I have got 1 year old 5 Journaled HFS+ partitions in my Samsung 300 GB hard disk in firewire external enclosure. There're very important single copy office files in these Apple partition map. Last day, I selected the fourth partition which capacity is 56GB, and choose 'Erase' with as a disk type 'MS-DOS File System' with Mac OS 10.4.11. But Disk Utility failed in 50 seconds, and gives an error. Then all my 5 HFS+ (Journaled) partitions stopped mounting and is not even recognized by Disk Utility which says no partition map found, and drive is unformatted. Disk Utility shows only disk name.

I think my apple partition map table corrupted by Disk Utility. All my data still in hard disk, but I don't know how can I mount them again. Disk Utility's verify and repairs buttons doesn't appear for Samsung HDD in Tiger & Leopard. I used Data Rescue II-1.2, DiskWarrior 4.1, and Drive Genius 2.0.2 applications for repair my hard disk and partitions. But all of them are failed.

Please, could you help me for mounting my 5 partitions in my hard disk. How can I have got my all data again?



Disk Utility gives this information for my Samsung Hard Disk;
Name : Initio
Type : Disk
Partition Map Scheme : Unformatted
Disk Identifier : disk1
Media Name : Initio HD300LD Media
Media Type : Generic
Connection Bus : FireWire
Connection ID : 4521213288251392
Device Tree : fw/node@10100500000000/sbp-2@4008/@0:0
Writable : Yes
Ejectable : Yes
Mac OS 9 Drivers Installed : No
Location : External
Total Capacity : 279,5 GB (300.069.052.416 Bytes)
S.M.A.R.T. Status : Not Supported
Disk Number : 1
Partition Number : 0


Hardwares:
SAMSUNG HD300LD
300GB/7200RPM/8M/PATA
Rev.A, LBA 586, 072.368 300.0GB T133
Mac OS X 10.4.11, Build 8S165
Mac OS X 10.5.2, Build 9C31
eMac 700 MHz, PPC G4, 768mb sdram, 200 GB ATA WD HDD HFS, 500GB FW My Book HFS+, 300GB FW Seagate HFS+, 300GB Samsung HFS+