How can i sync a folder to my external harddrive?

[morrisman1]

i have 10.5.3 and i want to sync my music folder to my external harddrive so that when i tell it to, it will update the external harddrive to have the same contents as the internal harddrive (for the particular folder)

i have thought about using automator but im not completely familiar with it to make something that is reliable and i can trust.

TIA for you help

 

[morrisman1]

bumping it

to the top

 

[rhett7660]

It isn't free, but I use cronosync. Works like a charm. I use for back up purposes etc.