Mac Pro Intel Quad 2.8GHz. I have two separate HD. One has 10.5 on it and the other HD has 10.6 on it. I ran out of space on my startup drive that was running 10.6. SO, I had to make more room. What I did was back up my whole system with time machine on an external HD. THen I re-booted my computer in 10.5. From there, I re-partitioned the drive that had 10.6 on it. Now that drive is completely clean. I can't figure out how to get the backup from TM back on my re-partitioned drive. I thought I could open up TM and just "do it" from there, but when I click on the TM icon in my dock, it says "the current time machine back up disk can't be found". SO, I thought I could boot the system from my 10.5 install disk, but it won't let me boot from the disk. It stops at the grey apple screen with no spinning hash wheel. So, as of right now, I am running 10.5 and can't get my system to back up from TM. Any help!!??