Hi there,
By mistake (big one) I partitioned / formatted a hard drive with all my clients jobs ( Final Cut projects, footage, etc.). The drive is a Samsung 1.5TB and I'm running Mac OS 10.5.8 and tried to use TestDisk as a way to recover my lost partition. Testdisk always warn me that it can not have access to write to the drive, even when I'm logged as root. Tried to find the hard disk manual as it could be a jumper issue as sugested by testdisk tips but couldn't find any help. Testdisk can find the deleted partition but can not write to the drive... "write error".
any ideas?
Thanks in advance for any help, I'm in the countryside of Brazil and don't have any data rescue professionals arround.

R-Studio from r-tt.com can recover an HFS+ partition to another disk. If all you need is the data, then this is the way to go. If you want to repair the partition, it's not.