[Guide] Booting the OS X installer on LAPTOPS with Clover

[RehabMan]

Noticed that the new version of Clover v3882 does not have the option of booting without caches

Use older version that does if you need it.

 

[mchan004]

My laptop: Graphic HD520 with screen 1920x1080
I have used your default config520-530-540.plist but it can't boot, the progress bar run to haft and the screen become blackscreen
But when I set fakeID to "0x12345678", It boot successful but graphic 7mb

 

[RehabMan]

My laptop: Graphic HD520 with screen 1920x1080
I have used your default config520-530-540.plist but it can't boot, the progress bar run to haft and the screen become blackscreen
But when I set fakeID to "0x12345678", It boot successful but graphic 7mb

Probably you neglected to set DVMT-prealloc as mentioned in the FAQ.

 

[mchan004]

Probably you neglected to set DVMT-prealloc as mentioned in the FAQ.

I have set DVMT to 128mb, but it not work
My issue is when booted, monitor wasn't display anything, it's black screen, but led on keyboard still. I must press power button to restart laptop.
(El capitan)

 

[RehabMan]

I have set DVMT to 128mb

How are you verifying 128mb?

 

[mchan004]

How are you verifying 128mb?

Use the following at your own risk. I assume no responsibility. This is for information only.

I extracted the BIOS using the Universal BIOS Backup Toolkit (https://forums.lenovo.com/t5/Lenovo...niversal-BIOS-Backup-ToolKit-2-0/td-p/1205920).

https://github.com/LongSoft/UEFITool/releases. I used UEFI Tool NE. I looked for the entry that's labelled Setup (In my case, it's the GUID of 899407D7-99FE-43D8-9A21-79EC328CAC51 and toward the bottom of the tree). I expanded that. Right-clicked on PE32, and hit Extract Body. That gave me an EFI file.

I then used Universal IFR Extractor (http://donovan6000.blogspot.ca/2014/02/universal-ifr-extractor.html) to convert said EFI file into a text file.

That text file should now have the DVMT values. Just do a text search for "DVMT".

For example:
0x3849A Setting: DVMT Pre-Allocated, Variable: 0x426 {05 91 E3 06 06 07 70 27 01 00 26 04 10 10 01 FE 00}
0x384AB Option: 32M, Value: 0x1 {09 07 E4 06 30 00 01}
0x384B2 Option: 64M, Value: 0x2 {09 07 E5 06 00 00 02}
0x384B9 Option: 96M, Value: 0x3 {09 07 E6 06 00 00 03}
0x384C0 Option: 128M, Value: 0x4 {09 07 E7 06 00 00 04}

The EFI variable is 0x426, and the values are those in blue.

Then, finally you can then boot with EFI Shell (https://www.firewolf.science/wp-content/uploads/2015/04/EFI-shell.zip). Just stick it onto a FAT32 formatted USB stick. In my case, I added a Boot Option via the BIOS to boot to the included bootx64.efi file.

Upon booting to the USB stick, just type in: setup_var 0x426 0x3 (to set DVMT Preallocated to 96MB).

And voila.

I follow that guide

__________________
when I plugged HDMI my TV, it working, but monitor laptop is black screen

 

[RehabMan]

I follow that guide

View attachment 218983
View attachment 218986
__________________
when I plugged HDMI my TV, it working, but monitor laptop is black screen

Does laptop screen work without HDMI active (your description of the problem is not clear)?
If not, perhaps you need to inject EDID. Read up on Clover InjectEDID and CustomEDID options.

 

[snipecaik]

This must be a very simple question, but when I download the kext files, they come as zips; from github. I just renamed then to .kext instead of .zip, is this the right way to do it? tyvm

 

[Feartech]

This must be a very simple question, but when I download the kext files, they come as zips; from github. I just renamed then to .kext instead of .zip, is this the right way to do it? tyvm

just extract them

 

[meangry]

Hi RehabMan, I tried creating a USB for my HP Probook 6550B but it's not booting to the installer, maybe due to video driver issues. Since I could not find a config file that suits my video card I chose config_HD3000_1366x768.plist, but not sure how to modify the file.

First followed GhostRaiders suggestion of removing AppleIntelHDGraphicsFB.kext, had no luck so did what you had in the guide with exactly the same result.

This is what I get when enabling verbose mode


Hoping to get some guidance from you to get this install to work.

Thank you in advance