Editing FileVault (section)

==Versions and key features==
FileVault was introduced with [[Mac OS X Panther|Mac OS X 10.3 Panther]],<ref>{{cite web | url=https://www.apple.com/newsroom/2003/06/23Apple-Previews-Mac-OS-X-Panther/ | title=Apple Previews Mac OS X "Panther" | publisher=Apple | work=Apple Press Info | date=June 23, 2003 | access-date=January 21, 2013}}</ref> and could only be applied to a user's home directory, not the startup volume. The [[operating system]] uses an encrypted [[sparse disk image]] (a large single file) to present a volume for the home directory. [[Mac OS X Leopard|Mac OS X 10.5 Leopard]] and [[Mac OS X Snow Leopard|Mac OS X 10.6 Snow Leopard]] use more modern [[Sparse image#Sparse bundle|sparse bundle disk images]]<ref>{{cite web | url=http://macosx.com/forums/articles/296196-live-filevault-sparse-bundle-backups-leopard.html | title=Live FileVault and Sparse Bundle Backups in Leopard | website=macosx.com | date=November 5, 2007 | access-date=January 21, 2013 | author=ScottW | archive-url=https://web.archive.org/web/20131029200702/http://macosx.com/forums/articles/296196-live-filevault-sparse-bundle-backups-leopard.html | archive-date=October 29, 2013 | url-status=dead }}</ref> which spread the data over 8 MB files (called ''bands'') within a bundle. Apple refers to this original iteration of FileVault as "legacy FileVault".<ref name=aboutfv2 />

[[OS X Lion|OS X 10.7 Lion]] and newer versions offer '''FileVault 2''',<ref name=aboutfv2>{{cite web|title=OS X: About FileVault 2|url=http://support.apple.com/kb/HT4790|publisher=Apple Inc|access-date=September 5, 2012|author=Apple Inc |date=August 9, 2012|archive-url=https://web.archive.org/web/20141029195559/http://support.apple.com/kb/HT4790|archive-date=2014-10-29}}</ref> which is a significant redesign. This encrypts the entire OS X startup volume and typically includes the home directory, abandoning the disk image approach. For this approach to [[disk encryption]], authorised users' information is loaded from a separate non-encrypted [[boot volume]]<ref>{{cite web|title=Best Practices for Deploying FileVault 2|url=http://training.apple.com/pdf/WP_FileVault2.pdf|publisher=Apple Inc|access-date=September 5, 2012|author=Apple Inc|page=40|date=August 17, 2012|archive-url=https://web.archive.org/web/20170822164742/http://training.apple.com/pdf/WP_FileVault2.pdf|archive-date=August 22, 2017|url-status=dead}}</ref> (partition/slice type Apple_Boot).