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Upgraded to Mountain Lion yesterday. Time Machine backups continue to run without any reported errors. (Backups are to a HD shared by a Lion Server on the network).

Problem is When I choose Enter Time Machine (or double-click on the Time Machine application icon) nothing happens. No window. No error. No...nothing. I do notice that the remote HD mounts in the Finder... but that's it.

I've reviewed a similar question which appears to be Lion (or perhaps Snow Leopard) related. But this is not acceptable as I don't want to erase my whole backup and start I can't afford to toss my only Lion backup.

Anyone know what's up? And how to get my TM working properly under MLion?

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Open /Applications/Utilities/ and see if there are any relevant messages there. – jtbandes Jul 26 '12 at 21:41
Nothing. not a peep in the logs related to TM – Meltemi Jul 26 '12 at 22:18
hm.. same thing. didn't notice until read your question – Dmitry Evseev Jul 26 '12 at 23:19
Is this error still troubling you? – bmike Apr 18 '13 at 11:28

3 Answers 3

up vote 0 down vote accepted

I had to reformat the external drive I use for Time Machine. It said there was a permissions problem, that it was Read Only - which it wasn't, and a look at the Info for it confirmed it was Read & Write. Still, I just erased the drive and started again. Works fine now.

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I'd rather not have to erase the entire backup if at all possible... – Meltemi Sep 19 '12 at 23:16
I ended up buying another drive, effectively reformatting, and starting anew. – Meltemi Apr 18 '13 at 16:43

Have you tried going to Time Machine preferences and removing that drive from the list of backup drives? Try that, then re-add it. If that doesn't work, subtract it again, look at it in Disk Utility, perhaps rename it to something else, verify and repair the volume, eject then remount it, add to Time Machine backup list, attempt to enter TM again. If no luck, subtract, rename to the original name, re-add to backup list.

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While in opened time machine, press Shift-Command-C it will make TM clickable. Apple is too busy to change sizes of iPhones, iPads to call it a new version and they forget of about their softwares.

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