Want To Get Rid Of One Profile

[tb]

I am using Firefox 55.0.1 with Linux Mint (64-bit).

Under /home/<username>/.mozilla/firefox I see two profiles:
* febeprof.<username> and
* mwad0hks.default

The first one was created with an add-on called FEBE (Firefox
Environment Backup Extension) when I copied my profile from an Ubuntu
installation and copied it into the Linux Mint one.

The second one is the default profile that came with Linux Mint's
original installation.

Right now Firefox defaults to the febeprof.<username> profile.
Apparently the second profile is simply disregarded.

As an experiment, I copied all the contents from febeprof.<username>
directory into mwad0hks.default and then deleted febeprof.<username>.

I was expecting Firefox to simply start up and use mwad0hks.default as
the new default profile. I was wrong. I got a message saying something
to the effect that Firefox could not start because it was missing some
files. When I restored febeprof.<username>, Firefox started up without
any problems.

What would I need to do in order to tell Firefox to start using
mwad0hks.default as the default profile and disregard febeprof.<username>?

I admit it: I have no valid reason to do that other then wanting to
understand how things work with profile folders in Firefox...
--
tb

[Good Guy]

I don't use Linux so these instructions are for Windows 10:

1) In your profile <C:\Users\<username>\AppData\Roaming\Mozilla\Firefox>  you should have a file called:

profiles.ini

2) Open that file and change the line that says:

Path=Profiles/qetlc2ba.default-1481131968428

3) the only thing you need to change is: qetlc2ba.default (you will have something else here e.g  febeprof.<username>)  to mwad0hks.default

4) That is my profile name but you should use what you want to use.

5) Make sure you have a backup of everything (entire folder) before doing this.

6) Launch FF and it will start using your new profile - the one you changed it to in (2)  and (3)  above.

Hope this helps.

--

With over 500 million devices now running Windows 10, customer satisfaction is higher than any previous version of windows.

[tb]

Thanks! With your help I was able to solve the issue.

This were the initial contents of my profiles.ini file:

[General]
StartWithLastProfile=1

[Profile0]
Name=default
IsRelative=1
Path=mwad0hks.default

[Profile1]
Name=<username>
IsRelative=1
Path=febeprof.<username>
Default=1

And this is how I modified it:

[General]
StartWithLastProfile=1

[Profile0]
Name=default
IsRelative=1
Path=febeprof.<username>

[Profile1]
Name=<username>
IsRelative=1
Path=mwad0hks.default
Default=1

And now Firefox uses mwad0hks.default as my default profile! I think I
could delete everything under "[Profile0]", right? Or at least comment
those four lines out using "#", correct?
--
tb

[Good Guy]

Just rename the profile to something else and after one week you can delete it if there isn't any other problems.  Keep the profile.ini file as it is.  Don't delete anything from it.

Good luck and thanks for posting back.

[VanguardLH]

Run "firefox.exe -P" to run its Profile Manager. You can create and
delete profiles along with selecting which one is the default (to
eliminate prompting on Firefox startup). I suspect if only one profile
is left that it automatically becomes the default.

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles