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filevault 2 "Unable to create boot loader partition due to the specifics of your partition map layout."

With a G-Drive Slim I get this message when trying to set up the disk for use with Time Machine and disk encryption. I tried Erasing the disk and it did not help. Time Machine seems to want a different partition layout on the drive. I notice people are having the same problem with other drives.

MacBook Pro, Mac OS X (10.7)

Posted on Jul 29, 2011 5:22 AM

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119 replies

Jul 29, 2011 6:57 AM in response to Property

Same Problem with G-Drive 750GB USB. Thought it was because I had formatted the drive with several partitions so I went back and tried to format drive via disk utility as [MacOS extended, journaled, encyrpted] with a single partition but shortly into the process it failed with the same message. Seems I cannot encrypt this drive either via Time Machine or Disk Utility. Currently using SuperDuper to create a bootable clone of my filevault2 encypted internal drive as my backup...

Jul 29, 2011 11:57 AM in response to Pondini

The disk came formatted, but when it didn't work I reformatted it on Lion (as above). Did that at the top level, so that I have "Hitachi 500GB ..." at the top and then "G-DRIVE Mini" at the level below, exactly as the disk came out of the box. Everything Mac OS Extended (Journaled) with the GUID map. The Time Machine process is happy to run as long as Encryption is not selected (I just tested that), but Time Machine seems unable to encrypt the disk. Can't think of anything else to do, besides returning it and waiting for 10.7.1.

Jul 29, 2011 10:34 PM in response to Property

Here's more information. I tried making the conversion at the command line. No luck.


rob@MBP2:~ $ diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER


0: GUID_partition_scheme *500.1 GB disk0

1: EFI 209.7 MB disk0s1

2: Apple_CoreStorage 499.2 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD *498.9 GB disk1

/dev/disk4

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk4

1: EFI 209.7 MB disk4s1

2: Apple_HFS TimeMachine3TB 3.0 TB disk4s2

rob@MBP2:~ $ diskutil cs convert /Volumes/TimeMachine3TB

Started CoreStorage operation on disk4s2 TimeMachine3TB

Resizing disk to fit Core Storage headers

Creating Core Storage Logical Volume Group

Attempting to unmount disk4s2

Switching disk4s2 to Core Storage

A problem occurred; undoing all changes

Undoing creation of Logical Volume Group

Reclaiming space formerly used by Core Storage metadata

Error: -69730: Unable to create boot loader partition due to the specifics of your partition map layout

rob@MBP2:~ $


http://www.youtube.com/watch?v=I568AnNzNdM

Jul 30, 2011 2:57 AM in response to rharder

I can report exactly the same problem (Lion, G-drive mini 500GB).


In my case, when I try to 'verify' the disk, I get the same problems as reported in this thread:


https://discussions.apple.com/thread/3221323?start=0&tstart=0


It seems clear to me (given that multiple users with different HDs are reporting related problems) that there is a bug in Lion somewhere.

filevault 2 "Unable to create boot loader partition due to the specifics of your partition map layout."

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