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Two drives. New profile created on "D". Default profile on "C" deleted. After reboot Tbird creates and loads default on "C". How can I use the one on "D"?

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Win 10. New profile file on "D" overwritten with the content from the old PC. Works fine until Tbird reload. Then the new "D" profile is still there but not used and the default profile is created on "C" and used instead of my profile created on "D". I do not want the profile to be on "C" as this is the SSD drive I use for games and it runs out of space.

Win 10. New profile file on "D" overwritten with the content from the old PC. Works fine until Tbird reload. Then the new "D" profile is still there but not used and the default profile is created on "C" and used instead of my profile created on "D". I do not want the profile to be on "C" as this is the SSD drive I use for games and it runs out of space.

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How did you create the profile on D:? "Overwritten" means you copied it from somewhere else?

Thunderbird will always look in the place recommended by Microsoft, i.e. C:\Users\<user>\AppData\Roaming\Thunderbird\

and here it will seek a file named profiles.ini

That file can tell where Thunderbird needs to go for the actual profile data. By default it's in a folder alongside profiles.ini named Profiles.

You can move Profiles wherever you want, and adjust profiles.ini to suit. But I guess you also moved profiles.ini, so Thunderbird starts over as if you didn't have a profile.

The best way to adjust profiles.ini is to start Thunderbird with the profile manager and use it to configure the data location.

You can hand-edit the profiles.ini file ; set IsRelative to false and change the pathname to the full absolute pathname, with backslashes, e.g.

D:\thunderbird\abc123def.default

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Chosen Solution

How did you create the profile on D:? "Overwritten" means you copied it from somewhere else?

Thunderbird will always look in the place recommended by Microsoft, i.e. C:\Users\<user>\AppData\Roaming\Thunderbird\

and here it will seek a file named profiles.ini

That file can tell where Thunderbird needs to go for the actual profile data. By default it's in a folder alongside profiles.ini named Profiles.

You can move Profiles wherever you want, and adjust profiles.ini to suit. But I guess you also moved profiles.ini, so Thunderbird starts over as if you didn't have a profile.

The best way to adjust profiles.ini is to start Thunderbird with the profile manager and use it to configure the data location.

You can hand-edit the profiles.ini file ; set IsRelative to false and change the pathname to the full absolute pathname, with backslashes, e.g.

D:\thunderbird\abc123def.default