Migrating MyISAM tables from 5.5 => 5.6
MyISAM didn't change between 5.5 and 5.6. It's not being developed, and it's virtually stagnant.

Use FLUSH TABLES WITH READ LOCK and then it's safe to copy the MyISAM tables. This is mentioned in https://dev.mysql.com/doc/refman/5.6/en/backup-methods.html

Other solutions:


mysqldump --tab outputs tab-delimited data files instead of SQL, so it's much faster to import with mysqlimport.
mysqlhotcopy does a physical copy of MyISAM tables (it doesn't work for InnoDB tables). But be careful because mysqlhotcopy is on the chopping block for deprecation.
mydumper, which dumps to SQL, but it supports compression and multi-threaded execution for both dump and restore. Unfortunately it does not support an option like --tab.