I just replaced a hard drive in a MBP with a 250GB Samsung. When I put my Leopard disk in and try to install it doesnt recongnize the disk. So I went into disk utility to format it to HFS and everytime it says "failed, resource busy". I even tried partitioning it to GUID with HFS and the same message appears. Then I did a USB boot to an external hard drive I have with Leopard on it. I opened disk utility once it was completely booted and tried formating the internal HD. Same message. Anyone know why this keeps happening?