Gentoo genkernel download

The most common ones are added to this guide. Do not forget to enable support during boot as well. This can be done using the dolvm and domdadm options. If for some reason boot-up fails, rescuing the system by booting in the single-user mode is still possible. This will only load the really necessary services and then drop the user to a rescue root shell. The above command causes genkernel to create a kernel supporting MD raid and embed mdadm into initramfs --mdadm , both kernel and initramfs will have to be manually installed --no-install.

Gentoo is about choices. It cannot help you with creating a kernel like genkernel does. It's also worthwhile to mention that genkernel will compile most packages LVM, cryptsetup, mdadm, sshd Genkernel provides a callback for that before version 4, callback was used to rebuild external modules. In most cases, a root cause will appear like:. In other words: The system has run out of disk space No space left on device during compilation.

This page contains changes which are not marked for translation. Other languages:. Package information. Article status. This article has some todo items: Article must be updated for genkernel-4 in general Add documentation for --boot-font feature Add documentation for --bcache feature Add documentation for gk. Warning This page is a work in progress by Whissi talk contribs.

Treat its contents with caution. Note It is a common misconception that genkernel will "automatically" generate a custom kernel configuration. If a kernel configuration is not provided, genkernel will use a generic kernel configuration file which will produce a general purpose kernel suitable for daily usage at the expense of a large modular kernel.

It is not genkernel 's goal to load all available modules, to start all available devices, to unlock additional volumes, to start network or do other fancy stuff. So don't forget to set up normal boot services so that the real system can finish boot and do all of the things mentioned above. Note Some of the options have a variant that triggers a converse behavior. Note Before genkernel-4, this callback was used to trigger rebuild of out-of-tree modules.

Since genkernel-4, a dedicated command-line parameter --module-rebuild was introduced, see above. Run 'make menuconfig' before compiling this kernel? Thus, it is highly recommended to copy this file under a new name before running genkernel in order to preserve it.

If at all possible, please migrate to GRUB2 as soon as possible. This is a sample grub. Alternatively, consult the grub. Note There is no need to manually run make oldconfig when using genkernel , even if the sources are changed. This is because make menuconfig will try to load the previous configuration into the menu as much as possible. Nevertheless, reviewing each option and new sections carefully is recommended. Note Manually extraction will be difficulty if you have embedded microcode updates into initramfs.

Note Such a list will only be complete if the drivers successfully load all the required firmware s : In case a driver requires more than one firmware file but fails loading the first one, only this will be listed and thereby other required firmware filenames will be missing.

A recommended procedure to find all required firmware files is to compile the respective drivers as modules first, M in the kernel configuration, and to not have them included in the initramfs. When a system boots successfully with this method, running the above command will gather a complete list of the required firmware files.

In both cases loading the modules will be earlier and it will be successful with the availability of the firmware files in the initramfs, which must be loaded alongside the kernel e.

Stage 3. The lp64d stages can be used on all bit RISC-V processors supporting the double-precision floating point instruction set. The lp64 stages can be used on all bit RISC-V processors; they require no hardware support for floating point arithmetics. For an overview of the different instruction sets, see, e. For all other experimental downloads including for the mips architecture , please refer to the complete experimental downloads archive.

Downloads Gentoo Linux is available free over the Internet. What should I download? What do I do with these files? Gentoo Handbook If you are unsure what you need to download, please refer to the Gentoo Handbook for the complete installation documentation.

Musl stages: consider the musl overlay While the core system packages within the stage files work fine in the main gentoo repository, musl-specific fixes for additional packages can be found in the musl overlay. Of course, using short-hand notation would not do much good if this cannot translate this to the real location in the kernel configuration. The make menuconfig tool makes this possible.

This will open a search box. In short, it means a user must:. So far only general concepts and specific problems related to kernel configuration has been discussed; precise details have been left up to the user to discover. However, other parts of the Gentoo documentation collection provide specialized details for the topics at hand.

Such documents may be helpful while configuring specific areas of the kernel. Although this warning was mentioned previously in this guide, remember: users who are new to kernel configuration should not be adventurous when attempting to configure their kernels.

Start by getting a basic system up and running, support for audio, printing, etc. Getting the basics of a kernel operational will help users in later configuration steps because the user will know what is breaking their system and what is not.

It is always wise to save the base working kernel configuration in a folder other than the kernel's sources folder before attempting to add new features or hardware. It is very common for users to make a configuration change, but then make a small mistake in the process of actually booting to their newly configured kernel.

They reboot into a kernel image that is not the one they just reconfigured, observe that whatever problem they were trying to solve is still present, and conclude that the configuration change does not solve the problem. The process of compiling and installing kernels is outside the scope of this document; refer to the Kernel Upgrade Guide for general guidance. In short, the process to get a modified kernel is the following:.

It is possible to verify if the kernel that has booted matches the newly kernel compiled on the hard disk. This is performed by examining the date and time of the kernel's compilation.

The above command displays the date and time that the kernel image on the hard disk was last compiled. If the time stamps from the above commands differ by more than 2 minutes, it indicates a mistake was made during kernel reinstallation and the system has not booted from the newly modified kernel image. As mentioned earlier in this document, the kernel configuration system hides a large behavioral change when selecting a kernel component as a module M rather than built-in Y.

It is worth repeating this again because so many users fall into this trap. When selecting a component as built-in, the code is built into the kernel image bzImage. When the kernel needs to use that component, it can initialize and load it automatically, without any user intervention.

When selecting a component as a module, the code is built into a kernel module file and installed on the filesystem. In general, when the kernel needs to use that component, it will not be able to find it.

With some exceptions, the kernel makes no effort to actually load these modules — this task is left up to the user. If building support for a network card as a module, and it is discovered the network is not accessible, it is probably because the module is not loaded — either this must be done manually or the system must be configured to autoload the module at boot time. Unless a user has reason to do otherwise, some time can be saved by building these components directly into the kernel image, so that the kernel can automatically configure these small settings by itself.

This page contains changes which are not marked for translation. Other languages:. Note This guide is written with recent kernels in mind for common computer architectures. Some details may differ for older kernels or more exotic architectures; however much of the content will still be relevant. Note As mentioned earlier, libata is available even for IDE drives. There is no need to do any further checking or configuration.

Note This limitation is specific to the x86 IA32 architecture. Other architectures naturally support large amounts of memory, with no configuration tweaks required. Tip Notice the number in parenthesis; users can jump to that option, or as close as possible for enabled menus, by pressing the number while in the search. In the above example, pressing 1 on the keyboard will jump to or near that option.