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On Sunday, 10 April 2022 14:58:26 BST Серега Филатов wrote: |
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> If it's a similar laptop I assume you have grub2 installed in EFI mode. |
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> Check if you have grubx64.efi in your EFI partition (usually /<mounted EFI |
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> partition>/EFI/gentoo/). |
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> Also check if you have efi boot entry for grub with efibootmgr utility. if |
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> grub-install with EFI target was used on a new system it should call |
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> efibootmgr to add a Gentoo entry in UEFI). |
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> |
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> If you are trying to install grub in legacy mode then look in UEFI settings |
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> if CSM or legacy boot is enabled. But since you have win11 and you want |
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> dual boot I don't think that it's what you want. Os-prober will not pick up |
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> EFI win11 installation if grub is installed in legacy and you can't install |
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> win11 in legacy since Microsoft made win11 UEFI-only. |
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Some UEFI firmware is buggy and may not pick up a new OS bootloader in the ESP, |
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at least not pick it up initially. In these cases temporarily changing a UEFI |
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setting to nudge the firmware to parse the ESP for boot menu entries will help. |
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So /should/ running the efibootmgr to create an entry with grub's efi image. |
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