Apple - Creating an image from a Time Machine backup – "Operation Cancelled"
For some reason, this only works via command line using the
First, open Disk Utility, right click the source drive (the Time Machine volume), and choose Unmount. Do not eject it!
Then, open a Terminal window, and enter:
You should be able to locate your volume. For example, in my case, it was listed as follows:
/dev/disk5 (external, virtual): #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS Backup Apollo +500.0 GB disk5 Logical Volume on disk4s2 8577521E-D394-45A0-BB7E-26F9E19C1FE7 Unlocked Encrypted
Copy the identifier,
/dev/disk5. This is what we want to convert into an image.
Then, run the following command, which will create an encrypted image of the source volume:
hdiutil create /Volumes/Data/Backup.dmg -encryption -stdinpass -srcdevice /dev/disk5
/Volumes/Data/Backup.dmg is the target file. Change it according to your needs.
You need to use
sudo to run this command (left out for security reasons), so when you're sure it's correct, run
sudo hdiutil create ….
After hitting Enter, you will be asked for an encryption password. This takes a while, but it works:
Elapsed Time: 7h 15m 52.227s File size: 293424025874 bytes, Checksum: CRC32 $753B4175 Sectors processed: 976562496, 968645649 compressed Speed: 18.1Mbytes/sec Savings: 41.3% created: /Volumes/Data/Backup.dmg
For more options, run
This could be an OSX security issue. Try this:
- Open System Preferences
- Choose Security & Privacy and then click on the Privacy tab
- Select Full Disk Access from the list on the left
- If necessary, click the padlock icon to allow changes
- Click the + icon and add Disk Utility to the list of apps by browsing to it (
- Re-open Disk Utility and try making the image again.