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I have Debian on my PC. I insert a USB flash and it open just fine in my Gnome environment. But when I try to copy something in it I get:

Error during copy.The destination is only for reading.

When I go to properties to see if I can change something from there it seems I cannot — the change I am making resets on it's own.

What should I do?

EDIT

If I use mount I get: 

/dev/sdb1 on /media/KINGSTON type vfat (ro,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0077,codepage=cp437‌​,iocharset=utf8,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udi‌​sks)

and

# mount -o remount,rw/dev/sdb1/ Usage: mount -V : print version mount -h : print this help mount : list mounted filesystems mount -l : idem, including volume labels So far the informational part. Next the mounting. The command is `mount [-t fstype] something somewhere'. Details found in /etc/fstab may be omitted. mount -a [-t|-O] ... : mount all stuff from /etc/fstab mount device : mount device at the known place mount directory : mount known device here mount -t type dev dir : ordinary mount command Note that one does not really mount a device, one mounts a filesystem (of the given type) found on the device. One can also mount an already visible directory tree elsewhere: mount --bind olddir newdir or move a subtree: mount --move olddir newdir One can change the type of mount containing the directory dir: mount --make-shared dir mount --make-slave dir mount --make-private dir mount --make-unbindable dir One can change the type of all the mounts in a mount subtree containing the directory dir: mount --make-rshared dir mount --make-rslave dir mount --make-rprivate dir mount --make-runbindable dir A device can be given by name, say /dev/hda1 or /dev/cdrom, or by label, using -L label or by uuid, using -U uuid . Other options: [-nfFrsvw] [-o options] [-p passwdfd]. For many more details, say man 8 mount . # remount bash: remount: command not found # mount -t remount,rw/dev/sdb1/ # mount -t remount,rw/dev/sdb1/ #

Why?

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3 Answers 3

Reset to default
3

Check dmesg.

Perhaps, the file system has been set read-only because the volume had not been properly unmounted and some data may be corrupt.

Is such case, you should unmount the file system and run fsck:

sudo fsck /dev/sdx
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Unmount the USB-drive and open up a new terminal.

First get the device name with:

sudo fdisk -l

(Example: /dev/sdb1)

Create new a mount point:

sudo mkdir -p /mnt/usb

Then mount the USB-drive back on with ownership set to you:

sudo mount -o uid=$(id -u),gid=$(id -g) /dev/sdb1 /mnt/usb/

In the command above, the only thing you have to change is the device name /dev/sdb1 to the one you found with the fdisk command.

Now you will have the ownership of the USB-drive and can do whatever you want.

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  • Hi and thanks for the answer. I try typing what you posted but i get: paranoia@dbn-up:~$ sudo fdisk -l [sudo] password for paranoia: paranoia is not in the sudoers file. This incident will be reported. Commented May 15, 2015 at 19:34
  • I have tried what you said, but as I commented, there appears to be a problem. Any suggestions? Commented May 15, 2015 at 19:55
  • Try to mount with async options,i heard somewhere that sync is dangerous for usb pen Commented May 15, 2015 at 20:03
  • @elbarna How to do that? Commented May 15, 2015 at 20:06
  • mount -o async /dev/yourpen /mnt/whereyouwant or edit fstab and options must be defaults,async if you get error on dmesg about usb trasnfer blocked or i/o errors consider the pen faulty or near faulty,but before this try another pen,or same pen on another usb port Commented May 15, 2015 at 20:07
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In my case I was trying to mount an NTFS drive that would only come up as read only. I then installed NTFS-3G and it then came up read/write.

sudo apt install ntfs-3g
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