Hello,
Here is an update:
I bought a 3TB external HD and backed up my 238GB imac hard drive using Time Machine. Then dragged the old backup Time Machine files to the trash from the original 2TB external I had been using. (This now seems to be the problem-more in a minute) I then started moved the biggest art and photo files, (about 80MB) to this 2TB external which seems to have improved how my mac is running. It isn't freezing anymore or giving me a blinking "?"folder.
BUT, While I was emptying the trash of these giant backup folders, the machine did freeze and when restarted, won't empty them anymore. It runs for a very long time telling me it has over 2 million files to trash, but then gives me an error code #8003 while leaving all those large unwanted backups and any other discards in the trash. I can't use the trash at all unless I first dismount the 2TB external (taking all those big backups with it) and then the trash will work for the discards on my destop.
Initially I had some luck emptying the trash of desktop discards by using a safe boot, but when I realized I could dismount the external and empty the destop discards I stopped doing safe boots.
So my problem now seems to be how to get rid of old Time Machine backups on the external. I would like to free up that 1TB of space for storing the big art and photos files I still want to move.
I'm wondering there was a proper way to get rid of old Time Machine backups that I messed up by trying to drag and drop in the trash and then they got orphaned or something when by machine froze.
Thanks for any help.
Brad
PS. When I followed your advice about disk utility repairs, it said their weren't any problems.