WD Passport USB 3 Drive HSF Journaled is recognised but the drive won’t mount

How to use TestDisk to recover lost partition
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sanjeev
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Joined: 08 Jul 2016, 12:24

WD Passport USB 3 Drive HSF Journaled is recognised but the drive won’t mount

#1 Post by sanjeev » 08 Jul 2016, 18:32

I accidentally ran Recovery Disk Assistant:https://support.apple.com/kb/dl1433?locale=en_US on my USB HD .Then the Hard drive stopped mounting or showing up in Disk Utility .
It showed up in terminal though

On googling i found gdisk to be the only alternative after trying numerous software like Disk Drill,Disk Warrior,Paragon NTFS…, They all offered to recover my data.However i know that my data /all my files were intact.Just the partition map was messed up
I used gdisk and test disk. gdisk help me convert my MBR to GPT (after spend hours on it) and my drive then showed up in OSX Disk utility

"I Numbered the terminal commands for you convenience"

1.sanjeevvyas$ sudo gdisk /dev/disk1
GPT fdisk (gdisk) version 1.0.1
Partition table scan: MBR: protective BSD: not present APM: not present GPT: present
Found valid GPT with protective MBR; using GPT.

2. sanjeevvyas$ 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_HFS MacPro HD 250.1 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 /dev/disk1 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *2.0 TB disk1
The Partition shows up in my Disk Utility App but it doesn’t mount

3. sanjeevvyas$ diskutil mount /dev/disk1
Volume on disk1 failed to mount; if it has a partitioning scheme, use "diskutil mountDisk" If the volume is damaged, try the "readOnly" option

4. sanjeevvyas$ diskutil readonly /dev/disk1

diskutil: did not recognize verb "readonly"; type "diskutil" for a list sanjeevvyas$ diskutil mount readOnly /dev/disk1

5. sanjeevvyas$ diskutil verifyVolume /dev/disk1
Error starting file system verification for disk1: Invalid request (-69886) sanjeevvyas$
—> Upon analysis of another External HFS formatted drive i found i am missing an EFI EFI partition at id#1.I tried creating this with disk but was unable to
sanjeevvyas$ 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_HFS MacPro HD 250.1 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 /dev/disk1 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *2.0 TB disk1 1: Apple_HFS 2.0 TB disk1s1 /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk2 1: EFI EFI 209.7 MB disk2s1 2: Apple_HFS VideoUSBPASS1TB 999.8 GB disk2s2

I also posted this on stack overflow http://apple.stackexchange.com/question ... on-t-mount

Please help,I have already spent 2 days trying to salvage my files.I for sure know that there is a simple approach
Tnx and regards
Sanjeev

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cgrenier
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Re: WD Passport USB 3 Drive HSF Journaled is recognised but the drive won’t mount

#2 Post by cgrenier » 09 Jul 2016, 19:48

Try PhotoRec 7.1-WIP against this partition. It will not be able to repair your partition but it may recover your files.

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