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Reviews around drive (1.00 of 5)
Sapphire 11265-05-20G Radeon Pulse RX 580 8GB GDDR5 Dual HDMI / DVI-D / Dual DP OC with Backplate (UEFI) PCI-E Graphics Card Graphic Cards
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I booted from the second hard drive, still nothing
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‘just in case’; booting from two different hard drives to verify it worked with both old and new Mac OS’s; and planning the conversion to Mojave
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Finally I gave up and re-installed my original Mac Pro display card, everything now works fine using either hard drive
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I could hear the Western Digital hard drive going through the boot up
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