Installing macOS Monterey

sophivar wrote:

Hello!

I have a 2015 MacBook Pro with a new battery and disk. It's currently running Catalina 10.15.1 and I'm hoping to install Monterey. When I reach the step in the image below, this problem pops up and Im not sure what to do. I tried quitting the installation program and also restarting the laptop. If anyone has any advice, would be much appreciated!

Thanks,

Sophie

https://discussions.apple.com/content/attachment/9a574e69-71f8-4657-a877-830290876309

You have to wait for the File vault encryption to complete...

How to upgrade to macOS Monterey

How to upgrade to macOS Monterey - Apple Support

macOS Monterey hardware requirements—

macOS Monterey - Apple

iMac late 2015 and later

iMac Pro 2017 and later

MacBook Air early 2015 and later

MacBook Pro early 2015 and later

Mac Pro late 2013 and later

Mac mini late 2014 and later

MacBook early 2016 and later

sophivar wrote:

Ok, how long is that supposed to take though?

The answer to that depends greatly on how much data is being encrypted, and how fast your storage I/O is.

System Preferences > Security & Privacy > FileVault should have a progress indicator. There've been reports that display is sometimes also not entirely accurate.

As for the usual duration, a day is not unheard of, particularly with lots of data and slow storage and a slow processor.

changing the state of encrypted/decrypted takes under a minute. Once changed, your drive reads in groups of data and writes them back out in the other state. This process must run to completion, and can not be canceled.

MacOS can be very clever about a lot of things with the drive partially encrypted, but installing a new version of MacOS during the conversion is not possible.

The process continues in the background, ONLY during the times your Mac is awake and not extremely busy doing other tasks. If it sleeps all night, no progress on conversion will be made while it is asleep.

Hopefully it should complete soon.

Also, be sure to have your Mac plugged in to power the entire time. FileVault encryption is paused when your Mac is running on battery power.