[SATLUG] read only usb fs

Mark Mayfield mark at kandm-solutions.com
Sat Sep 10 16:17:09 CDT 2011

sometimes vfat partitions will get automounted with defaults. By default
vfat has a mask that makes it read only. if this is the case you need to
mount it with the option umask=0000.
mount -t vfat /dev/??? /mount/point -o umask=0000

after that you should be able to write to it

On Sat, 2011-09-10 at 16:08 -0500, Borries Demeler wrote:
> When I try to mount/fdisk or otherwise write to 4 GB SD flash memory
> from my Canon camera I get an error message that the USB drive 
> cannot be written to or the partition table cannot be changed.
> There is a "lock" tab on the SD card, but neither position makes
> a difference. I suspect the Canon camera writes some sort of
> protection onto this card, so I am wondering how I can circumvent
> this write protection.
> It looks like a generic brand of SD card that came with the 
> camera.
> Any ideas on how to make this writable?
> -Borries

More information about the SATLUG mailing list