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I have a 8GB SD card.

When inserted it show no partitions:

$ lsblk /dev/sdd
NAME MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdd    8:48   1 30.6M  0 disk

The fdisk say:

fdisk -l /dev/sdd
Disk /dev/sdd: 30.6 MiB, 32096256 bytes, 62688 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

It is about two years since I used it. Then I first used it with a raspberry and then went on to do some disk hacking – but I do not really recall what I did. I remember it ended up with 30M though.

A dump of the disk using dd show it only has zero bytes.

Is it likely corrupt? How to investigate further? Any tools that can yield some more information about it?

user129107
  • 241

1 Answers1

3

The card is almost certainly defective.

I had a similar issue, and asked the manufacturer (Sandisk). As it was new it was replaced under warranty.

I have seen a couple of similar reports, but no solution.

Milliways
  • 1,378