Microsoft Details HDD Data Migration ProcessThe larger hard drive can be purchased individually or as part of the Elite 360 package due to begin retailing in US stores this weekend. The 120GB HDD comes bundled with a migration kit and simple instructions for transferring saved data from 20GB HDDs. However, those who want to upgrade their 360s to the Elite system will have to order a migration kit from Xbox.com, free of charge, to carry out the data transfer. It has been reported that migration from the smaller HDD will wipe out any saved data on the 120GB hard drive so those upgrading are advised to carry out the process as soon as they purchase their Elite. A demonstration of the process can be viewed over at Major Nelson’s blog.