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Possible Duplicate:
How to delete/edit files from readonly filesystem

i have a memory card (MS-DOS file system I believe) which I want to delete ALL the files in it.
Even though I use sudo rm -fr * I still get

Read-only file system

For the files in the memory card folder.
How do I remove all the files? (Or maybe just format it?)

Community
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Itay Moav -Malimovka
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1 Answers1

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How to delete an SD CARD

Hi,

... try the "dd" command. It securely overwrites all with zeros. First, get the device by :

sudo fdisk -l Your device will be something like sdX. (sdX --> only an example device name)

and be sure to identify the right device. Then use "dd" to overwrite the sd card with ZEROs:

sudo dd if=/dev/zero of=/dev/sdX

While dd is working on your sd card, you won't see a progress bar , so wait until dd has finished :o)

alternatively try this "shred" command (it takes time !!!):

sudo shred -vfz -n 100 /dev/sdX

You will find here an example, how to use "shred" with sd cards.

Kind regards

user85321
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