I have a 8Gig SD card that I've been trying to format but for some reason nothing seems to be able to do it. I've tried checking for overlapping start and end bits but clearly there is no overlap in them. Things I've tried:1. fdisk to delete the partition and also to create a new partition but, the  data still exists and no errors were shown.2. Tried the same as above using GParted but gparted gives a Overlapping    Partition error when there is only partition also there's a Invalid Argument for seek while write error generated by GParted.3. Used dd to fill the device with 0 but still wasn't able to format the card.4. Used shred as an alternative and no luck either.   I'd like to know what the problem really is or what other solution(s) can I try. UPDATEI tried sgdisk -Z on the Device and this is what I get as an error:  Warning! Secondary partition table overlaps the last partition by33 blocks!You will need to delete this partition or resize it in another utility.GPT data structures destroyed! You may now partition the disk using fdisk     orother utilities.Tried Resizing the start and end bits using GParted and Fdisk but they don't change anything and the start and end remain the same . Disk /dev/sdb: 7.5 GiB, 8026849280 bytes, 15677440 sectorsUnits: sectors of 1 * 512 = 512 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisklabel type: dosDisk identifier: 0x00000000Device     Boot Start      End  Sectors  Size Id Type/dev/sdb1        8192 15677439 15669248  7.5G  b W95 FAT32As visible, no other partitions exist.
SD Formatting problem
linux;dd;fdisk;gparted