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You can use Time Machine, the built-in backup feature of your Mac, to automatically back up all of your files, including apps, music, photos, email, documents, and system files. When you have a backup, you can restore files from your backup if the original files are ever deleted from your Mac, or the hard disk (or SSD) in your Mac is erased or replaced.
Create a Time Machine backup
To create backups with Time Machine, all you need is an external storage device. After you connect the device and select it as your backup disk, Time Machine automatically makes hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for all previous months. The oldest backups are deleted when your backup disk is full. Create bootable dmg usb windows 10.
Connect an external storage device
Connect one of the following external storage devices, sold separately. Learn more about backup disks that you can use with Time Machine.
- External drive connected to your Mac, such as a USB, Thunderbolt, or FireWire drive
- External drive connected to an AirPort Extreme Base Station (802.11ac model) or AirPort Time Capsule
- AirPort Time Capsule
- Mac shared as a Time Machine backup destination
- Network-attached storage (NAS) device that supports Time Machine over SMB
Select your storage device as the backup disk
When you connect an external drive directly to your Mac, you might be asked if you want to use the drive to back up with Time Machine. Select Encrypt Backup Disk (recommended), then click Use as Backup Disk.
An encrypted backup is accessible only to users with the password. Learn more about keeping your backup disk secure. Game boy dmg silicone button pads for kids.
If Time Machine doesn't ask to use your drive, follow these steps to add it manually:
- Open Time Machine preferences from the Time Machine menu in the menu bar. Or choose Apple () menu > System Preferences, then click Time Machine.
- Click Select Backup Disk (or Select Disk, or Add or Remove Backup Disk):
- Select your external drive from the list of available disks. Then select ”Encrypt backups” (recommended) and click Use Disk:
If the disk you selected isn't formatted as required by Time Machine, you're prompted to erase the disk first. Click Erase to proceed. This erases all information on the backup disk.
Enjoy the convenience of automatic backups
After you select a backup disk, Time Machine immediately begins making periodic backups—automatically and without further action by you. The first backup may take a long time, depending on how many files you have, but you can continue using your Mac while a backup is underway. Time Machine backs up only the files that changed since the previous backup, so future backups will be faster.
To start a backup manually, choose Back Up Now from the Time Machine menu in the menu bar. Use the same menu to check the status of a backup or skip a backup in progress.
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Learn more
- If you back up to multiple disks, you can switch disks before entering Time Machine. Press and hold the Option key, then choose Browse Other Backup Disks from the Time Machine menu.
- To exclude items from your backup, open Time Machine preferences, click Options, then click the Add (+) button to add an item to be excluded. To stop excluding an item, such as an external hard drive, select the item and click the Remove (–) button.
- If using Time Machine to back up to a network disk, you can verify those backups to make sure they're in good condition. Press and hold Option, then choose Verify Backups from the Time Machine menu.
- In OS X Lion v10.7.3 or later, you can start up from your Time Machine disk, if necessary. Press and hold Option as your Mac starts up. When you see the Startup Manager screen, choose “EFI Boot” as the startup disk.
10.5: Time machine, corrupt sparse images, and panics | 11 comments | Create New Account
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10.5: Time machine, corrupt sparse images, and panics
I also had a case where my sparse image became corrupted - my wireless network dropped right as it finished the backup, and managed to corrupt an unknown file, the spotlight index, and the journal. Real mess. I don't have DiskWarrior 4.1 since Alsoft refuses to post an updater for paid customers (and I am <strong>extremely upset</strong> with them for this), but I was able to repair the disk image using the built-in fsck_hfs. Once repaired, everything has been fine since.
In my case the corruption only caused backups to fail, not kernel panics.
In my case the corruption only caused backups to fail, not kernel panics.
10.5: Time machine, corrupt sparse images, and panics
I have a plain vanilla Time Machine setup - locally connected external FW drive - and I suddenly began experiencing periodic kernel panics. Tried to repair the TM disk, Diskutil failed! Had to reformat (low level, writing 0s) and set up TM afresh to get things back to normal.
