I have read some notes about this topic and i have understood that if i would like to upgrade from LR2 to LR5 i would still need the S/N of the LR2, so i have a follow up question:
I have LR2 since looong time and i have no idea where the box nor CD is ... can i rescue the S/N from the current LR installation and use it to complete the upgrade?
If yes, where and how do i do this ?
Thank you in Advanced
If you're running Windows, you can extract the serial number for future reference using
But, as Jim says, if Lightroom 2 is already installed with a valid serial number, the Lightroom 5 installer will find it and not prompt you for the LR2 serial number.
However, if you ever want to re-install Lightroom on a new computer, you're going to need that LR2 serial number at some point.