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time machine no longer recognizes any of 3 exte...

time machine no longer recognizes any of 3 external hard drives used before as backups......

Please read If you can't back up or restore your Mac using Time Machine - Apple Support.

Needless to say, if you are using any non-Apple "anti-virus" junk, don't. Lots of things won't work if you do.

最后更新：2017-08-22 07:20:17

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