I have a sdxc with 64gb capacity, that was supposed to be re-purposed. And with some really bad luck, the machine formatting the sd card crashed mid-process.
I now have an sd card with 2 partitions:
- 256mb Fat32 (boot)
- 63gb primary
I can access, read and write the boot partition, but cannot see the 63gig one.
What fails is, formatting or modifying partitions. I've tried all available windows system tools, as well as testdisk:
Here's the analyse output:
Disk \\.\PhysicalDrive2 - 63 GB / 59 GiB - CHS 7764 255 63
Current partition structure:
Partition Start End Size in sectors
Warning: number of heads/cylinder mismatches 64 (FAT) != 255 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != 63 (HD)
1 P FAT32 LBA 0 130 3 33 37 4 524288 [boot]
Bad relative sector.
2 P Linux 33 37 5 7764 108 24 124203008 [rootfs]
Bad relative sector.
No partition is bootable
Theoretically, clearing the partitions and the mbr works, yet shows no effect:
>[ Delete ] Delete all data in the partition table
Clear MBR partition table by writing zero bytes to it? (Y/N)
Clear partition table, confirm ? (Y/N)
Partition table has been cleared.
You have to reboot for the change to take effect.
Once this is done I am re-mounting the media and nothing has happened.
At this point, I'm at a loss. What could be the issue and more importantly: how can I resolve it. The goal is to get a single 64gig partition back and to use it in a GoPro.
Update I've now tried DiskGenius as well. The behavior is the same. I can delete the partitions and save, yet after this step the partitions re-appear.
The same goes for copying a file to the "boot" partition. It is shown as created, yet after remounting it is gone again.
