I would set it up in another environment first, a test domain, a local website, something that functions more like your production site, than a subfolder.

You should check out the Upgrade steps in the Wiki (under the resources tab here)

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Chris Hammond
Former DNN Corp Employee, MVP, Core Team Member, Trustee
Christoc.com Software Solutions DotNetNuke Module Development, Upgrades and consulting.
dnnCHAT.com a chat room for DotNetNuke discussions

An upgrade happens in 2 steps:

1. You copy the new files over the old ones. That could happen in a subfolder.

2. DNN discovers a new version and makes changes to the database.



So, besides another folder, you would also need a copy of your database.



If you want to test an upgrade, you would want a setup that resembles your live site as closely as possible.Although I have locally a number od DNN instances running under (localhost), I always test upgrades under the URL of my hostin portal, after having redirected the IP to the loopback IP (127.0.0.1) in the %windir%\system32\drivers/etc/hosts file on a local copy of the life website.



Since you cannot do that on your mac, copying all files to a sub folder might work as a way to backup your file system. But you will also need to backup your database (and make sure you can restore before you start the test, sometimes DB owners do not have restore permission).



When you are sure of your backup/restore procedures, make the upgrade without the testing. If anything goes wrong, putting back the file system and restoring the database should get you out of trouble.

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The one-eyed in the land of the blind.