Hello,
I have bought a new computer and the old one I decided to give my son, I erase all the data but after the boy transferred his data from his old macbook, on the black screen appears message to enter disk password, which i definitely don't remember. Is there some opportunities to make it work again or it is now unuseful piece of metal?
What is the exact model of this computer? You can get this information by entering the system serial number on the check coverage page here (please don't post the serial number on the forum since it is considered personal information):
Check Your Service and Support Coverage - Apple Support
It appears the Mac may have Filevault enabled. If it is a 2018+ model, then you should try using a password for any current macOS user account on that Mac. If a clean install of macOS was not performed, then try using any of your old passwords for any former macOS user accounts that were used on that Mac. If it is a 2018-2020 T2 Intel Mac, then I know that the T2 security chip can get confused and not present a proper list of macOS admin users, or even get the user names & passwords mixed up. I think the M-series Macs may have this problem at times as well (at least the by not presenting valid macOS user names to authenticate).
Read Encryptor5000's posts in this Community thread:
Enter a password to unlock the disk maci… - Apple Community
Regards.
Now, you will need to create a new, different password. It is not possible to recover a password. The link below may be helpful. I suggest that you then write down the new password and save it. That way, you can recover it next time it is needed.
Change or reset the password of a macOS user account - Apple Support
This MacBook Pro 2020
I have tried with different passwords and with one password it began to reload but then again the same black BG with message "Enter a password to unlock the disk "Machintosh HD".
At the local service in Estonia the consultant told me that the only opportunity is to change the disk and if it doesn't work, there is no more computer just a peace of metal. Can't believe that there is no more solutions
Thank you, I have read this article but I suppose my problem is different, because I have full background and have no access to the utility.
I have tried your option too, but after reloading the same window appears and there is no opportunity to press the ? mark
Thank you
Enter a password to unlock the disk Machintosh HD
