calendar events missing

If you backed up before the install, you should be able to restore from the backup.

With Time Machine you can go "back in time" to restore files, versions of files, or your entire system. Make sure your backup drive is connected and mounted (if not, Time Machine will alert you that "Your Time Machine backup disk can't be found."

If prompted, enter an administrator name and password to proceed with the restore.

Restoring specific files or folders

Choose Enter Time Machine from the Time Machine menu and the restore interface appears. You can literally see your windows as they appeared "back in time."

You can use the timeline on the right side of the window to reach a certain point back in time (the timeline shows the times of all backups on your backup drive). If you don’t know exactly when you deleted or changed a file, you can use the back arrow to let Time Machine automatically travel through time to show you when that folder last changed.

Note: Dates in pink indicate the data resides on your Time Machine backup device. Dates in white indicate the data resides on your Mac. In OS X Lion, portable Macs have the feature of local snapshots. See this article for details.

You can also perform a Spotlight search in the Time Machine Finder Window search field to find a file. Simply type the Spotlight search field and use the back arrow to have Time Machine search through your backups to find what you are looking for.

Before you restore a file, you can also use Quick Look to preview a file to make sure its the one you want. Highlight the file and press the Space Bar to bring up a quick look.

To restore, select the file/folder and click the "Restore" button. The file will automatically be copied to the desktop or appropriate folder. If the file you are restoring has another file in the same location with the same name, you will be prompted to choose which file to keep or keep both.

I had this problem too. Go to Icloud settings in system prefs and ensure Calendars & Reminders has been ticked. Once I did this all my Calendars returned.

Drew

Drew,

Thanks for the tip. Easy solution.

Apple ID Casy, please post back and let us know if drew's suggestion worked.

It is tcked, but it does no good - calendar stuff still is 100% gone 😠

Once in time machine, navigate to your application folder and select iCal. Then on the timeline to the right go back to before the update and select restore

I had the same problem - my calendar events disappeared with the upgrade. However, I upgraded from Snow Leopard and I can't restore from iCal to Calendar. Any suggestions? Thanks!

You don't want to restore the application, you want the data.

See Time Machine - Frequently Asked Question #28

Apple ID Casey wrote:

. . .

i still cant find the data.

See Time Machine - Frequently Asked Question #28

I restored the Calendar data from Time Machine as indicated from Pondini's link.... but not all of the events were actually restored. I've tried restoring from a couple of different backups (including the most recent backup right before I installed Mountain Lion), but I'm still missing events!

I haven't been using iCloud on my iPhone. Is there a way to get all of the events from my iPhone to iCloud or to my Calendar on my Mac?

Ah, if you have Calendar syncing via iCloud, that's the problem. 😟

iCloud is the "master" -- even if you restore to your Mac, iCloud will make your Mac agree with the cloud, not the other way around (for Calendars that are on the cloud).

For a workaround, see this discussion thread.

Wow. As much as I like the idea of iCloud for my calendars, I think this is one thing I'll keep track of the old-fashioned way. Thanks for your help!