Time Machine is Apple's built-in backup software. Time Machine was first introduced on OS 10.5 Leopard.

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Time Machine completed a verification of your backups. To improve reliability, Time Machine must create a new backup for you

since upgrading to El Capitan, every time my machine tries to make a backup to my Time Capsule, it prompts me with this message. Time Machine completed a verification of your backups. To improve ...
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Encrypt External Hard Drive for Mac and Linux

I have an external hard drive that I backup with Time Machine. I'm trying to determine the best way (or if it's even possible) to encrypt it so that Time Machine can still back it up and it can be ...
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91 views

Inherit Time Machine backup after changing source hard drives

I am using Time Machine to backup an external HDD (A) (2 TB) linked to my computer to an external 6 TB HDD drive. I now had to shift the data from HDD (A) to a new 3 TB one (B). Is there a way to ...
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Network Intermittency with Time Machine causes a 'Completed Verification' dialog

It appears that when disconnecting from a network while a TM backup is in progress results in the "Time Machine has completed a verification of your backups" message once the connection to the backup ...
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129 views

Clear large .MobileBackups files/folder?

Got some issues with temp files from Time Machine which is filling up my boot disk with over 400GB of files. MacBook Pro 10.7.5 I have tried the command sudo tmutil disablelocal, restarting the mac ...
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366 views

Time Machine says not enough space but there is plenty of space, please help!

I'm not sure what happened but I used to be able to backup to a drive shared with a networked mac mini using OSX server. Now all of a sudden it says there is not enough space. So I reformatted the ...
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66 views

System logs backup with Time Machine

It seems that Time Machine does not backup system.log in /private/var/log. Mac OS X 10.9.5/Six core Intel Xeon Can I force that file to be backed up?
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57 views

Internal (Apple SSD) hard drive problem

I'm having terrible issues with my Mac since I tried to restore the entire system from a Time Machine backup, which ended up showing a "an error occurred while adding a recovery system to the ...
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448 views

an error occurred while adding a recovery system to the destination disk

I have a late 2013 retina macbook pro that came up with OS X mavericks. I have tried to restore my macintosh hard drive from timemachine backup, I followed these steps: rebooted mac holding cmd+R, ...
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46 views

How can I safely clean up open files left by spotlight on my external hard drive?

Spotlight decided to index my external hard drive that I use for backups without asking my permission. This made it impossible for me to safely eject the external hard drive without potentially ...
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17 views

Timemachine Mac Mini with 2 Hard Drives

I have a mac mini server with 2 Hard Drives, one for the system and active files (Server HD) and one serving as an archive (Archive HD). Is it possible to use Time Machine to back up both disks and ...
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46 views

Computer doesn't recognize hard drive for Time Machine

Using Macbook Pro with Yosemite 10.11.3. For more than a year I have used a WD My Passport external hard drive (1 TB) for Time Machine. Beginning two weeks ago when I plug in to get a Time Machine ...
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60 views

How to restore backups manually from Time Machine?

I bought a new mac a few days ago. Before my new mac I had also an mac. I back upped everyday using TimeMachine. I did a clean install, so I can start blank. Now I want to restore some files back to ...
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22 views

tmutil associatedisk -a has no effect

I used this method often in the past and it always worked well. Now, however, tmutil will not re-associate my external disk. I copied the contents from drive A to drive B. Now I would like to continue ...
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152 views

Time Machine sparsebundle mounting problems

Problem I have a Time Machine backup which contains a lot of valuable information and I'm trying to access it. What's the problem? I'm trying to mount it and nothing1 happens. Nothing happens? So I ...
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33 views

Passport couldn't back up

I have had my passport for a couple of years and yesterday I got a message that it couldn't back up. (see below) Time Machine couldn’t complete the backup to “My Passport”. Unable to complete ...
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32 views

New SSD and how restore backup on it

iMac 2009 HDD failed so I installed a new SSD. I have a TM backup on an external drive, but now I can't figure out how to get the system up and running. I tried cmdR to bring up the recovery mode but ...
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24 views

