I see in this post (Any way to auto download or sync all Google+ photos to my Mac?) that there's a good solution to bi-directionally syncing photos between my laptop and my Google Photos account (which would also sync photos uploaded from my phone, which occurs automatically). B/c this storage can potentially become a bit large, I'd like to store my Google Photos on a 256GB SDHC card that is always plugged in to my computer. The problem is, it appears I need the Google Photos folder to reside within my Google Drive folder, which is not on this external storage.

Is there a good way to point my local Google Photos folder to external storage without messing up my other Google Drive folders?

I see in this post (Any way to auto download or sync all Google+ photos to my Mac?) that there's a good solution to bi-directionally syncing photos between my laptop and my Google Photos account (which would also sync photos uploaded from my phone, which occurs automatically). B/c this storage can potentially become a bit large, I'd like to store my Google Photos on a 256GB SDHC card that is always plugged in to my computer. The problem is, it appears I need the Google Photos folder to reside within my Google Drive folder, which is not on this external storage.

Is there a good way to point my local Google Photos folder to external storage without messing up my other Google Drive folders?