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Helpful answers
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May 6, 2015 6:28 AM in response to JBNelsonby D.Cohen,Take a look at this page: A flashing question mark or globe appears when you start your Mac - Apple Support
Try restarting your Mac in Safe mode:
- Shut down your Mac
- Wait until your computer turns off and after that press the Power button
- Right after you hear the startup tone, press and hold the Shift key
- Release the Shift key when you see a grey Apple sign and the progress bar below this sign
- Once you see Desktop, start a Disc Utility scan to detect and repair file system errors (don't forget to choose your main hard drive)
- Click on Verify Disc and then, if asked to fix problems, on Repair Disk
- After this, click on Verify Disc Permissions and then on Repair Disc Permissions
- After the process is finished, shut down your Mac and turn it back on after about 30 seconds
Hope this helps!
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May 6, 2015 8:04 AM in response to D.Cohenby JBNelson,Thanks D.Cohen. I will give this a try. My concern is that I went through the exercise of installing a new hard-drive and a fresh copy of OS X and everything was working fine for several hours and several shut-down and restarts. It was only this morning that the blinking folder with the question mark showed again.
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May 6, 2015 4:03 PM in response to D.Cohenby JBNelson,I followed your suggested steps but still no luck.
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May 6, 2015 4:15 PM in response to JBNelsonby OGELTHORPE,Your MBP may have a faulty SATA cable. Take out the Boot drive and install it in an enclosure. Connect it ti the MBP via USB and boot the MBP via startup manager:
https://support.apple.com/en-us/HT204417
If there is no indication of the '?', then that indicates the connecting SATA cable is faulty. It is not expensive to replace it.
Ciao.