Time Machine says not enough space on NEW drive?

Not surprising, TimeMachine backups should be 3-5 times larger than the content's of the drive that you're trying to back up.

See: https://apple.stackexchange.com/questions/100780/how-big-should-my-time-machine- backup-drive-be

http://lmgtfy.com/?q=time+machine+drive+size

Hello meegwell,

But you have setup the new drive differently. You copied your old backups onto it.

If you just erase the new backup drive and start fresh, it should run fine. I'm sure you will eventually have problems. Pretty much everyone with a backup drive that is too small eventually has problems. But you can easily fix them by erasing the backup drive. You can continue to use the old backup drive with Time Machine, although you might have to erase that too.

Just make sure to schedule those drive erasures so that you always have at one backup available.

but you assumed you knew my complete experience.

My guess was pretty accurate then.

If your drive is 95% full, then that would be your problem. Your new drive is not big enough.

Start with C4 in the linked article.

http://oldtoad.net/pondini.org/TM/Troubleshooting.html

There may be a checkbox on the warning message to ignore all future messages. So, maybe you checked it on your old drive.

R