Only answer: option key, no other solution. I noticed one of the drives was running a lot so I checked its status in Time Machine. Is this correct, and if not what should I do to set it to overwrite as I can't see any settings in the preferences that relate to overwriting If that would happen to me, I would manually delete oldest backups. It just seemed to take a long time for the backups to be browseable. You can even recover deleted files if you accidentally lose them. Overkill I suppose but I don't store anything in the 'cloud' so it gives me piece of mind.
This is the folder that contains all the Time Machine backups from that specific Mac. Each clone requires its own drive or partitioned volume. I've written to SuperDuper to see how this might be done. The limitation of the simpler app is that it only goes back 48 hours as a maximum, that might already exclude the time period when the problem occurred on your system. I browsed through the folders in the 2015-01-24-083208. Any tweaks, settings to change? Up to El Capitan, you'd simply search for 'backupd' in system.
You can use a Terminal command that will disable Time Machine's local snapshot feature, which will delete all of the local snapshots on your internal hard drive. By rotating Time Machine backups, a user can possess reasonable confidence a backup exists at another site that could be used to recover critical business data, should a failure, theft, or disaster occur. When I opened Time Machine Preferences, I now see that for one drive it says: Only back up yesterday 11:13pm and for the other drive it says Backups Yesterday 9:32am to Today 7:10pm. Just connect a drive, configure Time Machine to begin backing up the Mac, and ensure the disk is routinely connected to the Mac in order to enable Time Machine to update the backup. Is this correct, and if not what should I do to set it to overwrite as I can't see any settings in the preferences that relate to overwriting I have a 500 Gb iMac that Time Machine refused to back up after its own 1Tb capacity was filled.
As for why Time Machine wont back up there are several possibilities. Which is the more appealing option? Each clone requires its own drive or partitioned volume. Maybe we've just been the only ones who have had trouble?? I don't think I have lost any of my original source data, but it is worrying that my Time Machine backups have been wiped out and backing up is starting all over again. This morning when I looked at Time Machine preferences it does not display oldest or latest backup and when I open disk it shows 2015-01-24-083208. So I assume what I've wanted has been one of the dumps. This is at least my cursory understanding of the situation. If you are not familiar with terminal, this video is not for you.
Time Machine will periodically remove old backup files during the backup process, but doing this can help free up space on a shared drive even quicker. I am using the 'regular' settings on Time Machine - the LaCie Drive is the only item on the exclusion list I guess Time Machine put it there itself. If you are not careful with terminal, you can mess your Mac up. You might want to check Macs inbuild help In Finder select Help menu then Mac help , you can find detailed instructions about Time Machine there. They also, eventually, start taking up noticeable space on your hard drive.
I realize when the Time Capsule is full it will delete the oldest backups. I think you might be right, there would always be an element of doubt. . Enter Time Machine, navigate to external drive and open folder Backups. I've turned Time Machine off and disconnected all my drives from the computer.
I verified this by restoring a database and opening it in Entourage and sure enough the last message shows a date of Jan. This will remove those local snapshots from your internal storage. Don't know if anyone else has noticed this or not. This happens to me every one or two years. If drive is ok go to answer 3, if Disk Utility reports an error then post the result and I will provide further instructions.
Verify backups is only available with Timecapsule or other such devices. If it is a drive failure that's 2 drives that have failed in the past 12months for me. Apologies for the delayed reply, other priorities keep me away. I already resolved the issue but thought I'd post it here for the benefit of anybody who encounters the problem and searches MacRumors for a solution. I searched for solutions, and found none. You do realise that you are essentially throwing out the baby with the bathwater? You can then re-enable the feature, which I highly recommend.