How do I set Time Machine to remind me to backup?

I don't keep my external hard drive plugged into my computer all the time. I just plug it in every few weeks to backup my hard drive; however, I have been forgetting lately because the reminders stopped popping up on my desktop. Before I upgraded to Yosemite, the Time Machine icon on the top bar would pop with messages to remind me it's been so many days since my last backup and then an exclamation mark would be in the place of the hour and minute hand in the icon. Now, it's stopped reminding me to backup, and I can't find anything in preferences about reminders for Time Machine. Has something changed with Yosemite, or can I set a reminder to backup for Time Machine?

shyamala14 wrote:
Before I upgraded to Yosemite, the Time Machine icon on the top bar would pop with messages to remind me it's been so many days since my last backup and then an exclamation mark would be in the place of the hour and minute hand in the icon.
Now, it's stopped reminding me to backup
If Time Machine under Yosemite is not responding as expected:
Apple Feedback http://www.apple.com/feedback/
Bug Reporter https://bugreport.apple.com/
google for options:
http://www.maclife.com/article/howtos/how_create_time_machine_backup_reminder_al ert
http://www.macupdate.com/app/mac/26704/timemachineeditor

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How can I force Time Machine to make a complete backup of my Hard Drive. I just installed a new external drive for Backup since my previous one failed. Now when I back up, Time Machine only backs up my data folder and the Users folder.

How can I force Time Machine to make a complete backup of my Hard Drive. I just installed a new external drive for Backup since my previous one failed. Now when I back up, Time Machine only backs up my data folder and the Users folder.
When I start a backup. Time Machine says "Oldest Backup: None; Latest Backup: None", so it seems like it should do a complete backup, but it only does a partial.

Hi I'd like to jump in here. Your app showed me this:
Time Machine:
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          Mobile backups: OFF
          Auto backup: YES
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I am trying to update my time machine backup on time capsule, but time machine keeps trying to create an entirely new backup (evidenced by the 200GB backup size). How can I get time machine to modify my old backup rather than create a new one?

I am trying to update my time machine backup on time capsule, but time machine keeps trying to create an entirely new backup (evidenced by the 200GB backup size). How can I get time machine to modify my old backup rather than create a new one?

It must have found the old backup corrupt.. so you will more than likely have little choice. You can archive off the old backup if it is still useful.
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Go to Time Machine Preferences > Options.
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Hi Everyone.
Thanks in advance for your help.
Right off the bat let me say I am using Mavericks 10.9.1 on a 2011 Macbook Pro and using all Lacie external hard drives.
I am trying to get Time Machine to alternate between two attached external hard drives, trying to be safe in case one of the backup drives itself fails.
I have both drives set in Time Machine.
From what I gather Time Machine should by default alternate between drives when backing up (I would assume it does one big initial backup on each then subsequent backups are just changes).
But this is not how it seems to be working and I cannot find a straight answer despite much Googling and Foruming
Unfortunately it seems to only be backing up to "External Hard Drive 1".
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I manually clicked "Back Up Now" and it started to work on "External Hard Drive 2" (like I want it to) for a minute but it appears to have stopped and gone back to backing up to "External Hard Drive 1".
Am I missing something? Does Time Machine only move on to another disk when the first one runs out of space? Do I have to turn one off in order to force it to back up to the other drive (that would be less convenient of course)?
I am hoping that I am missing something and that it will just alternate between the two. Otherwise it is not the most comforting and thorough backup system as I had hoped when I purchased the additional external hard drive.
I have a 1TB drive and a 500gig partition on another drive, both dedicated to backups (my Macbook HD is 475gig). It will take awhile for each to fill up and who knows what could happen during that time. Having Time Machine alternate between hard drives would be a nice small bit of security if the worst happened.
I realize that there are tons of other options for backing up but I just want to use Time Machine if I can.
Again thank you for your help!

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RAID Basics
For basic definitions and discussion of what a RAID is and the different types of RAIDs see RAIDs. Additional discussions plus advantages and disadvantages of RAIDs and different RAID arrays see:
RAID Tutorial;
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Hardware and Service Comparison.
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RAID Hardware is always a disk controller to which you can cable up the disk drives. RAID Software is a set of kernel modules coupled together with management utilities that implement RAID in Software and require no additional hardware.
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Software RAID is more flexible than Hardware RAID. Software RAID is also considerably less expensive. On the other hand, a Software RAID system requires more CPU cycles and power to run well than a comparable Hardware RAID System. Also, because Software RAID operates on a partition by partition basis where a number of individual disk partitions are grouped together as opposed to Hardware RAID systems which generally group together entire disk drives, Software RAID tends be slightly more complicated to run. This is because it has more available configurations and options. An added benefit to the slightly more expensive Hardware RAID solution is that many Hardware RAID systems incorporate features that are specialized for optimizing the performance of your system.
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I know this is more information than you need but it is a fairly complete compilation of facts:
Disks you can use with Time Machine
Time Machine Server Requirements
http://manuals.info.apple.com/en/TimeCapsule_SetupGuide.pdf
Pondini's Time Machine FAQ

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7string48 wrote:
Thanks so much Pondini!! You just quickly answered a question that none of the Mac people in 3 stores or Apple Care have been able to answer.If you can format it HFS+ (any variation of Mac OS Extended), it will work. If not, it won't.
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Thanks a lot for responding, I really appreciate you taking the time to respond. I did check the computer name and it is the same. There are no new backups since I've received my computer back from Applecare so I'm not afraid to loose and current saves, all the ones I want are in that bundle. Once I saw that it tried to create whole new back up (sparsebundle) and couldn't because it didn't have enough space, I turned time machine off to make sure nothing changes from what was previously set. It's just a matter of figuring out how to make Time Machine recognize all the backups again so that I can access the them and continue to back up on it.
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Sorry again if I'm being repetitious, but I feel like that's the first time I've actually correctly described the issue.
Thanks a lot.

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How do I set Time Machine to remind me to backup?

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