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https://github.com/vint21h/fedora-intel-remapped-nvme-device-support

Instruction and tools to build fedora custom kernel and live/installation media with kernel supporting Intel remapped NVME device
https://github.com/vint21h/fedora-intel-remapped-nvme-device-support

fedora fedora-intel-remapped-nvme intel nvme remapped-nvme

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Instruction and tools to build fedora custom kernel and live/installation media with kernel supporting Intel remapped NVME device

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README 

          
# Fedora Intel remapped NVME device support



*or how to install Fedora to laptops with Intel remapped NVME devices without possibility switch the mode to AHCI*



Contents



* [Problem](#problem)

* [Possible solutions](#possible-solutions)

* [Build a custom kernel](#build-a-custom-kernel)

* [Build custom installation media](#build-custom-installation-media)

* [Licensing](#licensing)

* [Contacts](#contacts)



## Problem



Some new laptops, like [HP ENVY 15 Laptop](https://www.hp.com/us-en/shop/mdp/laptops/envy-15-204072--1) have problem with linux installation/work.

The reason is the manufacturers use Intel Rapid Storage Technology with NVME disks and, accordingly, in the UEFI of these devices [there is no possibility to switch these drives to AHCI mode](https://h30434.www3.hp.com/t5/Notebook-Boot-and-Lockup/envy-15-2020-ahci-mode/td-p/7703443), [DELL Inspiron 7490](https://www.dell.com/community/Linux-General/Inspiron-7490-BIOS-How-to-turn-off-intel-RAID-on-and-swith-disk/td-p/7388147) have that problem too.



The modern version of the Linux kernel does not provide support for this technology in such a combination and only shows a warning to the user to change the mode of the disks.

There are two sets of patches to make these disks work, from [Dan Williams](https://marc.info/?l=linux-ide&m=147709610621480&w=2), and another one from [Daniel Drake](https://lkml.org/lkml/2019/6/20/27) based on previous, but they have not been merged into the mainline kernel.



Bad thing - both of them are not applicable for the latest kernel version.



Good thing - Daniel Drake supports his patch in [Endless OS](https://endlessos.com/) custom kernel.



## Possible solutions



* Install and use [Endless OS](https://endlessos.com/).

* Use similar instruction for [Debian/Ubuntu](https://askubuntu.com/questions/1204648/install-ubuntu-on-dell-inspiron-14-7490/1232818#1232818).

* Build Fedora custom live/installation media with a custom kernel with applied remapped NVME device support patch.



## Some pre-requirements



Another machine with Fedora, installed and configured `sudo` is required.



Also, ~40G of free disk space and ~3+ hours of free time is needed.



Setup environment variables:



```console

export FEDORA_VERSION="40"; \

export FEDORA_ARCH="x86_64"; \

export PATCH_URL="https://github.com/endlessm/linux/commit/1559f18a1b3122df5200c739963c52e21b108a9e.patch"; \

export FEDORA_KICKSTARTS_REPO_URL="https://pagure.io/fedora-kickstarts.git"

```



Or just source [set-environment.sh](setup-environment.sh) script from this repository.



```console

source set-environment.sh

```



## Build a custom kernel



* Install build tools:



    ```console

    sudo dnf install fedpkg fedora-packager rpmdevtools ncurses-devel pesign grubby

    ```



* Create working directory and enter to it:



   ```console

    mkdir fedora-custom-kernel

    ```



* Get kernel package sources:



    ```console

    fedpkg clone -a kernel

    ```



* Enter to the package source directory:



   ```console

    cd kernel

    ```



* Switch to desired fedora kernel branch:



   ```console

    git checkout -b local origin/f"${FEDORA_VERSION}"

    ```



* Install kernel build requirements:



   ```console

   sudo dnf builddep kernel.spec

   ```



* Get the latest patch from [Endless OS kernel repository](https://github.com/endlessm/linux/), it can be found by searching commit with [PCI: Add Intel remapped NVMe device support](https://github.com/endlessm/linux/commit/a2e548aaac239c9c3e79d61f5386856efaa98c4c) name.



    ```console

    wget -c "${PATCH_URL}" -O patch-intel-remapped-nvme-device-support.patch

    ```



* Update kernel package spec file (kernel.spec):



    1. Replace `# define buildid .local` by `%define buildid .local`

    2. Add `Patch2: patch-intel-remapped-nvme-device-support.patch` line after `Patch1: patch-%{patchversion}-redhat.patch`

    3. Add `ApplyOptionalPatch patch-intel-remapped-nvme-device-support.patch` line after `ApplyOptionalPatch patch-%{patchversion}-redhat.patch`



    Or using command line:



    ```console

    sed -i 's/# define buildid .local/%define buildid .local/g' kernel.spec

    sed -i '/^Patch1: patch-%{patchversion}-redhat.patch/a Patch2: patch-intel-remapped-nvme-device-support.patch' kernel.spec

    sed -i '/^ApplyOptionalPatch patch-%{patchversion}-redhat.patch/a ApplyOptionalPatch patch-intel-remapped-nvme-device-support.patch' kernel.spec

    ```



* Build source package (optional):



    ```console

    fedpkg srpm

    ```



* Build kernel packages:



    ```console

    fedpkg local

    ```



Or just use [build-kernel.sh](build-kernel.sh) script from this repository.



