New answers tagged sd-card
Yes, gparted should work the same. However I have not tried it. I use mkfs.fat as supplied w/Ubuntu 14.04 to format various microSDHC and 64GB microSDXC.
If you want to possibly * remove everything then you can do your dd command; however, you'll still need to create a partition table. NOTE I'm going to use /dev/sdb because that is what you have in your original question I recommend fdisk. So you would do something like the following: # fdisk /dev/sdb Command (m for help): n Select (default p): p Partition ...
"fdisk" and "parted" are command line commands to deal with disk partition tables. You may try with them.
You don't mention unmounting before ejecting the card. If that isn't an omission when writing the question, there's your problem. Writing to any kind of disk is buffered: the operating system accumulates data to write in memory, then writes it to the disk when it judges it to be convenient. The data isn't necessarily written to the disk in the same order ...
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