Hey guys, since there are alot of people that are willing to buy an external harddrive for backup loader, I wanted to create a thread that lists the harddrives that work perfectly on any cIOS, including cIOSrev12. That means no speed issues, no spindown, drive gets detected every time etc. Post your results here and I'll make sure I'll add them to the top I'll kick off. Drives reported to be working 100% WD MyBook Essentials (1TB, one WBFS partition) : Works great on all cIOS revisions released so far. No slowdowns experienced on rev12. (My recommendation ) Iomega eGo (1TB) : Works great Verbatim SmartDisk External USB HardDrive (500 GB) : Works great. WD Elements External Hard Drive (750 GB, model # WD7500E035-00) : Appears to be working great! WD Elements External Hard Drive (500 GB) : Works great as well, altho the drive is perfect for the Wii, the power supply included is a piece of trash and breaks easily! WD MyPassport (320 GB) : Works great!