If you don't have a serial number yet, you can download the full installer from the official site. It will function as a before requiring a serial number for activation. MacDrive 10 Standard Support
Depending on how you purchased the software, your serial number can be found in a few specific locations: macdrive 10 serial number link
Many sites offering cracked serials or "keygens" are fronts for malware and phishing. Activation Failures: If you don't have a serial number yet,
: You can download and use the full version of MacDrive for 5 days without a serial number to test features. Upgrade Qualification macdrive 10 serial number link