Barbecued wrote:
anyone can answer
There is no reason to remove the guest user here. None.
macOS upgrades just fine with a guest user present; that’s the standard install.
If there are issues with performing the upgrade, what are those? Specific details and error messages help.
If you’ve forgotten your login user password, that can be reset.
If your login user password is remembered but is no longer working, that usually means your Mac is corrupted.
That can be a software corruption, or can be a hardware-caused corruption due to a failing hard disk drive for instance.
Whatever directions you might be following (and that are suggesting removing the guest user as part of an upgrade) are either wrong, or being misunderstood.
So… rather than asking about a step irrelevant to upgrades—removing the guest user—what’s going on here?