MPC storage

can the mpc read and copy files from the sd to cf in the same time?

even then, no you can't. mpc can only access one drive at a time.
on mine, which has multiple slots, i have to remove the cf card before i can read the sd card.

i ask you again - why jump through these hoops? why not just get an mpc w card reader like a 1000 or 2500?

is there any dangerous if i want to upgrade my mpc to a mcd hot swappable on 1.4 os with 8 gb card or 4gb??