I just got back from my apple store with a new Lacie external hard drive. I want to partition the hardrive into 3 sections. I have questions!!... A) If i choose I want another partition, is it easy to add another? B) Can I use one partition on a PC whilst the other 2 on Macs? C) If i want to delete partitions at a later date, am i able to delete one partition saving the others?