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Questions tagged [initrd]

The initrd (Initial RAM Disk) is used to load a temporary filesystem into memory in the boot process of a linux kernel.

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Facing kernel panic issue with Yocto: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Scenario: I am working in Yocto linux project. I have created my own rootfs with tar.gz extension. And I have built linux kernel (using bitbake linux-kernel-rt). I am not able to load kernel and rootfs. Can anyone explain what can be the…
Sarveshk
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How to create an initrd.img file for liveCD for a specific kernel version

I've created a LiveCD image (.iso) of CentOS 7.2 and it works fine with the initrd.img file that I took from the http://vault.centos.org/7.2.1511/os/x86_64/images/pxeboot/ its boot up with a kernel version 3.10.0-327.el7.x86_64 However, for my…
doki.al
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Manually compiled kernel fails to boot: stuck in initramfs prompt

I am trying to compile a custom kernel for my old laptop (it's a Dell Inspiron 1525, with a Core 2 Duo processor, 2GB of memory and a HDD -- not SSD). In this computer I have 3 partitions, 2 small ones (10GB each) with the roots of distros that I…
Xito Dev
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kernel not able to run /init in initramfs in linux android 10 kernel version 4.9

I have created a custom initramfs using the below command in my custom initramfs directory: find . | cpio --quiet -H newc -o | gzip -9 -n > ../diaginitrd.img Then I built a custom bootimage with the above cpio using the command mkbootimg --kernel …
shivam seth
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yocto Linux kernel build: vmlinux and initrd creation

With a Yocto kernel build, core-image-base, qemux86_64: How do I get Yocto to generate the vmlinux (not vmlinuz) and initrd. Where can I find these when using a automated script. The script usage is in the context of a CI/CD workflow, so there…
Hedgehog
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Adding to my Linux a new device driver and its effect on initrd

I'm a newbie in the Linux environment, and I came a cross two concepts, the vmlinuz and initrd. What I understood that initrd determines which kernel-modules need to be loaded to support the current hardware, and will load them, and also, to make…
Mahmoud Emam
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Is there a way to add kexec functionality to busybox initrd?

I have 3 MB of SPI flash on my board and I am able to pack the bzImage, busybox initrd and coreboot ROM into this SPI flash. I am also able to boot to the shell , all using the ROM kernel-as-bootloader. I have bigger kernel on the USB device. I am…
Naveen
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initramfs has no modules

I have proxmox containers. Host Debian 9, inside container Debian 8. I made image to migrate into VMWare. And now I need to build my initranfs. But if i run update-initranfs -u -v -k 4.9.0-0.bpo.8-amd64 it processed but doesn't copy modules. there…
Dees7
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cpio is not working properly in repacking initrd.lz for live

If I unpack initrd.lz and then repack it without making any changes, then replace it with my new initrd.lz in Casper directory for live CD. It is structed. While packing of initrd I got a warning message as below: cpio:…
rammohan
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Custom initrd fails to mount RAM disk image

I am trying to build a minimalistic kernel and initrd image which I want to use with qemu. I am packing initrd image using cpio by, find . | cpio -oHnewc | gzip > ../initrd.img The kernel loads and mounts RAM disk image fine provided I don't keep…
Harshal Patil
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Error while Building initramfs on linux 4.4 on Amazon EC2 ubuntu instance

All, I downloaded the kernel source tree 4.4.66(from kernel.org) and trying to build the kernel and initramfs from this. Kernel built fine but initramfs is not building properly. By the I am trying this on Amazon AWS EC2 ubuntu instance…
Shivaprasad
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Mount mapped device on boot

I have a Linux system with 2.4 kernel version. I need to make a mapping device through device-mapper for root partition and mount to it at boot time. I need to use special mapper type (not a standart one like linear or mirror). So, I tried to write…
AccumPlus
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How to enable udev package in yocto recipe for initramfs build

How to enable udev package in yocto recipe for initramfs build? Please provide sample yocto bb file. Thanks
Rajeshkumar
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Change ownership in cpio archive without root

I need to add files to an initramfs file(I own the file as this is for some other device), however I do not have root permissions on my development machine. The usual way would be to unpack the initramfs, add files, change owner to root and pack…
Leonidaz0r
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init process dies on linux kernel start

I am trying to bringup kernel on a custom p2020 board. The kernel crashes with below exception. init[1]: unhandled signal 4 at 4801b9dc nip 4801b9dc lr 48002b08 code 3000 It is dying in the same way for both initrd as well as ramfs. I am using a…
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