Encrypted Hard Disk troubleshooting

I have problems to read an encypted hard disk. Unfortunatly I do not remember if I did encryted with Time machine or Disk Utitlity. I think I did it with the first one (Time Machine) as I used the ...
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34 views

Keep whole Time Machine backup plus incremental Photos backup on external HDD

I have a 320 GB HFS+ external HDD. My MacBook Air only has 128 GB of storage which is why I want Time Machine to back up my Photos to that external drive in order to be able to delete the Photos off ...
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19 views

Time Machine complains of changed identity of backup volume

I had to reboot my TimeCapsule, since it was non-responsive. After the reboot, everything seemed to work fine. Except for TimeMachine on my iMac. It complains about a changed identity of the backup ...
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74 views

Remove hidden iCloud folder from Time Machine backups

Problem: Inspecting my Time Machine backups using BackupLoupe, I found that a hidden folder in iCloud drive is taking up a lot of my backup space. I don't want to backup this specific hidden folder, ...
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27 views

Data recovery/overwritten files?

I was troubleshooting how to install boost and came across a thread on stackoverflow that seemed to be about vaguely the same thing. I ran the terminal commands written in the thread, and realized (...
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41 views

Will a Time Machine backup drive still be recognized as such if I add a USB hub between it and my Airport Extreme?

When I first set up my Time Machine backup, I did the initial backup by connecting the USB backup drive directly to my Mac. To my dismay, I discovered that I couldn't then unplug it and then move it ...
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449 views

How should I copy OS X server environment to another machine for update?

I have a server running Server.app (3.2.2) on Mac OS X 10.9.5. It hosts File Sharing, Mail, VPN, Websites, DHCP, DNS, and Open Directory etc. It also hosts phpBB3 bulletin boards. Because the OX ...
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19 views

Storing data on a external drive used for backup

Is it safe to store data on HDD which I selected to use as a backup device in time machine? Or should I add another partition for that? I do not know how does time machine behave when there is not ...
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Back up different folders to different drives

In Time Machine one can back up to several drives at the same time. It is also possible to control which folders are backed up and which are not. However, it seems to me that the same folders have to ...
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314 views

Make Time Machine-like backups of Photos onto external drive

I don't need to backup my whole disk but I want to backup my Photos once a month. From what I've read, Time Machine seems to work amazingly well so I was hoping for a similar solution for Photos. I ...
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336 views

Disk not ejected properly message since started to use El Capitan

I use an external LaCie hard disk as my Time Machine backup drive for MBP. But since I have upgraded to El Capitan, every time I opened the laptop, I'm getting greeted by at least two notifications: ...
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37 views

Can I access an OS X Yosemite Time Machine backup if I revert to OS X Mavericks?

I've had problems with Yosemite since I've installed it but I'm also wondering if it is even worth it to revert since I've done everything on Yosemite?
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658 views

How (in)vulnerable is OS X to encryption ransomware?

These days, malicious software seems to be infecting Windows computers, encrypting their data against their will, and asking for a Bitcoin ransom in exchange for the encryption key. In order for ...
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27 views

MacBook turned off during Time Machine initial back up - What do I do?

My external hard disk was partitioned to 3 partitions and one of which (300 GB) was set up with Time Machine. The initial back up started and was 3 hours through (around 65% of 211 GB complete). I ...
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35 views

How to rollback and override to a specific date within a Time Machine backup

my situation is kind of weird. I've totally crashed my system yesterday after installing bootcamp/windows 8.1 (bad partition format). Fortunately, I have a full backup Time Machine on a Drobo 5D (...
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222 views

User permissions problem after restoring from Time Machine to a new user Mac OS X El Capitan

My old MacBook Pro died so I did a restore from a Time Machine backup to an iMac. I did the restore to a new user so the info already in the iMac would not be lost. Everything went smoothly and I have ...
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53 views

MacBook Pro, iCloud Drive, Time Machine and Time Capsule 2

Can I use Time Machine and Time Capsule 2 to backup not only my MacBook Pro files, apps, etc. but also the files stored on my iCloud Drive for sharing with my other MacBook Pro and others?
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86 views

OS X prefers case insensitivity but TimeMachine seems to require case sensitivity?

