Hi all, I've got a 1TB external drive connected via USB to my 1TB iMac, which I use for Time Machine. I have 93.9 GB left on the internal disk. But when Time Machine goes to make a backup, it informs me that it does not have enough space to make a backup regardless of the fact that the drive is empty and used solely for Time Machine. It is my understanding that Time Machine needs a little extra space on the disk for organizational purposes, but it doesn't seem like it should need over 90 GB! I've tried erasing and reformatting the disk in Disk Utility, but still no luck. I'd also found that prior to reformatting, Time Machine would not delete old backups from the disk. Any help would be greatly appreciated. Thanks again.