SHADOUFA

I RUN A P.O.S SOFTWARE IT'S PROTECTION IS BASED ON THE "SERIAL NO. OF THE HARD DISK " IN WHICH IT IS INSTALLED . I REACHED SOME HELPFUL INFORMATION AS HOW TO BREAK IT , YET THE REST IS DIFFICULT FOR ME TO BREAK. EXAMPLE 1: WHEN DISK SERIAL NO. IS (2464-D62F) THE CIPHER FILE WAS (2464-D62F-OEM-1981419) EXAMPLE 2: DISK SERIAL 0430-CCCA THE CIPHER 0430-CCCA-OEM-10161512 PLEASE HELP FIND OUT THE WAY TO PREDICT THE CIPHER FOR A DISK SERIAL 1835-3E73