As per What are the downsides to using Time Machine? the first item reads Time machine requires an Apple specific HFS+ filesystem to store backups. Which is a Mac OS Extended (Case-sensitive, ...
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disable Time Machine scripts

My 2013 iMac was recalled by the factory for some issue with the drive. The drive was changed and I started afresh - I thought. It turns out that I was running some schedule on Time Machine which ...
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573 views

Can there be two separate Time Machine Backups on the same external drive?

I'm interested in buying an external hard drive. I'd like to know whether if it's possible (and simple if so) to have two separate Time Machine Backups from two different MacBooks at the same time?
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61 views

OS X Server & Time Machine for Active Directory Users

In my setup, we have an OS X server, where the machine is bound to our Active Directory domain. I am able to log onto the machine using AD users/credentials locally, with no problems. However, when ...
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303 views

Time Machine can't find Time Capsule - but can mount it

I have a 5th Gen (A1470) Time Capsule on our network. The WAN ethernet port is wired to a router. The TC has a static IP, Wifi is disabled (on the TC) and router mode is off (bridged). I have a ...
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21 views

Time Machine exclusions added via tmutil do not appear in TM “Options” list

I can successfully add Time Machine exclusions using tmutil addexclusion and I can verify exclusions successfully with tmutil isexcluded but if I then open up Time Machine's Preferences and click "...
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33 views

Time Machine preferences - time estimate wrong, progress bar doesn't show any progress

When I start a backup (or when it is automatically started) I get some estimation about volume (394,2 MB of 2,58 GB) and backup time (e.g., "5 Minutes"). But even after hours this estimation does not ...
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15 views

Time Machine stopped backing up automatically

I have a Time Capsule as well as an external hard drive that I plug in every now and then to back up my laptop. For a couple of months, Time Machine stopped backing up automatically. I can open the ...
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1answer
354 views

Time Machine - move backup from local disk to network volume. Wrong case sensitivity?

I am trying to move a Time Machine backup from a Firewire disk (called disk1) directly connected to a computer to a network share, that is, from a folder in/on /Disk1/Backup.backupdb to a sparsebundle/...
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51 views

How Does Time Machine Back Up Packages (sparse bundles)?

I've been trying to understand how Time Machine backs up Parallels Virtual Machine .pvm files - particularly as relates to how to prune old backups, without losing the availability to restore VMs. ...
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141 views

Time Machine Backup Failing with Error 11

I've been trying to run a Time Machine backup for the last couple of days (OSX 10.7.5 and Porsche LaCie 2TB); however, it has been constantly failing. Console is producing the following crash messages ...
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123 views

Can't see old time machine backups

I've installed a new HDD in my iMac, so i reinstalled OS X. I used migration assistant to set back only the settings. I also wanted to set back some other folders, but since my new HDD was smaller ...
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65 views

Cannot use existng Time Machine Backup on OS X Server after changing password

I'm backing up to a drive attached to an OS X Server via the Time Machine backup service. Recently I changed my password on OS X Server I had been authenticating with for the backup. So, I had to ...
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33 views

Fresh Install of OS but what about the apps?

I currently have OS X El Capitan installed on my iMac I have backed up the whole HD to my 3TB NAS using "Timemachine". I have formatted a USB flash with the El CApitan installer on it ready to ...
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700 views

Sparse bundle on NAS - can't open “Resource temporarily unavailable”

I just got a new Lacie NAS with their NAS OS 4. After making an initial Time Machine backup to this device I wanted to mount the resulting (encrypted) disk image but when doing so I just received an ...
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1answer
547 views

Can't delete Logical Volume Group on Fusion drive

I have a 2014 iMac Retina running OS X Yosemite and a 3TB Fusion drive. I am attempting to restore it from a Time Machine backup, but when I try to do so, I get the error message, "The disk can't be ...