Mountain Lion allows one to encrypt any disk by right-clicking on the disk in the Finder and selecting Encrypt from the contextual menu.
Is there anyway to check on the progress of this encryption process?
Ask Different is a question and answer site for power users of Apple hardware and software. It only takes a minute to sign up.Sign up to join this community
Open up the Terminal and enter the command:
diskutil cs list
Or with APFS starting with 10.13
diskutil apfs list
With APFS the FileVault setup utility also shows health and this status:
You will see an output listing at least one Logical Volume Group, with a Logical Volume Family and Logical Volume nested below.
There is be a
Conversion Status item in the Volume Family entry that will tell you if it's converting to an encrypted volume or not, and for a progress indicator, look under the Logical Volume entry for
Size (Total) and
Size (Converted) entries, to see how many GB have been converted so far.
For an APFS volume, the output is simpler: there will be an
Encryption Progress entry with a percentage as a value (such as
16.0%). This entry will turn into an
Encrypted entry, with values
No. As a complement to the value of either field,
(Unlocked) may be present if the volume encryption is currently unlocked.
Encryption Status: Unlocked Encryption Type: AES-XTS Conversion Status: Converting Conversion Direction: forward Has Encrypted Extents: Yes Fully Secure: No Passphrase Required: Yes Disk: disk6 Status: Online Size (Total): 569869340672 B (569.9 GB) Size (Converted): 231454277632 B (231.5 GB) Revertible: Yes (unlock and decryption required) LV Name: Heap Volume Name: Heap Content Hint: Apple_HFS
Encryption Status: Unlocked Encryption Type: AES-XTS Conversion Status: Complete Conversion Direction: -none- Has Encrypted Extents: Yes Fully Secure: Yes Passphrase Required: Yes Disk: disk6 Status: Online Size (Total): 569869340672 B (569.9 GB) Size (Converted): -none- Revertible: Yes (unlock and decryption required) LV Name: Heap Volume Name: Heap Content Hint: Apple_HFS
The actual Terminal output is nested and longer. Here, only the most important information is listed.
Apparently decrypting an external disk is very slow (or even paused) if you use a laptop which is running on batteries. So always make sure to plug it into mains power when performing this operation.
On OS X 10.11.1 the output
diskutil cs list shows encryption progress as:
+-- Logical Volume Group 19B060CE-52A6-4102-9F3D-E6108BD91316 ========================================================= Name: My harddrive Status: Online Size: 499113885696 B (499.1 GB) Free Space: 18972672 B (19.0 MB) | +-< Physical Volume 3F2AE785-3A81-45E2-9A3B-93BA762C0AD2 | ---------------------------------------------------- | Index: 0 | Disk: disk5s2 | Status: Online | Size: 499113885696 B (499.1 GB) | +-> Logical Volume Family E4B845E2-2294-4F26-89B5-25ADE02747D2 ---------------------------------------------------------- Encryption Type: AES-XTS Encryption Status: Unlocked Conversion Status: Converting (forward) High Level Queries: Not Fully Secure | Passphrase Required | Accepts New Users | Has Visible Users | Has Volume Key | +-> Logical Volume 58EA9B33-CD1A-49F7-A596-E2C5ED6E24B5 --------------------------------------------------- Disk: disk6 Status: Online Size (Total): 498742591488 B (498.7 GB) Conversion Progress: 2% Revertible: Yes (unlock and decryption required) LV Name: My harddrive Volume Name: My harddrive Content Hint: Apple_HFS
For easier viewing use
diskutil cs list | grep Conversion to only show the line with the progress.
Just as an extra note to the existing answers, I ran this through
grep to get a concise answer to each conversion.
diskutil cs list | grep -e "Conversion" -e "Volume Name"
The result was:
| Conversion Status: Converting (forward) | Conversion Progress: 71% | Volume Name: Macintosh HD Conversion Status: Converting (forward) Conversion Progress: 4% Volume Name: Data
I combined the two answers by Nick Bedford and Owlyfool to produce this:
watch -n 5 "diskutil cs list | grep -e Conversion -e Volume\ Name"
You'll need the linux "watch" command for this. This runs the command by Nick every 5 seconds to give you an update, without scrolling the terminal a whole lot. Also shows a nice timestamp. Example output:
Every 5.0s: diskutil cs list | grep -e Conversion -e Volume\ Name Wed Jul 20 19:21:47 2016 | Conversion Status: Complete | Volume Name: Macintosh HD Conversion Status: Converting (forward) Conversion Progress: 1% Volume Name: Stijn_Spijker
Show my (already encrypted) internal disk, and my USB disk being encrypted.
Something a little simpler than above. From this File Vault question I also learnt that:
gives truncated output:
FileVault is Off. Decryption in progress: Percent completed = 20.58
(OS Sierra 10.12.5)
The accepted answer does not seem to work for APFS volumes. It seems that the only way here is to use
fdesetup status. This fantastic blog offers a script which basically uses that command to determine the status. In the article it reads:
If encrypted, the following message is displayed:
FileVault is On.
If not encrypted, the following message is displayed:
FileVault is Off.
If encrypting, the following message is displayed:
Encryption in progress: Percent complete = 27
If decrypting, the following message is displayed without quotes:
Decryption in progress: Percent complete = 10
These are also the outputs of
An alternative to the timed status reports in other answers that use
diskutil cs list or
diskutil apfs list, you can also use
For the currently booted volume:
while true; do fdesetup status | grep 'Percent' ; sleep 30; done
For a mounted external drive:
while true; do fdesetup status -device <disk identifier> | grep 'Percent' ; sleep 30; done
<disk identifier> is in a form like
disk3s1 corresponding to your external disk's system or data volume as found in