Why does it take longer time to safeguard Time Machine's backup disc than to make one in the first place?
Making the first backup copy disc with Time Machine took about 3 hours. The process of safeguarding the backup disc takes considerably longer time. Is there something I can do to increase the speed of that?
Thank you for your help
iMac (21.5-inch, Late 2012), OS X Mountain Lion (10.8.5)
