How to fix sd card's MBR on terminal window?

yujwancab · 07-18-2013, 07:45 PM

Pls help me to have a command on how to fix mbr/format as new of my old sd cards.

Thank you.

GlennsPref · 07-18-2013, 08:07 PM

Quote:

Hi, Welcome to LQ!

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to clean/wipe mbr...including partition table....

Code:

dd if=/dev/zero of=/dev/sd(x) bs=512 count=1

as root...My flashdrive usually uses /dev/sdd, check yours first!

Code:

sudo dd if=/dev/zero of=/dev/sdd bs=512 count=1

"NOT sda1, for flashdrives type mount and note the usb device info.
unmount the device and check you have the correct info, it should be gone.
Remount the device and continue."

Hope this helps, regards Glenn

yujwancab · 07-18-2013, 08:16 PM

Hi Mr. Glenn,

I appreciate for your help & quick response, I will post results.

Thank You.

BTW: I'm new here in LQ.

Regards,
Yujwancab

yujwancab · 07-18-2013, 08:22 PM

Hi Mr. Glenn,

My SD cards size commonly 8GBytes. Is there any size to be given in "bs=512"?

Thanks.

rokytnji · 07-18-2013, 09:45 PM

Quote:

Originally Posted by yujwancab

Hi Mr. Glenn,

My SD cards size commonly 8GBytes. Is there any size to be given in "bs=512"?

Thanks.

http://www.linuxquestions.org/questi...-query-606489/

GlennsPref · 07-20-2013, 08:37 AM

It won matter what size the memory is, that is the bs (byte size)

Google is your friend.

lookup man dd