Seagate Go Flex Encryption Problems

Mobster1983

macrumors 6502a
Original poster
Sep 8, 2011
629
453
I have two Seagate Go Flex 3TB drive and have been trying to format to Mac OS Extended (Journaled, Encrypted). Every time I try to erase and format to an encrypted drive I get the following error:

Disk Encryption Failed
Disk Erase failed with the error: Unable to create a boot loader partition due to the specifics of your partition map layout.

Anyone know how I can encrypt this drive?
 

mike457

macrumors 6502
Sep 10, 2010
278
0
Ontario
You probably need to change it over to GUID. If I recall, it comes as MBR. In Disk Utility under partitions, this should be an option.
 

iVoid

macrumors 65816
Jan 9, 2007
1,122
146
Apple's encryption (and SecureDoc FYI) doesn't support hard drives with 4k sectors (the new 'Advanced Format' drives).

I found this out the hard way after getting a 'deal' on 3TB drives but having to return them since they need to be encrypted for my setup.

Until Apple starts supporting encryption of 3TB drives (or any drive with 4k sectors), you're out of luck.
 

Mobster1983

macrumors 6502a
Original poster
Sep 8, 2011
629
453
Here's the disk information below from the Partition tab. The Partition Map Scheme just says Apple Partition Map. How to I check if it is MBR and how do I change it to GUID?

Disk Description :Seagate
Total Capacity : 3 TB (3,000,592,977,920 Bytes)
Connection Bus : FireWire
Write Status : Read/Write
Connection Type : External
S.M.A.R.T. Status : Not Supported
Partition Map Scheme : Apple Partition Map


iVoid Thanks for the info. I'm really hoping that's not the case.
 

iVoid

macrumors 65816
Jan 9, 2007
1,122
146
Here's the disk information below from the Partition tab. The Partition Map Scheme just says Apple Partition Map. How to I check if it is MBR and how do I change it to GUID?
When you goto partition the drive, there's an [Options...]button. Click that and you can set the partition scheme.


iVoid Thanks for the info. I'm really hoping that's not the case.
Sadly, I'm confident this is the case since I tried several 3TB drives and both failed to encrypt with both Apple's encrypted format and SecureDoc.
 
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