Upgrade to Mountain Lion.

Posted on Aug 7, 2012 in Blog, DIY Guides

Upgrade to Mountain Lion.

Over the past few weeks we’ve had customers inquire about upgrading their machines to OS X 10.8 Mountain Lion. There are a few known issues that we’d like to share along with some tips & tricks. Keep in mind this is just what we’ve come across so far and there very well may be other issues we haven’t seen yet. In general it’s a good idea to wait to a 10.x.1 or 10.x.2 release before upgrading, especially a remote machine.

*NOTE* Always make a backup before attempting an OS upgrade!
Upgrade Notes:
- Download Mountain Lion from the App Store
- Upgrade can take over 45 minutes
- Do not power cycle machine during upgrade
- VNC window can be left open, it will come back after the upgrade is complete
- Patience is key
- Web sharing is gone – Click here to fix
- Bonjour advertising is re-enabled – Click here on how to disable it

Server Notes:
- Download Server.app from App Store after upgrade
- Make note of share points before upgrade – Info
- DHCP & NAT are no longer included, if you currently use those for VPN you may not want to upgrade
- Work group manager can be found here
- Firewall is no longer in Server.app (ipfw deprecated) PF GUI Management can be found here
- New CLI command called ‘serverinfo’ for querying server details/versions

Fresh Install Notes:
- After a fresh install of Mountain Lion, sharing preferences show remote login and screen sharing enabled (remains of installer). After a reboot they are not.
- Installer won’t accept multiple DNS servers, can be added after installation in Network preferences.
- Overall there seems to be more stability in general with Screen Sharing/VNC.

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