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mkinitcpio, a program to generate initramfs on Arch Linux and related distributions dracut, another program to generate initramfs on some Linux distributions. An image of this initial root file system (along with the kernel image) must be stored somewhere accessible by the Linux bootloader or the boot firmware of the
Unlike existing Linux boot images, the Dracut framework attempts to introduce as little hard-coded logic into the initramfs as possible. [1] The initramfs has essentially one purpose: locating and mounting the real root file system so that the boot process can transition to it. [1] This functionality is dependent on device availability. [1]
Many distributions use dracut to generate and maintain the initramfs image. The root file system is later switched via a call to pivot_root() which unmounts the temporary root file system and replaces it with the use of the real one, once the latter is accessible. [14] The memory used by the temporary root file system is then reclaimed.
SliTaz GNU/Linux 1.0 is not just another small desktop distro; it is, in fact, the smallest by some margin and just half the size of Damn Small Linux. When it runs, the 25 MB compressed CD image expands to about 80 MB, so any computer with 128 MB of RAM will be able to load it fully into memory, ensuring blazing fast program execution.
In a "dual kernel" layout, kdump uses kexec to boot another kernel and obtain a memory dump. [3]: 10 In the event of a kernel crash, kdump preserves system consistency by booting another Linux kernel, which is known as the dump-capture kernel, and using it to export and save a memory dump.
Traditionally, UNIX platforms called the kernel image /unix. With the development of virtual memory , kernels that supported this feature were given the vm - prefix to differentiate them. The name vmlinux is a mutation of vmunix , while in vmlinuz the letter z at the end denotes that it is compressed (for example gzipped ).
Cpio is therefore typically used with other utilities that generate the list of files to be archived, such as the find program. The resulting cpio archive is a sequence of files and directories concatenated into a single archive, separated by header sections with file meta information, such as filename, inode number, ownership, permissions, and ...
Squashfs is a compressed read-only file system for Linux.Squashfs compresses files, inodes and directories, and supports block sizes from 4 KiB up to 1 MiB for greater compression.