Hello, i'm new here...brought to you via Google-Search... Well after many years of using only Seagate Drives, and only one failure...(and that drive went down after being 8 years in constant use...) my ST3500320AS, bought August 2008, went down 10 Jan 09...with the wellknown symptoms...PC works fine, I reboot, the drive is no longer recognised by the BIOS... I made a funny discovery though...I have a second ST3500320AS, which has the SD25 firmware...so I switched the PCBs, and the dead drive was recognised in the BIOS as ST3500320AS with SD25 firmware, i was happy, thought myself very lucky...but Windows,and any other OS btw, said "NO!!!"... and told me the drive has 0GB capacity... Now I am constantly observing the NET for solutions, because I wont give up my data on this Drive... Here are the specs for your list: 9QM5HVYL:ST3500320AS:9BX154-303:SD15:09077:KRATSG:Aug08:10Jan09:D3m3nt0r:Germany