Hi, I have a PowerMac G5 (Quad) with two Seagate drives (ST2000DM001) in RAID-0. So, I've around 4 TB... The only problem is that when I turn off the G5 and wait before restarting it, it won't find the OS. I need to use the alt key to show all the boot volume (I'll see both partitions which form the RAID volume). Well, I've reset the PRAM and I'm thinking that maybe the battery is almost dead so it can't maintains the default boot drive. But, it doesn't seem that I lost the time too, so I'm unsure. Plus, with or without the default boot drive, it should be able to find that the RAID volume is the ONLY bootable partition and boot on it... Else, the ASD don't find any major problems.