Following the advice to merge all my lightroom catalogues, the first obstacle is in the pictures saved in different hard drives. Some on Promise, when it had a catastrophic fail, I started backing up the pictures with other hard drives and sometimes using them when I’m not at the desk. So the pictures imported were on one external drive, not copied to the promise drive and later on the eastystore 12 TB drive. My goodness, the file management is a big headache. This is all due to the small disk that came with the MacBook pro and my old Mac Pro. You have to be in constant battle between disk space and ports management. sigh.
So I got the Sync Folders Pro for the mac and now in the middle of syncing all the drives before I can merge the lightroom catalogues and straighten out the missing pictures in the lightroom. What a pain! This is going to be a long term project I think. But hopefully I only need to do it once and no more problems if I keep the hard drives in sync.
Right now, I have four places for my pictures. The promise drive with 10 TB, the easystore 12 TB drive, a LaCie drive with 4 TB and the newest samsung T7 Shield 4 TB drive. I am planning on using the Samsung drive for importing pictures and then sync it to the rest of the 3 drives. 2 portable and 2 stationery.