Installing Monterey on Imac with password on harddisk

Hi

I have an Imac from 2015, which I have reset, and installed El Capitan. During the installation process I had to put a password on the harddisks, it was not possible not to enter a password.

Before reset I could run Monterey, so I want to install that.

I have to find it via appstore, it can not be done by update.

I can download it, but not install, because of the password on the harddisk.

What shall I do?

iMac 27″, macOS 15.4

Posted on May 15, 2025 04:01 AM

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11 replies

May 25, 2025 10:49 AM in response to pernille289

pernille289 wrote:

When I reset the Imac, and installed El Capitan afterwards, via the internet, Is was asked to make a harddisk password, and made one. I tried to repeat the process, but it was not possible to go through with the process, without making a password.

We still have no idea what this password could be. Obviously you can log into your Mac if you can check the user accounts access level. As for a password during the install process, the only two possibilities left are a Filevault password which is usually tied directly to the macOS user account so the admin user password should work. The only other possibility is a firmware password lock which would present itself as a padlock on the screen while booting. @Owl-53 provided a link to an Apple article regarding that possibility.


I think you need to take a picture or screenshot of the screen when this occurs. Perhaps that will help us.


Plus at what point during the install process does this password prompt occur?


Are you running the installer while booted into macOS El Capitan?


May 16, 2025 01:08 AM in response to pernille289

Did to Set a Firmware Password on the Disk ?


Set a firmware password on your Mac



Have you forgotten the User Account Password after installing El Capitan ?


Intel Computer


Shutdown the computer 


Restart computer and immediately hold the two keyboard combo Command  r 


If using a Bluetooth Keyboard with Rechargeable Battery - Cable the Keyboard to computer for this unique purpose. Bluetooth Kernel may not load soon enough to execute the 2 keyboard commands 


Top Tool Bar >> Utilities >> Terminal


Type resetpassword as one word and no spaces


Press Return key


Follow the prompts and remember the New Password

May 26, 2025 04:56 AM in response to HWTech

@HWTech 😎


Not sure if this is relevant but . . .


User Byline iMac 27″, macOS 15.4


Quaifies for Sequoia


  • iMac (Retina 5K, 27-inch, 2020)
  • iMac (Retina 5K, 27-inch, 2019)



Last Resort 🤞


Thanks to a respected contributor @leroydouglas


if in doubt about admin from your logged in user account,  from Terminal.app copy and paste —


dscacheutil -q group -a name admin

May 17, 2025 05:41 PM in response to pernille289

The only two passwords I know of are the macOS admin user account password and a Filevault password if you turned on Filevault to encrypt the drive. Normally macOS does some behind the scenes "magic" so you only need to use your macOS admin login password to unlock Filevault & to log into your user account.


Installing a macOS upgrade should just install if you are going from an old OS to a newer OS especially if you are running the Monterey installer while booted to the internal macOS boot drive normally even if Filevault is enabled.


Is your macOS user account one with "admin" privileges? If not, then that is the problem and the question becomes how did it lose its admin privileges?


If you are upgrading the OS by booting into Internet Recovery Mode (Command + Option + R), or from a bootable macOS Monterey USB stick, then if Filevault is enabled on the internal drive you may first need to launch Disk Utility to unlock & mount the internal drive before you can install Monterey to it.



May 18, 2025 09:30 AM in response to pernille289

pernille289 wrote:

The account should have admin privileges.

You need to confirm it by checking the Users & Groups System Settings. Your macOS user account is either an "admin" or it is a "standard" account.


and I had to set a password for the harddisks, I tried it again, so see if it was possible not to set one, but it was not.

Exactly what "password for the harddisks"? Please explain how you did this since I don't know what you mean by it.


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Installing Monterey on Imac with password on harddisk

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