I chose a 1T external drive for time machine and checked the "encrypt backups" option. I thought it will only encrypt the backups, but as it seems it is now encrypting the whole drive which has quite some data on it and is not SSD ;). Is there a way to cancel the encryption process? I turned off Time Machine and chose another drive for it.
MacOS Encryption – How to Stop Disk Encryption in Progress
disk-encryptionencryptionfilevaultmacostime-machine
Best Answer
Yes, in 10.9+ you can roll it back while its busy encrypting
You will then be promted with the OS X password unlock/decrypt dialog. After that it starts decrypting. The
title_drive
you can look up withdiskutil list
orls -al /Volumes
Check the status with
Look for "Conversion Progress" and check if "Conversion Direction:" is set to "backward"