![]() ![]() I had played around with installing Clover (the UEFI bootloader almost synonymous with Hackintoshes) on USB flash drives and putting the DSDT from my MacBook Pro 2011 in the /Clover/ACPI/Windows folder. Hmmm… Interesting.Īs someone who also deals in Hackintoshes I am very aware of DSDT’s and how editing them can help get macOS/OS X running on home brew PC hardware. So Windows “honors' the root bridge and macOS/OS X and Linux disregard it. Neither of those OS require a DSDT override and can allocate freely in the huge 64-bit PCIe address space.” macOS ignores the root bridge constraints as too does Linux when booted with the 'pci=noCRS' parameter. Windows OS honors the root bridge definition and will allocate PCIe devices within it. A watermark TOLUD value is then set and locked in the system firmware. “A Windows system's DSDT table root bridge definition (ACPI PNP0A08 or PNP0A03) is usually confined to a reserved 32-bit space (under 4GB) budgeted to be large enough to host the notebook's PCIe devices. I had tried to pass SETPCI commands from GRUB into Windows 10 with no luck.Ī quote from the other forum link to above got my brain spinning.I had messed around with MM commands in a UEFI shell (The shell provided in the rEFIt package) to no avail. ![]() The part that was frustrating to me was that many users like myself have lots of UEFI installs on their MacBook Pro 2011 and those OS's have no problem 'seeing' the HD audio controller. I was given the answer from a tutorial only adjacently related via this other forum post.Įssentially what we knew was that Windows didn’t “see” the correct audio devices when booted in pure EFI. If anyone is still interested I have found the solution for audio on MacBook Pro 2011 Windows 10 UEFI installs - it has taken me 4 years to figure out. The link will give you some screenshots for reference but below is a copy of the text of the answer. I solved it with this post on the Apple Stack Exchange site. ![]()
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