delete rom slot 1
I have had issues with HD installing in slot 1, I am not sure why but slot 2 or 3 have worked much better for me when installing Hyperdrive. I would suggest trying this and see if it works for you as well.
Hope this helps!
Currently using RLS15 and Latest Safestrap version on MJ7 Base in STOCK for call recording and touchwiz!\Rom Slot 3 Running FoxHound for Better battery life!
Razr maxx also supporting hashcode running SS 3.11 and RLS7 slot 1 with