Motorola Included a Root Check in the RAZR, RAZR MAXX, and DROID4 With Ice Cream Sandwich
See that little "qe 1/1" listed on the screenshot above of my DROID RAZR booted into recovery? According to @P3Droid and a variety of testers, this is a root checker of sorts that Motorola has built into the boot and recovery .img files of their current crop...