Hi and Welcome. My Name is ***** ***** I look forward to assisting you today with your question.
Did you check Keychain Access app for the password ?
If you are sur the old password ***** ***** then give an attempt to change the password ***** something simple from Terminal. Terminal will allow you the pasting of old password. Or did you try this already ?
Yes. Please note this will not work if the old password ***** *****
Go to Applications folder and open Terminal.
Type the following command and press return
diskutil cs list
This will give the drives list (both internal and external)
Now locate and copy the the UUID of the "Logical Volume" for the external encrypted volume (don't copy the Logical Volume Group's UUID)
Then to change, use the following command
diskutil cs passwd UUID -oldpassphrase youroldpasswordcomeshere -newpassphrase yournewpasswordcomeshere
Press return and the password ***** be changed if the old password ***** ***** You can paste the old password. Here is your old password ***** copy --> cob62'swingy
Please note this will not work if the old password ***** *****
In the above command, change the UUID with the alphanumeric characters next to the Logical Volume of external drive.
I can't find the external drive the list. Is it plugged in ?
When it asked for the password ***** you open it, did you try pasting the password ***** of typing ?
I'm really sorry. I'm of ideas on this one. I will opt out and open this question to other experts in here.
As far as I know, once you forgot the password, the files are already gone and the disk has to be erased. But I will open this question to other experts. If they have any idea, they will get back to you. I'm also look for solutions and let you know if I find any.
Please don't rate the answer anything.
Felipe, I've searched many forums and threads but couldn't find any solution. Since it is a network based drive, it is hard to implement any commands via Terminal.
I'm not sure that will work. But try it.