If the Xbox is softmodded then you don't need to hotswap. Either:
A. Make a copy of the eeprom contents (eeprom.bin), then use that with xboxhdm and Kingroach NDURE 3.1 to build and lock the new disk
B. As above, but use Autobuilder with the eeprom
C. Use Chimp 2618 to upgrade the disk using the Xbox
D. Use HeXEn (Google Heimdall's Xbox Engineering Disc) to upgrade the disk using the Xbox
A and B require a PC with an IDE socket on the motherboard, C and D require an external power source for the second disk (e.g. your PC or an external drive enclosure).
In passing, you're also misunderstanding hotswapping. You have to UNPLUG the drive at precisely the right point, but having done that you can take your time plugging the drive into your PC, so there's no need to panic and bend pins.