Move your profile to the preferred disk drive, then modify profiles.ini to tell Thunderbird where to find it.

https://support.mozilla.org/en-US/kb/profiles-tb

What precisely did you do when you "installed Thunderbird on normal hard drive D:"?

The executable (etc) and the data store are separate; the location of one doesn't necessarily affect the other.

Zenos said

Move your profile to the preferred disk drive, then modify profiles.ini to tell Thunderbird where to find it. https://support.mozilla.org/en-US/kb/profiles-tb What precisely did you do when you "installed Thunderbird on normal hard drive D:"? The executable (etc) and the data store are separate; the location of one doesn't necessarily affect the other.

>What precisely did you do when you "installed Thunderbird on normal hard drive D:"?

As with most programs that ask you to confirm the path they are about to install to, I simply changed the c:\blahblah to become D:\blahblah and then hit next, continue, or what ever the install program's proceed button is.

The move directions in the link you gave don't appear to be strictly correct. The path on my Win 8.1 laptop to find Profiles.ini includes "roaming", as in \appdata\roaming\Thunderbird\

In any case I copied the contents of the path to the D: drive , changed isRelative to = 0 and renamed the .default profile on the C: drive. Thunderbird still works so I'm assuming it has been moved correctly.

Thank you.

BobbyAlreadytaken said

Zenos said

Move your profile to the preferred disk drive, then modify profiles.ini to tell Thunderbird where to find it. https://support.mozilla.org/en-US/kb/profiles-tb What precisely did you do when you "installed Thunderbird on normal hard drive D:"? The executable (etc) and the data store are separate; the location of one doesn't necessarily affect the other.

>What precisely did you do when you "installed Thunderbird on normal hard drive D:"?

As with most programs that ask you to confirm the path they are about to install to, I simply changed the c:\blahblah to become D:\blahblah and then hit next, continue, or what ever the install program's proceed button is.

OK, so that would have installed the executable (program) on the designated drive. The data store would still have gone to wherever your AppData is. On the face of it, it would seem sensible to put executables on the SSD for speed of loading, and AppData etc on the HDD where read/write cycles are better tolerated by the hardware.

I would expect Windows to offer an option to set the preferred drive for the Users folder, which incorporates the AppData folders.

BobbyAlreadytaken said

The move directions in the link you gave don't appear to be strictly correct. The path on my Win 8.1 laptop to find Profiles.ini includes "roaming", as in \appdata\roaming\Thunderbird\ In any case I copied the contents of the path to the D: drive , changed isRelative to = 0 and renamed the .default profile on the C: drive. Thunderbird still works so I'm assuming it has been moved correctly. Thank you.

That sounds just about perfect. ;-)