December 2012
Intermediate to advanced
888 pages
48h 24m
English
Content preview from Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition
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The badblocks Command
Although not a performance-tuning program per se, the utility badblocks checks an (preferably) unmounted partition for bad blocks. It is not recommended that you run this command by itself, but rather allow it to be called by fsck. It should be used directly only if you specify the block size accurately; don’t guess or assume anything.
The options available for badblocks are detailed in the man page. They allow for very low-level manipulation of the file system that is useful for data recovery by file system experts or for file system hacking, but they are beyond the scope of this chapter and the average user.
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