Problem with external HARD disk - cannot mount the mac partition and can't unmount the partition windows

Hi all

Need your help. I have problems with my external hard drive. I worked on it yesterday when the cable is a little detached and disassembled my intestinal HARD drive.

Here are the specs:

1 Macbook Air 11.5 "running on El Capitan (10.11.1)

2 Buffalo Ministation external (1 TB) HARD disk divided into two: a Mac partition (for time machine) and the other a windows on FAT32 partition.

Before the accident yesterday, it was working OK.

Now, when I connect the HARD drive, it turns on but the Mac partition cannot be mounted (it does not appear on the Finder. I opened disk utility... just load forever and does not work) and the Windows partition is visible... but I can't take it apart without turning my computer.

I can assemble and disassemble a USB stick very well.

Any help would be appreciated.

Thank you!

Maybe you can explain a little better.

I would like to make some general comments before having your replay.

It is not wise to use TM on a disk with apple unformatted or partitions, it is preferable to have a dedicated TM drive also.

For TM, the rule is that the drive is about 3 times the size of the boot disk.

Normally you 'survive' a good step disassemble the drive external, but in this case with a another partition formatted on this subject, I'm not sure if that do not corrupt the disk, especially since the Windows partition is bootable. I have suspct the partition GUID on the TM partition table is corrupt.

I propose to start the disk completely: in DiskUtility select the 'higher' level (name of manufacturer) and the Partition, one OS X Extended (journaled) partition table Partition GUID. And use it only for TM, is not too big for this.

Have another drive formatted NTFS for Windows.

Tags: Mac OS & System Software

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