FireVault Problem

[Henry V]

FireVault on my iMac Tahoe 26.1 keeps switching off.
I click it on after my password, and within 2 seconds it turns itself back off.
What can i do?

 

[Bigwaff]

There is specific procedure for enabling FileVault. Are you being prompted to choose how you want to unlock your startup disk after you enable FileVault?

Protect data on your Mac with FileVault

Turn on FileVault to add an extra layer of security to the encrypted data on your Mac.

support.apple.com

 

[MayflyMaven]

You may get some more insight by enabling FileVault via the command-line, e.g.:

sudo fdesetup enable -verbose

Might be a Secure Token issue. If you boot into Recovery Mode, are you allowed to select your startup disk and authenticate with your user account, or do you get a dialog to the effect of "there are no authorized users"?

 

[Henry V]

You may get some more insight by enabling FileVault via the command-line, e.g.:

sudo fdesetup enable -verbose

Might be a Secure Token issue. If you boot into Recovery Mode, are you allowed to select your startup disk and authenticate with your user account, or do you get a dialog to the effect of "there are no authorized users"?

tried the code and got to enter password but it said it was wrong.
tried several times.
Makes you want to spit!

 

[Henry V]

There is specific procedure for enabling FileVault. Are you being prompted to choose how you want to unlock your startup disk after you enable FileVault?

Protect data on your Mac with FileVault

Turn on FileVault to add an extra layer of security to the encrypted data on your Mac.

support.apple.com

No - I just click it on.
I enter my password.
It switches on then off again in about 2 seconds.

 

[Henry V]

tried the code and got to enter password but it said it was wrong.
tried several times.
Makes you want to spit!

I just tried again and it said "your FireVault is on"!!
Thank you so much!