Wrong section - your question has nothing to do with UnleashX.
Read the link in my signature for a summary of the available softmod hard drive upgrade methods. Which is best for you depends on what tools you have available. Whatever happens, DON'T unlock your original drive, because unlocking tools actually remove the lock, so your Xbox won't boot with that drive. You might need to temporarily remove the lock, but that's different. Also, make sure you take a backup of your eeprom (and note that a copy on your Xbox isn't a backup - you have been warned.)
Which softmod did you use? If it wasn't Krayzie 1.1.1 then you'll need to update the softmod at some point. Work out which hard drive upgrade method you want to use, then we'll be able to tell you how and when to update your softmod.
This post has been edited by Heimdall: May 15 2011, 01:09 AM