Fuckered SanDisk MicroSD Card 2

sudo ddrescue /dev/mmcblk0 card_backup


Press Ctrl-C to interrupt
rescued:    32096 kB,  errsize:       0 B,  current rate:   11796 kB/s
   ipos:    32047 kB,   errors:       0,    average rate:    9153 kB/s
   opos:    32047 kB,     time from last successful read:       0 s
Finished

sudo fsck.vfat -f -p /dev/mmcblk0

dosfsck 3.0.12, 29 Oct 2011, FAT32, LFN
Logical sector size is zero.

sudo dd if=/dev/zero of=/dev/mmcblk0
dd: writing to `/dev/mmcblk0': No space left on device
62689+0 records in
62688+0 records out
32096256 bytes (32 MB) copied, 8.08628 s, 4.0 MB/s

sudo hdparm -r0 /dev/mmcblk0

/dev/mmcblk0:
 setting readonly to 0 (off)
 readonly      =  0 (off)

sudo fdisk /dev/mmcblk0
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x55325113.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.

Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)