current community chat blog Super User Meta Super User Sign up or log in to customize your list. more stack exchange communities Stack Exchange sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site Super User Questions Tags Users Badges Unanswered Ask Question Take the 2-minute tour × Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required. Good block size for disk cloning with diskdump (dd) up vote 22 down vote favorite 13 I use dd in its simplest form to clone a hard drive dd if=INPUT of=OUTPUT However, I read in the manpage that dd knows a blocksize para...