SanDisk 16GB only recognizes 67MB (testdisk/photorec)

How to use TestDisk to recover lost partition
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Author
renatogalvones
Posts: 2
Joined: 16 Jan 2019, 06:10

SanDisk 16GB only recognizes 67MB (testdisk/photorec)

#1 Post by renatogalvones »

Hello folks!

I have an SanDisk Cruzer Blade 16gb sdcz50-016g which stopped working when my wife's laptop went on a blue screen(windows).

Afterwards it never worked again and started to ask for formating which after some research, lead me here. I've read a lot of previous questions and only one was similar but the result was not clear to me.

First of all, I've noticed that the size is not correct and I don't have any clue how to fix it. I've read the docs, a lot of examples but I've no idea how to make it 16gb. I've even tried to "calculate" it, got the 16gb number, but no partition was found either.
Screen Shot 2019-01-16 at 03.20.58.png
Screen Shot 2019-01-16 at 03.20.58.png (21.28 KiB) Viewed 1020 times
When I'm asked to select partition table type, all but "NONE" give me no results. Even with "deeper search".
Screen Shot 2019-01-16 at 03.26.49.png
Screen Shot 2019-01-16 at 03.26.49.png (12.26 KiB) Viewed 1020 times
When selection "None" and then "advanced":
Screen Shot 2019-01-16 at 03.29.17.png
Screen Shot 2019-01-16 at 03.29.17.png (14.22 KiB) Viewed 1020 times
But then I've tried to select FAT12, FAT16, FAT32, NTFS, HPFS, and others I've always get the same results when I go to "boot" section:

Code: Select all

Disk /dev/disk3 - 67 MB / 64 MiB - 131072 sectors
     Partition                  Start        End    Size in sectors
   P FAT32                          0     131071     131072

Boot sector
Bad

Backup boot sector
Bad

Sectors are identical.
More data about the USB data can help:

Code: Select all

testdisk-7.0 diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *251.0 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk1         250.8 GB   disk0s2

/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +250.8 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD            203.3 GB   disk1s1
   2:                APFS Volume Preboot                 42.0 MB    disk1s2
   3:                APFS Volume Recovery                517.0 MB   disk1s3
   4:                APFS Volume VM                      4.3 GB     disk1s4

/dev/disk2 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     Apple_partition_scheme                        +23.7 MB    disk2
   1:        Apple_partition_map                         32.3 KB    disk2s1
   2:                  Apple_HFS Flash Player            23.7 MB    disk2s2

/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                                                   *67.1 MB    disk3

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testdisk-7.0 sudo fsck_hfs -r -d /dev/disk3
Password:
journal_replay(/dev/disk3) returned 22
** /dev/rdisk3
        Using cacheBlockSize=32K cacheTotalBlock=32768 cacheSize=1048576K.
   Executing fsck_hfs (version hfs-407.200.4).
        Block 2 is not an MDB or Volume Header
        Block 131070 is not an MDB or Volume Header
volumeType is 0
0000:  0000 0000 0000 0000 0000 0000 0000 0000       |................|
. . .
01f0:  0000 0000 0000 0000 0000 0000 0000 0000       |................|
        unknown volume type
        primary MDB is at block 0 0x00
        alternate MDB is at block 0 0x00
        primary VHB is at block 0 0x00
        alternate VHB is at block 0 0x00
        sector size = 512 0x200
        VolumeObject flags = 0x01
        total sectors for volume = 131072 0x20000
        total sectors for embedded volume = 0 0x00
        CheckForClean - unknown volume type
        CheckHFS returned 6, fsmodified = 0
Even on photorec the size is the same, so I can't rescue my files either. My feeling is I have to set clusters/heads/sectors correctly, but I dont have knowledge on it.

Can anyone help me on this?

Thanks in advance!
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cgrenier
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Re: SanDisk 16GB only recognizes 67MB (testdisk/photorec)

#2 Post by cgrenier »

It looks like an hardware problem. You should contact a data recovery company.
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renatogalvones
Posts: 2
Joined: 16 Jan 2019, 06:10

Re: SanDisk 16GB only recognizes 67MB (testdisk/photorec)

#3 Post by renatogalvones »

Dammit.

Thanks for replying, man!

Great software, btw.
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