Why my external hard drive cannot be mounted or viewd by a Macbook

Hello

I can't see my HD exertenal from the finder.

I do not have G-Tech HD and I use with TimeMachine. This HD has two partitions.

The first is used for the backup with Time Machine, a macbook air, and the second partition is used to back up a macbook pro with Time Machine.

It worked fine until I look in the external hard drive (partition macbook). Now, it is not possible to mount the external hard drive. From the Finder, I see no partition eighter the first or the second.

I plugged it in an another mAcbook air and no way to see inside the external hard drive.

Howerver, I pluggged in a 14.04 ubuntu and I was able to navigate through the external hard drive

Why can I see the contents of the external HD with a ubuntu n not with a Macbook?

And how can I solve this problem?

See you soon

Stone

El Capitan has permissions configuration much tighter than earlier versions of Mac OS X and it can become a problem to open files from a different computer. You need to tell us what OS you are running on all computers.

I suspect that Ubuntu is having no problem because it does not under the same restraint of permissions.

It worked fine until I look in the external hard drive (partition macbook).

What you have done here, caused the change of permissions.

Don't forget that connect a player directly on a computer and use it plugged into an airport will have different permissions issues.

I don't have much in the way of a solution. Apple has changed repair them permissions on El Capitan.

You have a Mac running an earlier version of Mac OS X?

If your two partitions are used just to make the Time Machine backups...

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