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Description: This video is about the top 10 things most people do not know about hard drives that came out of my classes I teach on physical rebuilds of hard drives. I did this speech at Shmoocon 2009 to a packed room. This speech comprises at least 10 things that are 2+2=5 type situations people do not realize about hard drives. For Example, Data is written in Cylinders on hard drives, all partitions are created on Cylinder Boundaries and that leaves an offset from the end of one partition to the next which leaves a gap between partitions that is unusable or free space at the end of the disk. Since the outer edge of a disk starting at Track 0 is the FASTEST location on the drive, and the first partition is created on a cylinder boundary at the outside edge, then each and every partition you create on the disk is further into the disk on a cylinder boundary. This means the second partition is slower than the first partition due to its location on the disk. So for YOU MAC OSX USERS that created a WINDOW partition on your drive, YOU just installed Windows on the SLOWEST part of your hard drive.


The presentation is available here.

Tags: basics ,

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Comments:

• WeeBo on Tue 11 Oct 2011
  
  I know the article is older but wanted to let you know, you have a hell of a lot of good info here. I'll be posting a link to your site from our site liberbyte.com
  Thanks for all the sec videos and others...hdd's for example :)

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