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<< Solved >> A ROM patch for JMicron JMB363 (GSATA) with DVD Fix High Sierra not recognizing issue.

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ASUS H170 Pro Gaming
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I have been using old but functional JMicron JMB363 PCI-e card to extend old IDE DVD-ROM for windows for some time.
This summer tried Hackintosh and loved it(DVD attach on JM363 card's SATA port works! Great!). But I had issue since update from Sierra 10
12.6 to High Sierra, before that Sierra can recognize DVD-RW.

I searched on and on and finally found a nice geek whos name is Henry:
http://blog.stuffedcow.net/2012/08/jmicron-jmb36x-add-on-card-ahci-mode/

I tried to update JM363 PCI-e card with his homebrew "patched option ROM" (the SATA one, not AHCI), and DVD back to be recognized (but you won't be able to boot with the SATA DVD which doent's bother me), other patched ROM does not work with different issues I will not include in this post.

The flash procedure is simple, use Jmicron flash tool 1.9, such as c:\ JM36upd.exe /w romname.bin
 
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