Fix XENIX bad blocks in a ExFAT drive?

Using TestDisk to repair the filesystem
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n3wb13
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Joined: 05 Jun 2016, 11:17

Fix XENIX bad blocks in a ExFAT drive?

#1 Post by n3wb13 » 05 Jun 2016, 11:30

I recently bought a 64GB Samsung microSD card formatted in ExFAT. I also tried to format it to NTFS but never succeeded. At first I tried to copy a 40GB file back and forth and the file checksums matched.

However, when I tried to use softwares to test the microSD card like H2testw and FakeFlashTest, both gave me an error message and couldn't process the test. Windows even asked me if I wanted to check and fix the drive or not after that. Even so, Chkdsk utility told that the drive was okay.

So I used TestDisk to check against the drive and the program listed that there were some sort of Xenix bad block. Here come the logs:

Code: Select all

Partition table type (auto): None
Disk \\.\PhysicalDrive1 - 64 GB / 59 GiB
Partition table type: Intel

Analyse Disk \\.\PhysicalDrive1 - 64 GB / 59 GiB - CHS 7783 255 63
Geometry from i386 MBR: head=256 sector=63
check_part_i386 1 type FF: no test
check_part_i386 2 type FF: no test
check_part_i386 3 type FF: no test
check_part_i386 4 type FF: no test
Current partition structure:
 1 * Xenix bad block      267349  89  4 534698 178  6 4294967295

Warning: Bad starting head (CHS and LBA don't match)
 2 * Xenix bad block      267349  89  4 534698 178  6 4294967295

Warning: Bad starting head (CHS and LBA don't match)
 3 * Xenix bad block      267349  89  4 534698 178  6 4294967295

Warning: Bad starting head (CHS and LBA don't match)
 4 * Xenix bad block      267349  89  4 313426 126 42  740229375

Warning: Bad starting head (CHS and LBA don't match)
Only one partition must be bootable
Space conflict between the following two partitions
 4 * Xenix bad block      267349  89  4 313426 126 42  740229375
 1 * Xenix bad block      267349  89  4 534698 178  6 4294967295

search_part()
Disk \\.\PhysicalDrive1 - 64 GB / 59 GiB - CHS 7783 255 63
     HPFS - NTFS              2  10  9  7783 139 36  125009920
     exFAT, blocksize=131072, 64 GB / 59 GiB

Results
   * HPFS - NTFS              2  10  9  7783 139 36  125009920
     exFAT, blocksize=131072, 64 GB / 59 GiB
Can anybody tell me how can I fix this please? The drive doesn't have any data so I can try whatever methods there are. Thank you very much for your help.
Last edited by n3wb13 on 05 Jun 2016, 16:45, edited 1 time in total.

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Re: Fix XENIX bad blocks in a ExFAT driev?

#2 Post by cgrenier » 05 Jun 2016, 16:39

As listed by TestDisk, your device isn't partionned.
Using Windows Disk manager, it's possible to create an PC/Intel partition table and next create an NTFS partition.
If it doesn't work, use your warranty to get a new memory card.

n3wb13
Posts: 2
Joined: 05 Jun 2016, 11:17

Re: Fix XENIX bad blocks in a ExFAT drive?

#3 Post by n3wb13 » 05 Jun 2016, 16:49

Thanks for the reply. I opened the Windows Disk Management, but I could neither delete/shrink/extend the volume or mark it as active. The only options available was to format. So how can I create that PC/Intel partition?

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