I am about to upgrade my mid-2012 MackBook Pro with a 500 GB SSD, and use the current HDD as external storage by placing it in an appropriate case that would allow me to connect it through USB later.
Rather than backing up my whole system and data, I thought I would just do the SSD upgrade, and hookup the external hard disk later and copy over my files and projects as I need them (one of the reasons I am considering this is that I have lots of files that I may not need now, but that might be useful to keep for the future... sort of hoarding but that's just how it is...rather be careful than sorry).
my question, is there anything I should consider, before converting my current HD to external? Like file system config or something? Is it really this easy as I am picturing it or should I really think ahead of time and plan for failures to access my HD as external drive, for example, for not having read/write rights or privileges.
EDIT: In the current HDD, I only have one partition used both for OS and Data.