Hello, I have Lenovo yoga c740-15iml 81td
i5-10210U
12GB Ram
and I try to install bug Sur Using this EFI but was stuck on MACH Reboot please Help.
Please Help
Lenovo Yoga C740 Stuck on MACH Reboot
- hanykamal
- Erledigt
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Hi,
You will probably need to re-create ACPI files since probably your specs differ compared to the other one.
I started refreshing the EFI for Monterey for this laptop but didn't finish yet, I'll post it here as soon as I have something.
Cheers
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hello hanyang ,
if you are able to use the searchengine of your choice , there will be some resulsts, for example
- https://github.com/ThrRip/Open…op-Lenovo-YOGA-C740-14IML
- https://github.com/2Sea-cat/C740-14iml-BigSur
- https://github.com/frozenzero1…op-Lenovo-Yoga-C740-14IML
of course the factor of teach, how to help yourself, maybe would not match..,
in this case consider the dortania guide if you like opencore- https://dortania.github.io/OpenCore-Install-Guide/
...
greetings
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No I have not taken the SSDT
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Try it first with the EFI only, if it doesn't boot then post the log you find on the USB stick.
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hello Sir, i tried the the EFI you send me and stuck on this page
Please advide
opencore-2022-02-28-205014.txt
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Please do a nvram reset , you can find it in the OpenCore menu
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Hello, I can't find NVRAM Reset, I didn't even install Catalina yet, it's stuck on the USB Boot, please check the attached images, also while I'm searching on google I found "unlock CFG" do I need to do that for my Lenovo C740.
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try again with the nvram reset
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'll redo the OpenCore EFI again for security reasons, that will probably be nothing more today.
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This is my EFI for the C740. I'm not sure how well it is working, I think sleep still does not so you will also probably have to adopt it to your needs, as it is a different model. I strongly advise you to deactivate pcidevices.aml as it probably doesn't fit to your laptop.
Unpack the EFI with Keka. You might have to rename them to EFI.zip.001 and EFI.zip.002
It will probably not work but this is the most I can do at the moment.
Cheers
