Here is the setup - 1-external firewire 300 gig - drive letter =G 2 -an old internal drive 7 gig (used to be drive C - was a backup drive for files) - taken out. 3- Internal 120 gig Drive - running Xp Pro - Drive Letter = F The old 7 gig drive was removed - and in it's place I put a 300 gig internal drive. I formatted the drive - windows found it in my computer - at like 267 gigs formatted. I used Acronis to clone the 120 internal - "F"....onto the new 300 gig internal. I then wanted to clear out the 120 to use as my secondary drive for storing files etc.... and run the 300 internal as my main operating system drive. Well, the clone went fine - no errors or problems. I wiped the 300 gig using acronis and it was fine. I went into the bios - and it sees all 3 drives - and it's set to auto detect. All three drives show properly. in the boot menu - the primary option is external - set to disabled (300 gig) secondary boot option - ide internal - I set to the 300 gig internal 3rd etc - cd option and disabled further. If I boot in this configuration - the drive boots fine, files seem fine, yet I got into My Computer and it only sees 1 Drive. - "F" - the 300 gig internal. If I go into device manager - it sees all 3 drives correctly. - No errors. If I go into Disk Management of XP pro - it shows all 3 drives... C,F,G. But it won't show in my computer. as seen in disk management F- 300 gig internal C- 120 gig internal G- 300 External If I go into the boot menu of the bios and set it up this way - primary option is external - set to disabled (300 gig) secondary boot option - ide internal - I set it to the old original 120 gig "F" 3rd -4th cd etc - disabled. It boots fine - everything good - shows all 3 drives in my computer. Shows all 3 in disk management, but it's obviously booting off the old 120 drive. It's not running off the new 300. Disk management has labed the drives now as this - C - 300 gig new F- 120 original G-300 external It's like it's labled whatever boot drive is running "F" - yet it won't show all the drives if I try to boot off the clone (new 300 gig) in my computer. yet they show in disk management fine. I just want the 300 internal to be the boot device and work properly with all drives showing in my computer. Then I can obviously wipe the 120 clean and use it as storage. I'm not sure what is going on, or what the problem is here. Help?