- May 3, 2012
- Intel DH67BL
- Core i7-2600K
- Intel HD 3000
- Mobile Phone
The patch was done by someone else, so I don't really understand the details...Hi @RehabMan, I would like to express my sincere thanks for providing this quick-fix for the black booting screen glitch where white apple logo is "shredded" half-way through that boot-screen.
Despite not having same mobo, I'd like to confirm that even on my MSI Z97i-AC board with Core i7-4790K (iMac15,1) using only embedded IGPU (HD 4600 Graphics) it works as "advertised" via Clover, of course. Many thanks!
For learning purposes, could you possibly explain briefly why this "glitch" is happening? Is the boot screen switching from some display mode to another? Or the graphics driver kicks-in? Just to undertsand what this patch does, really
I've been reading in all these pages where you keep tirelessly repating to some people about "CSM" (i.e. Compatibility Support Module, per your guide) but I wanted to ask, if you know about a similar "name" for desktop BIOSes, as obviously this isn't the same across all motherboards. I cannot find a similar reference on my MSI EFI BIOS, for example. Is this "CSM" setting under the boot options (e.g. UEFI+Legacy) or under "Windows 8" options? I have only some "MSI Fast Boot" and "Fast Boot"... There is also a "Secure Boot" if enabling "Windows 8" boot... But anyway
But it has something to do with graphics initialization. BIOS on PCs seems to not initialize the graphics hardware the way OS X expects, so you get the strange glitch. The patch jumps around some code which seems to trade black screen for the glitch...
And yes, CSM is referred to by different terminology in BIOS user interfaces. Often bundled with legacy boot enablement.