```console

./build-kernel.sh

```



Freshly built packages can be found in the [fedora-custom-kernel/kernel/x86_64](fedora-custom-kernel/kernel/x86_64) directory.



## Build custom installation media



* Install build tools:



    ```console

    sudo dnf install lorax fedora-kickstarts pykickstart createrepo_c screen

    ```



* Enter to the directory with freshly built kernel packages:



   ```console

    cd fedora-custom-kernel/kernel/x86_64

    ```



* Create repository metadata:



    ```console

    createrepo .

    ```



* Serve local repository with custom kernel packages:



    ```console

    screen -d -m python -m http.server 8080

    ```



* Switch to main directory:



    ```console

    cd ../..

    ```



* Create image build directory:



    ```console

    mkdir image

    ```



* Enter image build directory:



    ```console

    cd image

    ```



* Build boot image:



    ```console

    sudo sh -c 'setenforce 0 && lorax -p Fedora\ "${FEDORA_VERSION}" -v "${FEDORA_VERSION}" -r "${FEDORA_VERSION}" -s http://localhost:8080/ -s https://dl.fedoraproject.org/pub/fedora/linux/releases/"${FEDORA_VERSION}"/Everything/"${FEDORA_ARCH}"/os/ -s https://dl.fedoraproject.org/pub/fedora/linux/updates/"${FEDORA_VERSION}"/Everything/"${FEDORA_ARCH}"/ ./result/ && setenforce 1'

    ```



* Create flat kickstart file:



    ```console

    ksflatten --config /usr/share/spin-kickstarts/fedora-live-workstation.ks -o flat-fedora-live-workstation.ks --version F"${FEDORA_VERSION}"

    ```



* Update kickstart file:



    ```console

    sed -i 's#url --mirrorlist="https://mirrors.fedoraproject.org/mirrorlist?repo=rawhide\&arch=$basearch"#url --mirrorlist="https://mirrors.fedoraproject.org/mirrorlist?repo=fedora-$releasever\&arch=$basearch"#g' flat-fedora-live-workstation.ks

    sed -i 's#repo --name="rawhide" --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=rawhide\&arch=$basearch#\# repo --name="rawhide" --mirrorlist=https://mirrors.fedoraproject.org/mirrorlist?repo=rawhide\&arch=$basearch#g' flat-fedora-live-workstation.ks

    sed -i "/^# repo --name=\"rawhide\" --mirrorlist=https:\/\/mirrors.fedoraproject.org\/mirrorlist?repo=rawhide\&arch=\$basearch/a repo --name='fedora' --mirrorlist=https:\/\/mirrors.fedoraproject.org\/mirrorlist?repo=fedora-\$releasever\&arch=\$basearch" flat-fedora-live-workstation.ks

    sed -i "/^repo --name='fedora' --mirrorlist=https:\/\/mirrors.fedoraproject.org\/mirrorlist?repo=fedora-\$releasever\&arch=\$basearch/a repo --name='updates' --mirrorlist=https:\/\/mirrors.fedoraproject.org\/mirrorlist?repo=updates-released-f\$releasever\&arch=\$basearch" flat-fedora-live-workstation.ks

    sed -i "/^repo --name='updates' --mirrorlist=https:\/\/mirrors.fedoraproject.org\/mirrorlist?repo=updates-released-f\$releasever\&arch=\$basearch/a repo --name='fedora-custom-kernel' --cost=1 --baseurl=http:\/\/${HOST_IP}:8080/" flat-fedora-live-workstation.ks

    sed -i 's#part / --size=7680#part / --fstype="ext4" --size=10240#g' flat-fedora-live-workstation.ks

    ```



* Build live/installation media image:



    ```console

    sudo -E sh -c 'setenforce 0 && livemedia-creator --make-iso --iso=result/images/boot.iso --ks flat-fedora-live-workstation.ks --releasever="${FEDORA_VERSION}" --macboot --resultdir=./live/ --live-rootfs-size 10 --iso-name Fedora-"${FEDORA_VERSION}" && setenforce 1'

    ```



Or just use [build-image.sh](build-image.sh) script from this repository.



```console

./build-image.sh

```



Congratulations, you have [fedora-custom-kernel/image/live/images/boot.iso](fedora-custom-kernel/image/live/images/boot.iso).



Now you can write it to DVD or USB flash drive using [Fedora Media Writer](https://getfedora.org/en/workstation/download/) and install it.



## Licensing



fedora-intel-remapped-nvme-device-support uses the Creative Commons Attribution Share Alike 4.0 International license.

Please check the LICENSE file for more details.



## Contacts



**Author**: Oleksii Andrushevych 



For contributors list see CONTRIBUTORS file.