HT204156: About the screens you see when your Mac starts up
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Q: External Drive not showing up
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Aug 27, 2016 7:26 PMby Kappy,HelpfulContact Seagate's tech support for help with their product. Meanwhile, you might try connecting to a different port, switching cables, and repairing the drive with Disk Utility.
Repair the Drive for El Capitan
- Restart the computer and after the chime hold down the Command and R keys until the Utility Menu appears.
- Select Disk Utility and press the Continue button.
- Then select the indented (usually, Macintosh HD) volume entry from the the side list.
- Click on the First Aid tab in the toolbar and wait for the Done button to activate. Click on it, then quit Disk Utility.
- Select Restart from the Apple menu.
