Tha backup cannot be opened.

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Tha backup cannot be opened.

I have iMac middle 2011 with new El Captain installation. At the beginning was my trouble with system boot where "white screen" with apple logo and thermometer under. It takes about 2 hours. After that I take recovery mode and there use disk utility for disk control.All things was OK. Than I thy to use Time Machine backup for system recovery. Without success. And then I try to repair OS X. First time was OK. But after rebooting was "white screen" back. I try all steps again.

After system repairing (reinstalling) was my iMac clear and Time Machine backup write me a mistake - A unexpected error occurred trying to open the backup. (Error 112)

Is any possibility to repair backup file for taking system and old data back? I do not format the system disk and the Time Machine backup is on external disk WDMyCloud connected to TP Link wifi router. The backup file has about 680 GB but Disc Utility cannot open it.

Has anybody idea about TimeMachine file repair?

iMac, OS X El Capitan (10.11)

Posted on Oct 12, 2015 1:55 PM

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Answer 1

Linc Davis

Level 10

209,547 points

Oct 12, 2015 7:56 PM in response to Beny97

A third-party network-attached storage device (NAS) or router is unsuitable for use with Time Machine, especially if it's your only backup. I know this isn't what you want to hear. I know that Time Machine accepts the device as a backup destination. I know that the manufacturer says the device will work with Time Machine, and I also know that it usually seems to work. Except when you try to restore, and find that you can't.

Apple has published a specification for network devices that work with Time Machine. No third-party vendor, as far as I know, meets that specification. They all use the incomplete, obsolete Netatalk implementation of Apple Filing Protocol.

Apple does not endorse any third-party network device for use with Time Machine. See this support article.

If you want network backup, use as the destination either an Apple Time Capsule or an external storage device connected to another Mac or to an 802.11ac AirPort base station. Only the 802.11ac base stations support Time Machine, not any older model.

Otherwise, don't use Time Machine at all. There are other ways to back up, though none of them is anywhere near as efficient or as well integrated with OS X. I don't have a specific recommendation.

Your only recourse for any problems that result is to the manufacturer. There may be no way to recovery the data.

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