Lost all pictures, music files and documents after update. Can I restore?

They wil still be on your backup disc that you made before you installed Mavericks. You do backup your important data, don't you? By rights an update should not touch your personal files. Did you update from 10.9 or from 10.9.1 ?

Pete

See if this information helps:

http://support.apple.com/kb/TS5292

MtD

Meg The Dog wrote:

See if this information helps:

http://support.apple.com/kb/TS5292

MtD

Yea! They made a support document for it.