10.5: Time machine, corrupt sparse images, and panics
Minus the KPs, I have been experiencing some oddness with my Time Capsule and Time Machine. One of the things that happened was that one of my backups got corrupted. I hadn't had an outage or anything, but I was getting that same 'sibling link' error in Disk Util. I do not have Disk Warrior, unfortunately, so I had to ditch the damn thing and start over. Does not instill a whole lot of confidence in this back up routine!
10.5: Time machine, corrupt sparse images, and panics
I don't have a sparsebundle to try the command out on, but I have been known to use hdiutil quite a bit. Wouldn't the following command be correct?
hdiutil attach -nomount -readwrite /path/to/sparse/image
man hdiutil
says mount is a synonym for attach
. 10.5: Time machine, corrupt sparse images, and panics
Great hint! It worked for me and sorted out my corrupt TM backup on a USB drive on my APE base station. Disk Warrior to the rescue again!
10.5: Time machine, corrupt sparse images, and panics
I would have had to delete the entire sparse image file and start a new complete backup series.I'm looking at a DMG Image of my Time Machine drive (long story, which I'll post in the forums) and I don't see the
.sparsebundle
file in my image. Does this mean I have restart all of my backups? 10.5: Time machine, corrupt sparse images, and panics
I had the same problem after a power outage while the backup was running.. I found out doing what you describe and then repairing the sparsebundle using Disk Utility did fix the whole thing.. I'm describing the whole process here:
<a href='>http://blog.hardmac.com/archives/how-i-saved-my-corrupted-time-machine-sparsebundle-image'>; How I saved my corrupted Time Machine sparsebundle image… </a>
Thanks for your help.
<a href='>http://blog.hardmac.com/archives/how-i-saved-my-corrupted-time-machine-sparsebundle-image'>; How I saved my corrupted Time Machine sparsebundle image… </a>
Thanks for your help.
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10.5: Time machine, corrupt sparse images, and panics
Awesome fix - thank you for all who figured this out!
I've not had the KPs, (Time Machine would fail after about 1 month - disk would become 'read only') but have had to previously reformat and wipe out my time machine backups (Lacie USB connected to Airport Extreme; OS 10.5.2 Powerbook G4). Nothing else worked - and I've been scouring the Apple discussion boards.
Final fix that worked: the 'hdiutil xxx..' terminal command to 'attach' the sparsebundle; followed by DiskWarrior 4.1 to repair the corrupt image.
Thank you again to all that contributed to this fix - I'm back up and running time machine backups and didn't have to wipeout a month's worth of backups - which, I believe, is what Time Machine on Leopard is supposed to do.
- higgy
I've not had the KPs, (Time Machine would fail after about 1 month - disk would become 'read only') but have had to previously reformat and wipe out my time machine backups (Lacie USB connected to Airport Extreme; OS 10.5.2 Powerbook G4). Nothing else worked - and I've been scouring the Apple discussion boards.
Final fix that worked: the 'hdiutil xxx..' terminal command to 'attach' the sparsebundle; followed by DiskWarrior 4.1 to repair the corrupt image.
Thank you again to all that contributed to this fix - I'm back up and running time machine backups and didn't have to wipeout a month's worth of backups - which, I believe, is what Time Machine on Leopard is supposed to do.
- higgy
10.5: Time machine, corrupt sparse images, and panics
Note that if you get 'operation not supported on socket' what that really means is that you don't have the right permissions. You'll need admin privs to mount the disk in that case (sudo hdiutil ..)
Time Machine From Dmg Image In Windows 7
10.5: Time machine, corrupt sparse images, and panics
Time Machine From Dmg Images
This is a brilliant hint and just saved me a huge headache. Time Machine grrrr. DiskWarrior to the rescue again indeed.