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time machine turn off encryption

How do I turn off encryption for a Time Machine backup?


I have an external drive that I have been using unencrypted for a year or so. I recently connected it to a new macbook air in order to use as a Time Machine disk for that laptop, in addition to all of the other stuff it has stored on it (e.g. photos).


When setting up Time Machine, I opted to make the backup encrypted. Everything works fine. However, for other reasons, I would now like to turn encryption *off* (the reason is that encrypting the Time Machine back-ups is encrypting the entire disk, and that's inconvenient for other reasons).


I do not see a "turn off encryption" option with Time Machine -- i.e. no analog to the setting I initially chose to enable. If I open Disk Utility, the File menu contains an option to "Turn Off Encryption" but that option is grayed out -- I cannot select it.


One possible explanation I thought of is that Time Machine was not done encrypting the disk, and that perhaps you can't unencrypt a volume until it is done encrypting. However, I think encryption is complete (it no longer states that it is busy encrypting when I connect the disk to my laptop, but I also don't see a status indicator that encryption is complete either).


And so I repeat: how do I turn off encryption?

MacBook Air, OS X Mountain Lion (10.8.2)

Posted on Jan 14, 2013 3:17 PM

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Posted on Jan 14, 2013 4:49 PM

Read http://pondini.org/TM/31.html to turn off encryption.


It is recommended that other data not be stored on the same disk as Time Machine backups. It causes problems for Time Machine. The better method if you wish to store other data on the drive is to partition and then use one partition for Time Machine and the other for your data.


Allan

14 replies
Question marked as Top-ranking reply

Jan 14, 2013 4:49 PM in response to fwik

Read http://pondini.org/TM/31.html to turn off encryption.


It is recommended that other data not be stored on the same disk as Time Machine backups. It causes problems for Time Machine. The better method if you wish to store other data on the drive is to partition and then use one partition for Time Machine and the other for your data.


Allan

Jan 14, 2013 5:14 PM in response to Allan Eckert

Hi Allan,


Thanks for the link and the info.


I agree re: partitioning. I have a separate Time Machine partition on the disk for my old computer, but out of laziness I just backed up my new machine to the main volume on the disk, even though there was already (a significant amount of) data on it.


I've searched the internet high and low and no one seemed to have a solution. But thanks to that pondini link and a slight amount of creativity, I found a dead simple way to turn off encryption!


Here's how:

Open Time Machine

Turn Time Machine Off

Select Backup Disk and turn Time Machine back on

Choose NOT to encrypt Backup


Done! 10 seconds tops.

(of course it will take your computer some time to actually decrypt the volume... 🙂 )


No command line. No weirdness with Disk Utility not allowing me to disable encryption, etc.


Thanks again Allan!

Dec 2, 2013 3:34 PM in response to fwik

I too was under the mistaken belief that I would be able to turn off encryption the same place that I turned it on. This cannot be done from within Time Machine (at least not in OS X 10.9) - you need to do it from within the Disk Utility:


  1. Open Disk Utility
  2. Select the backup disk
  3. File > Turn Off Encryption...
  4. Enter the password for your encrypted disk


This will turn off encryption for your backup disk, and decrypt the data that is currently encrypted.

May 24, 2016 12:36 PM in response to OBLIV3ON

But what happens if I got to Disk Utility and follow your list but TURN OFF ENCRYPTION is GREYED out only when I select the BACKUP DRIVE!


Its like Time Machine holds a curse on the drive now stamping it ENCRYPTING…that is what it says when I open it in Time Machine


in Disk Utility there is nothing. I mean it shows up but I can't turn off encryption…..why?


What next? do I trash TIME MACHINE PREFERENCES?


do I go deep into the SYSTEM and ERASE HIDDEN FILES that TIME MACHINE has SITTING creating this nonsense?


I don't want to REPARTITION or ERASE the DRIVE it is still working……Nothing is CORRUPTED……..IF I repair it will that take care of it?


Please give me some ideas…because I don't want to BACK UP and WIPE the DRIVE just because I flicked the stupid TIME MACHINE SWITCH!!!!!!!!!!!!

what a gawd **** bother!!!!!!!!!!!!!!!!1

May 24, 2016 12:48 PM in response to Singleton Makin

ok I repaired the disk it asked me if I wanted to use it for TIME MACHINE i said no.


still does';t work...

look at this…info…how can I change the data in red??

Name : Seagate Backup Plus Drive

Type : Encrypted Logical Partition

Disk Identifier : disk6

Mount Point : /Volumes/Seagate Backup Plus Drive

Disk Status : Online

File System : Mac OS Extended (Journaled, Encrypted)

Writable : Yes

Universal Unique Identifier : 07F96A62-F5B7-3171-8D7B-BABE039FE1F8

Capacity : 999.53 GB (999,525,363,712 Bytes)

Used : 734.05 GB (734,052,958,208 Bytes)

Number of Files : 263,166

Number of Folders : 44,686

Owners Enabled : Yes

Can Turn Owners Off : Yes

Can Repair Permissions : No

Can Be Verified : Yes

Can Be Repaired : Yes

Can Be Formatted : Yes

Bootable : Yes

Supports Journaling : Yes

Journaled : Yes

time machine turn off encryption

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