Error Writing Time Machine Information File
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backup on a NAS (as opposed to an external drive attached to a router) and it needs to be repaired. The NAS is likely a hardware product from the likes of Netgear, Synology, Buffalo
Wireless Time Machine Backup Without Time Capsule
or QNap - or for those of us with a home-grown backup server repair time machine sparsebundle running FreeNAS. The error you may see is "Time Machine completed a verification of your backups. To improve reliability, Time Machine time machine backup over wifi must create a new backup for you." This can be fixed by following the below. From your Mac, connect to the network share that houses the sparsebundle. At the top level of the
Fix Time Machine Sparsebundle Nas Based Backup Errors
drive are the various sparsebundles that make up your individual computer backups. Do not double click on these sparsebundles or try to repair with Disk Utility. Open Terminal and then switch to root by typing sudo su - and then enter your password. The verication that has already run has marked your sparsebundle as bad, so first we need to make it look normal. From the command line
The Volume Time Machine Backups Was Found Corrupt And Needs To Be Repaired.
chflags -R nouchg /Volumes/{name of your network share}/{name of}.sparsebundle This may take a little while. Now type hdiutil attach -nomount -noverify -noautofsck /Volumes/{name of your network share/{name of}.sparsebundle You will then see something like /dev/diskx Apple_partition_scheme
/dev/diskxs1 Apple_partition_map
/dev/diskxs2 Apple_HFSX Where x is the disk id for the external disk. You are interested in the one labeled Apple_HFSX or Apple_HFS. It might be 2, 3, 4 or higher. At this point, I have found that the filesystem check is already happening. You can check for activity by tail'ing the fsck_hfs.log tail -f /var/log/fsck_hfs.log If fsck is going then in my experience it will be able to repair the sparsebundle. Go away for a few hours and let it chug away. When it is done, you will either see ‘The Volume was repaired successfully' or ‘The Volume could not be repaired' If the latter you can run disk repair again: fsck_hfs -drfy /dev/diskxs2 (Optionally if you have the available RAM, you can set a RAM cache in the command above to help speed up this command like so: fsck_hfs -drfy -c 750 /dev/diskxs2 This will use 750MB of RAM - feel free to change this amount to best fit your sy
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Time Machine Wireless External Hard Drive
How To by Sasmito Adibowo+ 8 Comments Time Machine completed a verification of your backups on "
from the Adobe Community Summit I knew there were a couple of things I had to do. Getting a bit of rest and hanging out with my wife and son were at the very top of the list. Closer to the bottom was plugging http://www.aaronwest.net/blog/index.cfm/2008/5/18/A-Fix-for-Time-Machines-Backup-Failure my MBP into a power brick in order to backup my computer to my Time Capsule. Little did I know it wasn't going to be as easy as usual.After plugging in and initiating the backup, Time Machine took over 20 minutes to prepare the data - it simply displayed "Preparing data" for what seemed like ages. Finally, it finished the prepare data phase and displayed how much data it was backing up, about 5.3 GB. I'm simply amazed that one weeks worth of work time machine could generate 5.3 GB of changed data. Realizing it was going to take Time Machine quite a while to copy 5.3 GB wirelessly to the Time Capsule I shut the MBP's screen about 80% of the way and decided to return to the living room to do other things.A few hours later I came back to my MBP to see the following message:First, many thanks to Apple for giving me a useful error message I could do something about. Pfff. I tried several things to time machine backup get Time Machine working again including rebooting, reconnecting to the Time Capsule, and simply restarting the backup process. All failed with the same error message.After hitting up Google for answers (Google always seems to have answers you know) I found a few posts on the MacCast forums that seemed promising. A user by the name of "karinlord" deserves credit for the right set of steps to mitigate this problem.I believe my problem started when my computer decided to sleep in the middle of the backup process. I am unsure if this occurred because of my systems preferences or whether I actually shut the computer lid enough to force it to sleep. Regardless, Time Machine seems to freak out if it gets interrupted during the backup process. When this happens several files and folders are left on your backup volume that deter any subsequent backups.To get Time Machine going again, you need to remove the errant files with the following steps:Ensure your backup device is turned on and connected to your computer (wirelessly or wired, it doesn't matter)Turn off Time Machine using the big button in Time Machine preferences. NOTE: I did not execute this step and was still able to fix Time Machine.Make sure the backup volume (which is just part of the backup drive) is mounted to your desktop/Finder. You may have to initiate (and subsequently cancel) a Time Machine backup process in order to see the drive on the desktop or in Finder.Access your backup volume in Finder (it shoul