How to make USB writable ?

[niuk]

How I can make USB writable ?

root@pve:~# mount /dev/sdb1 /mnt/usb -o umask=000

root@pve:~# ls -l /mnt/
total 20
drwxr-xr-x 3 root root 4096 Mar 3 15:08 config
drwxr-xr-x 3 root root 4096 Mar 3 15:08 export
drwxr-xr-x 5 root root 4096 Mar 3 14:17 images
dr-xr-xr-x 1 root root 8192 Dec 30 2015 usb

I tried few things , it is still read-only

 

[udo]

How I can make USB writable ?

root@pve:~# mount /dev/sdb1 /mnt/usb -o umask=000

root@pve:~# ls -l /mnt/
total 20
drwxr-xr-x 3 root root 4096 Mar 3 15:08 config
drwxr-xr-x 3 root root 4096 Mar 3 15:08 export
drwxr-xr-x 5 root root 4096 Mar 3 14:17 images
dr-xr-xr-x 1 root root 8192 Dec 30 2015 usb

I tried few things , it is still read-only

Hi,
what kind of filesytem is on the usb?

mount | grep /mnt/usb

does an chmod help?

chmod 775 /mnt/usb

Udo

 

[niuk]

Chmod doesn't help

root@pve:~# chmod 775 /mnt/usb/
chmod: changing permissions of ‘/mnt/usb/’: Read-only file system
root@pve:~# mount | grep /mnt/usb/
root@pve:~#