last thing to try, umount and remount somewhere you have access too like your home directory

create a folder usbdrive and then mount to that see if it makes any difference

Would suggest using pmount or udisk to make it easier to mount at cli, that is up to you

Another thing check you are a member of the correct groups for your user

Inxsible · 2011-01-25 15:43:53

sudo chown -R rp101:users /mnt/usbstick

doesn't work??

Mr Green · 2011-01-25 15:45:32

Of course it will work, but without the command he used no one will ever know the why!

Inxsible · 2011-01-25 15:48:58

Mr Green wrote:

Of course it will work, but without the command he used no one will ever know the why!

ok, you lost me there

rp101 · 2011-01-25 15:56:26

Inxsible wrote:

sudo chown -R rp101:users /mnt/usbstick

doesn't work??

This does not work. I get "Operation not permitted" for every file.

rp101 · 2011-01-25 16:00:35

Mr Green wrote:

Ok one last thing to try, umount and remount somewhere you have access too like your home directory
create a folder usbdrive and then mount to that see if it makes any difference
Would suggest using pmount or udisk to make it easier to mount at cli, that is up to you
Another thing check you are a member of the correct groups for your user

This also does not work.
I created usbdrive in my home directory. And I still have the same situation.

What about the user group? How to see what permissions my user group has?

rp101 · 2011-01-25 16:05:24

rp101 wrote:

Mr Green wrote:
Ok one last thing to try, umount and remount somewhere you have access too like your home directory
create a folder usbdrive and then mount to that see if it makes any difference
Would suggest using pmount or udisk to make it easier to mount at cli, that is up to you
Another thing check you are a member of the correct groups for your user
This also does not work.
I created usbdrive in my home directory. And I still have the same situation.
What about the user group? How to see what permissions my user group has?

I've made:

less /etc/group

root:x:0:root
bin:x:1:root,bin,daemon
daemon:x:2:root,bin,daemon
sys:x:3:root,bin
adm:x:4:root,daemon
tty:x:5:
disk:x:6:root
lp:x:7:daemon,rolandas
mem:x:8:
kmem:x:9:
wheel:x:10:root,rolandas
ftp:x:11:
mail:x:12:
uucp:x:14:
log:x:19:root
locate:x:21:
rfkill:x:24:
smmsp:x:25:
http:x:33:
games:x:50:rolandas
network:x:90:
video:x:91:rolandas
audio:x:92:rolandas
optical:x:93:rolandas,hal
floppy:x:94:hal
storage:x:95:rolandas,hal
scanner:x:96:
power:x:98:rolandas
nobody:x:99:
users:x:100:
dbus:x:81:
avahi:x:84:
hal:x:82:
vboxusers:x:108:rolandas
lxdm:x:121:

Inxsible · 2011-01-25 16:23:05

groups

will show you all the groups your user belongs to. Make sure you run it as your username and NOT as root though.

Mr Green · 2011-01-25 16:25:36

a simple

groups

will tell you what your user is a member of ....

honestly stumped as to why it does not work

ls -l usbdrive

in your home directory

EDIT beat me to it

Last edited by Mr Green (2011-01-25 16:26:03)

Inxsible · 2011-01-25 16:28:12

Have you tried running the command I gave you earlier as root??

# chown -R rp101:users /mnt/usbstick

Korrode · 2011-01-25 16:50:53

Personally, I use pmount to mount removal USB storage devices as my user account (not root), thus avoiding the kind of permission issues you're having.

sudo pacman -S pmount
pmount /dev/sdb1

(pmount will create a directory called "sdb1" in /mnt)

Mr Green · 2011-01-25 16:59:56

see post #9

rp101 · 2011-01-25 17:36:57

I found one way to solve the problem permission.
I added one line to /etc/fstab

/dev/sdb1      /mnt/usb      auto    noauto,user,rw,exec 0 0

And then

mount /dev/sdb1

pmount also works fine.
After

pmount /dev/sdb1

it created /media/sdb1 which I can access with rw permission.

Arch Linux

#1 2011-01-25 10:58:19

mount fat32 usb stick

#2 2011-01-25 12:33:45

Re: mount fat32 usb stick

#3 2011-01-25 14:29:03

Re: mount fat32 usb stick

#4 2011-01-25 15:02:19

Re: mount fat32 usb stick

#5 2011-01-25 15:17:01

Re: mount fat32 usb stick

#6 2011-01-25 15:25:04

Re: mount fat32 usb stick

#7 2011-01-25 15:32:01

Re: mount fat32 usb stick

#8 2011-01-25 15:35:34

Re: mount fat32 usb stick

#9 2011-01-25 15:42:35

Re: mount fat32 usb stick

#10 2011-01-25 15:43:53

Re: mount fat32 usb stick

#11 2011-01-25 15:45:32

Re: mount fat32 usb stick

#12 2011-01-25 15:48:58

Re: mount fat32 usb stick

#13 2011-01-25 15:56:26

Re: mount fat32 usb stick

#14 2011-01-25 16:00:35

Re: mount fat32 usb stick

#15 2011-01-25 16:05:24

Re: mount fat32 usb stick

#16 2011-01-25 16:23:05

Re: mount fat32 usb stick

#17 2011-01-25 16:25:36

Re: mount fat32 usb stick

#18 2011-01-25 16:28:12

Re: mount fat32 usb stick

#19 2011-01-25 16:50:53

Re: mount fat32 usb stick

#20 2011-01-25 16:59:56

Re: mount fat32 usb stick

#21 2011-01-25 17:36:57

Re: mount fat32 usb stick

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