Invaluable!! My initial Leopard installs somehow managed to corrupt 2 of my USB drives (my suspicions are from some random crashes during activity and possibly the reboot/shutdown issues???)
switched back to 4.9 to find that Disk utility seemed to make the problem worse and I started to face the fact that I'd lost a lot of Data (and a piece of my soul).
Thank god for DW!! It succesfully managed to restore all the corrupted and shifted directories whilst also subtely reminding me of that age old ritual of backing up.

Highly recommend this bit o kit and a spindle of blanks.

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My Hackintosh:
Kalyway 10.5.2 Intel/Amd -- Speedstep, Netkas Smbios, AMD test patch 2.
Mobo: MSI K9AGM2
Chipset: AMD 690v ATISB600 -- SB600ATA kexts
CPU: 3Ghz AMD Athlon 64x2 6000+
Ram: 2gb Rambo DDRii 667
Graphics: Nvidea MSI nx8600GT 512MB -- NvInject 512 (fully supported 100% working)
Audio~External: Focusrite Saffire -- (100% working - ootb)
Ethernet: 8101E -- Realtek R1000 (100% working)
HDD: 320GB WD SataII (150gb Boot Partition)
150gb Lacie Firewire/USB RIP my dear Lacie.