Please note that these are discontinued tools primarily intended for legacy Windows systems (NT, 2000, XP). Modern Windows versions (Vista and later) generally require modern alternatives like WinDbg .
Unlike the infamous BSOD, SoftIce would hijack the system and drop into its own full-screen command-line interface (often invoked by Ctrl+D). From there, you could inspect registers, disassemble code, modify memory, and single-step through kernel code. Compuware DriverStudio 3.2 incl. SoftIce 4.3.2
The loader utility allowed you to start SoftIce automatically during boot, making it possible to debug early-boot drivers—a task that remains challenging even today. Please note that these are discontinued tools primarily
While intended for legitimate driver development, SoftICE's power made it the gold standard for the software cracking and reverse engineering you could inspect registers