It depends on the method you are using to connect the two computers and the amount of data to be transferred. Wi-Fi could easily take a day, or days. Ethernet could take the better part of a day. Gigabit Ethernet will be fastest but it could still take a few hours.
This site contains user submitted content, comments and opinions and is for informational purposes only.
Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site.