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John T. F.
John T. F., Mac Druid
Category: Mac
Satisfied Customers: 2949
Experience:  20+ years in the computer/Mac industry
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Thanks....my seagate usb ext drive that I have used as Time

Customer Question

hey thanks....my seagate usb ext drive that I have used as Time Machine backup will not mount. It shows up in system profiler but no icon and can not access it I am on Mac Cylinder running yosemite.
Submitted: 1 year ago.
Category: Mac
Expert:  John T. F. replied 1 year ago.

Hi and thanks for your submission.

Do you know if it will appear in Disk Utility?

In the Finder, click on "Go" in the menubar and choose "Utilities"

Locate the "Disk Utility" app and open it

In the left hand sidebar, choose your external Hard Drive, if visible.

On the right hand side of the page, click "Verify Disk" (If the procedure uncovers errors, please click "Repair Disk" to repair)

Once the process has completed, restart your Mac.

Now see if the drive appears normally.

John

Customer: replied 1 year ago.
Will try now
Expert:  John T. F. replied 1 year ago.

Good luck!

John

Customer: replied 1 year ago.
Still not opening.
Expert:  John T. F. replied 1 year ago.

To clarify, were you able to verify the disk without error?

If so, see if the drive appears in Safe Boot mode.

Restart your Mac

As soon as you hear the Startup chime, press and hold the SHIFT key

Continue to hold the Shift key until you see the Apple logo and progress indicator.

Then, let go of the Shift key and let it boot to the Desktop (it may take longer than usual so please be patient).

Now test for the drive.

Next restart and let me know the results.

John

Customer: replied 1 year ago.
Verified without error. Will try safe boot now.
Customer: replied 1 year ago.
I can't eject the sea gate slim drive from disk utility
Customer: replied 1 year ago.
Ok. Just went ahead with restart. Booting now.
Customer: replied 1 year ago.
No change. Disk is visible and verified/repairs to "partition map ok". But not visible on screen.
Customer: replied 1 year ago.
Tried to restore seagate that won't show to another volume and error was "could not validate source"
Customer: replied 1 year ago.
I give up unless you have another idea.
Expert:  John T. F. replied 1 year ago.

When in Disk Utility and you select the volume, do you see the normal stats at the bottom of the window indicating drive space used, etc...?

John