First off let me go ahead and say that I have several modernized systems I just like playing around with old comuters. I have a problem with my old pentium III system. This computers IDE speed is ATA66 and my seagate 200GB hard drive is rated to work at ATA133 speeds but i'm only getting max speeds of 37 MB/s. I thought at first that it must be my aging hard drive so I bought an IDE to SATA converter which suprisingly worked very well. I was expecting the old BIOS to not even recognize SATA drives, but that wasn't the case. Anyway I installed a 2.5 inch sataIII hard drive but even with the newer drive my speed was still maxing out at 37 MB/s. So now I know that it's some weird ATA66 bus limitation. ATA66 is supposed to work at 66 MB/s right? I did some research online and I think I may be using the wrong UDMA mode, however there is no option in the BIOS to alter the UDMA mode. I believe i'm supposed to be using UDMA 4 or something like that. Anyway 37 MB/s is unnaceptable. I need a faster drive so is it possible to boot from a PCI ATA133 or possibly a SATA RAID controller with a single drive attached on an old computer. This computer doesn't even support booting from USB which i've learned to bypass using Plopbootmanager.