I'm using shred on some 2Tb USB disk drive that I plan to give away. So far it has taken 8 hours to shred 50% of the drive, which implies that it will take about 16 hours to shred the whole drive. I have another 2 drives to go.

Is there a quicker way to protect my data when I give the drives away, other than smashing the drives to bits?

Thanks - jon