My Mac doesn't load an external drive and Disk Utility shows “Virtual Whole Disk” on red letters

[iRock1]

Hi,

I have a 1 TB WD My Passport. I'm desperately trying to connect it to my iMac, but it's not recognized.

I've even tried to format it, but all I get is this:

Repair disk doesn't work. You can see it by yourself:

Spoiler

Verifying and repairing partition map for “WD WDC WD10JMVW-11AJGS0 Media”Checking prerequisitesChecking the partition listAdjusting partition map to fit whole disk as requiredChecking for an EFI system partitionChecking the EFI system partition’s sizeChecking the EFI system partition’s file systemChecking the EFI system partition’s folder contentChecking all HFS data partition loader spacesChecking booter partitionsChecking booter partition disk3s3Repairing file system.Checking Journaled HFS Plus volume.Checking extents overflow file.Checking catalog file.Checking multi-linked files.Checking catalog hierarchy.Checking extended attributes file.Checking volume bitmap.Checking volume information.The volume Boot OS X appears to be OK.File system check exit code is 0.Updating boot support partitions for the volume as required.Reviewing boot support loadersChecking Core Storage Physical Volume partitionsVerifying storage systemChecking volumedisk3s2: Scan for Volume Headersdisk3s2: Scan for Disk LabelsInvalid Disk Label @ 895769595904: invalid field valueInvalid Disk Label @ 895773790208: invalid field valueInvalid Disk Label @ 895777984512: invalid field valueInvalid Disk Label @ 895782178816: invalid field valueInvalid Disk Label @ 999809830912: I/O error, invalid field valueInvalid Disk Label @ 999814025216: I/O error, invalid field valueInvalid Disk Label @ 999818219520: I/O error, invalid field valueInvalid Disk Label @ 999822413824: I/O error, invalid field valuedisk3s2 is not a CoreStorage volumeStorage system check exit code is 1.Repairing storage systemChecking volumedisk3s2: Scan for Volume Headersdisk3s2: Scan for Disk LabelsInvalid Disk Label @ 895769595904: invalid field valueInvalid Disk Label @ 895773790208: invalid field valueInvalid Disk Label @ 895777984512: invalid field valueInvalid Disk Label @ 895782178816: invalid field valueInvalid Disk Label @ 999809830912: I/O error, invalid field valueInvalid Disk Label @ 999814025216: I/O error, invalid field valueInvalid Disk Label @ 999818219520: I/O error, invalid field valueInvalid Disk Label @ 999822413824: I/O error, invalid field valuedisk3s2 is not a CoreStorage volumeStorage system check exit code is 1.Repairing storage systemChecking volumedisk3s2: Scan for Volume Headersdisk3s2: Scan for Disk LabelsInvalid Disk Label @ 895769595904: invalid field valueInvalid Disk Label @ 895773790208: invalid field valueInvalid Disk Label @ 895777984512: invalid field valueInvalid Disk Label @ 895782178816: invalid field valueInvalid Disk Label @ 999809830912: I/O error, invalid field valueInvalid Disk Label @ 999814025216: I/O error, invalid field valueInvalid Disk Label @ 999818219520: I/O error, invalid field valueInvalid Disk Label @ 999822413824: I/O error, invalid field valuedisk3s2 is not a CoreStorage volumeStorage system check exit code is 1.Problems were encountered during repair of the partition mapError: This disk needs to be repaired. Click Repair Disk.

Needless to say the drive has little use, so I doubt it's been damaged.

Ideas?

 

[JohnDS]

Was the drive ever encrypted at any time? The message you got usually occurs when the drive was encrypted or was part of a fusion drive.

Are you just trying to erase it to re-use it or do you need to recover data from it?
[doublepost=1453990442][/doublepost]Here is a possible solution: http://www.macissues.com/2014/04/05/how-to-fix-deep-formatting-problems-with-os-x-drives/

 

[iRock1]

Was the drive ever encrypted at any time? The message you got usually occurs when the drive was encrypted or was part of a fusion drive.

Are you just trying to erase it to re-use it or do you need to recover data from it?
[doublepost=1453990442][/doublepost]Here is a possible solution: http://www.macissues.com/2014/04/05/how-to-fix-deep-formatting-problems-with-os-x-drives/

Thank you. You saved my day, sir.

In fact the drive was encrypted. The procedure described in the article worked perfectly.