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FileVault 2 "issue" with an encrypted thumbdrive

I encrypted a 64GB USB thumbdrive and when it wiggled loose from it's port without being unmounted first, the FV2 encryption no longer recognizes the original password.


  1. Is there a way to recover from this?
  2. Is there a way to reformat the device (64GB thumbdrives are not that cheap)? I've tried various versions of OS X, Linux, and Windoze XP but because it is locked I can't reformat (If I can find and install Windoze 98, would it recognize a thumbdrive as being locked?).


TIA.

Posted on Aug 7, 2013 8:36 AM

Reply
10 replies

Aug 7, 2013 7:10 PM in response to etresoft

etresoft,


I wish it was true.


When I try to run First Aid I get the following:


Verify and Repair volume “disk2s1”

Repairing volume failed: Unrecognized file system.



Verify and Repair volume “Step1”

Checking storage systemChecking volume.

disk2s2: Scan for Volume Headers

disk2s2: Scan for Disk Labels

Logical Volume Group 7CCA7A5F-C634-4113-B082-4E797A07007C on 1 device

disk2s2: Scan for Metadata Volume

Logical Volume Group has a 16 MB Metadata Volume with double redundancy

Start scanning metadata for a valid checkpoint

Load and verify Segment Headers

Load and verify Checkpoint Payload

Load and verify Transaction Segment

Incorporate 0 newer non-checkpoint transactions

Load and verify Virtual Address Table

Load and verify Segment Usage Table

Load and verify Metadata Superblock

Load and verify Logical Volumes B-Trees

Logical Volume Group contains 1 Logical Volume

Load and verify 7963749D-B2EB-4358-894C-77505E33025C

Load and verify 5F166B75-4720-45C3-B5D7-84A395A2AED2

Load and verify Freespace Summary

Load and verify Block Accounting

Load and verify Live Virtual Addresses

Newest transaction commit checkpoint is valid

Load and verify Segment Cleaning

The volume 7CCA7A5F-C634-4113-B082-4E797A07007C appears to be OK.


Verify and Repair volume “Boot OS X”

Checking file systemChecking 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.


Verify and Repair volume “XFR”

Checking storage systemChecking volume.

disk2s2: Scan for Volume Headers

disk2s2: Scan for Disk Labels

Logical Volume Group 7CCA7A5F-C634-4113-B082-4E797A07007C on 1 device

disk2s2: Scan for Metadata Volume

Logical Volume Group has a 16 MB Metadata Volume with double redundancy

Start scanning metadata for a valid checkpoint

Load and verify Segment Headers

Load and verify Checkpoint Payload

Load and verify Transaction Segment

Incorporate 0 newer non-checkpoint transactions

Load and verify Virtual Address Table

Load and verify Segment Usage Table

Load and verify Metadata Superblock

Load and verify Logical Volumes B-Trees

Logical Volume Group contains 1 Logical Volume

Load and verify 7963749D-B2EB-4358-894C-77505E33025C

Load and verify 5F166B75-4720-45C3-B5D7-84A395A2AED2

Load and verify Freespace Summary

Load and verify Block Accounting

Load and verify Live Virtual Addresses

Newest transaction commit checkpoint is valid

Load and verify Segment Cleaning

The volume 7CCA7A5F-C634-4113-B082-4E797A07007C appears to be OK.

Checking file systemJournal need to be replayed but volume is read-only

Checking Journaled HFS Plus volume.

Checking extents overflow file.

Unused node is not erased (node = 5)

Checking catalog file.

Invalid key length

The volume XFR could not be verified completely.

Error: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.


And when I try a technique that help someone else with a similar problem it fails for me:


Hard disk bricked after using file vault with time machine

Last login: Wed Aug 7 21:35:16 on console

membp:~ me$ diskutil cs list

CoreStorage logical volume groups (2 found)

|

+-- Logical Volume Group A8A859A6-BD6D-4D3A-AB02-D59396DC937C

| =========================================================

| Name: Mountain_Lion

| Status: Online

| Size: 319213174784 B (319.2 GB)

| Free Space: 16777216 B (16.8 MB)

| |

| +-< Physical Volume C8D71655-A4E8-42BB-B342-DD1B0A012731

| | ----------------------------------------------------

| | Index: 0

| | Disk: disk0s2

| | Status: Online

| | Size: 319213174784 B (319.2 GB)

| |

| +-> Logical Volume Family 821F1825-068F-4259-B8AF-DEDF726F604D

| ----------------------------------------------------------

| Encryption Status: Unlocked

| Encryption Type: AES-XTS

| Conversion Status: Complete

| Conversion Direction: -none-

| Has Encrypted Extents: Yes

| Fully Secure: Yes

| Passphrase Required: Yes

| |

| +-> Logical Volume 955CBA0C-A36A-4EFD-ABA9-501E6FBA2097

| ---------------------------------------------------

| Disk: disk1

| Status: Online

| Size (Total): 318877626368 B (318.9 GB)

| Size (Converted): -none-

| Revertible: Yes (unlock and decryption required)

| LV Name: Mountain_Lion

| Volume Name: Mountain_Lion

| Content Hint: Apple_HFS

|

+-- Logical Volume Group 7CCA7A5F-C634-4113-B082-4E797A07007C

=========================================================

Name: Step1

Status: Online

Size: 65108008960 B (65.1 GB)

Free Space: 0 B (0 B)

|

+-< Physical Volume 7C052084-C46F-440C-80DC-DEBD9874D38D

| ----------------------------------------------------

| Index: 0

| Disk: disk2s2

| Status: Online

| Size: 65108008960 B (65.1 GB)

|

+-> Logical Volume Family 7963749D-B2EB-4358-894C-77505E33025C

----------------------------------------------------------

Encryption Status: Unlocked

Encryption Type: AES-XTS

Conversion Status: Complete

Conversion Direction: -none-

Has Encrypted Extents: Yes

Fully Secure: Yes

Passphrase Required: Yes

|

+-> Logical Volume 5F166B75-4720-45C3-B5D7-84A395A2AED2

---------------------------------------------------

Disk: disk3

Status: Online

Size (Total): 64789233664 B (64.8 GB)

Size (Converted): -none-

Revertible: No

LV Name: XFR

Volume Name: XFR

Content Hint: Apple_HFS

membp:~ me$ sudo diskutil cs deleteLVG 7963749D-B2EB-4358-894C-77505E33025C

Password:

Error deleting CoreStorage Logical Volume Group: Not a valid CoreStorage Logical Volume Group UUID (-69778)

membp:~ me$

Aug 7, 2013 7:21 PM in response to barubin

etresoft didn't say you could repair the drive; he said repartition.


As in erase and then rebuild a new partition table, effectively destroying the existing file system and starting fresh. Your data will be lost (but it appears to be lost anyway due to the encryption key being corrupted (or at least unrecognized))...but you will be able to use the drive again.

Aug 8, 2013 7:00 AM in response to g_wolfman

g_wolfman,


"Sorry about that Chief."


I didn't specify that the ONLY DU operation I can execute on any of the device's partitions is First Aid. I cannot erase, repartition, etc.


I've accepted that the data is lost (I have the originals so that isn't a problem) and I just want to have the use of my 64GB drive again.

FileVault 2 "issue" with an encrypted thumbdrive

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