I recently bought an external, bus powered 40 GB FW/USB2.0 HD. It was pre-formatted when I bought it and claimed to work on both Mac and Windows. Initially, it was giving me little troubles working with my PB 12" so I have since then re-formatted the drive in Mac Extended (HFS+) format. Questions: 1) Since it's in Mac format, it probably won't work with Windows anymore? 2) If I wanted it to work on both PC and Mac, how should I format it? (Format it to FAT32 using Windows? Any other "mutually compatible" formats? I hear Macs can't recognize the Windows NT format.. Can't remember what it's called...) 3) I imagine that the case is Mac being able to read PC formatted disk and NOT that there's a mutually compatible format, right? 4) Can I partition the drive so half will work with Windows and the other half, with Mac? If so, what to use to format the disk? 5) Unrelated: What do I need to do in order to install Jag on the HD so I can boot off of it, if necessary? Any help is appreciated. Thanks!