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A couple of weeks ago my MacBook Pro 8,1 early 2011 with a SanDisk 256 SSD wouldn't boot. I have ran the Apple Hardware test many times and everything checks out fine, but even when I restore from the Time Machine or even clone using CCC the MacBook won't boot from the SSD. I have now got an old Fujitsu mechanical 120 GB HD and the MacBook runs fine from this now.

The SSD can read and write as a normal external drive when connected via docking station so why can't I boot from it? I have tried formatting using APFS as well as OS X journaled (GUID)...but to no avail!

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  • Have you tried a clean install (including wiping the drive) of macOS? Don't restore the backup, but do a clean install.
    – Allan
    Commented Feb 17, 2018 at 16:43
  • yes...tried that with the Internet restore.
    – Robert Buckley
    Commented Feb 17, 2018 at 20:14

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Solution to my problem was to buy a new internal Sata cable. I could have spared myself a whole lot of trouble if I had done that at the start.

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