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Initial ramdisk. In Linux systems, initrd ( initial ramdisk) is a scheme for loading a temporary root file system into memory, to be used as part of the Linux startup process. initrd and initramfs (from INITial RAM File System) refer to two different methods of achieving this. Both are commonly used to make preparations before the real root ...
A disk image is a snapshot of a storage device's structure and data typically stored in one or more computer files on another storage device. [ 1][ 2] Traditionally, disk images were bit-by-bit copies of every sector on a hard disk often created for digital forensic purposes, but it is now common to only copy allocated data to reduce storage ...
A variant of IMG, called IMZ, consists of a gzipped version of a raw floppy disk image. These files use the .imz file extension, and are commonly found in compressed images of floppy disks created by WinImage. QEMU uses the .img file extension for raw images of hard drive disks, calling the format simply "raw".
The job of the second stage bootloader is to load the Linux kernel image into memory, and optional initial RAM disk. [12] Kernel image isn't an executable kernel, but a "compressed file" of the kernel instead, compressed into either zImage or bzImage formats with zlib. [13] In x86 PC, first- and second-stage bootloaders are combined into the ...
Linux was initially distributed as source code only, and later as a pair of downloadable floppy disk images: one bootable and containing the Linux kernel itself, and the other with a set of GNU utilities and tools for setting up a file system. Since the installation procedure was complicated, especially in the face of growing amounts of ...
Disk image. Standard. ISO 9660, UDF. An optical disc image (or ISO image, from the ISO 9660 file system used with CD-ROM media) is a disk image that contains everything that would be written to an optical disc, disk sector by disc sector, including the optical disc file system. [ 3] ISO images contain the binary image of an optical media file ...
dd is a command-line utility for Unix, Plan 9, Inferno, and Unix-like operating systems and beyond, the primary purpose of which is to convert and copy files. [1] On Unix, device drivers for hardware (such as hard disk drives) and special device files (such as /dev/zero and /dev/random) appear in the file system just like normal files; dd can also read and/or write from/to these files ...
Notable software applications that can access or manipulate disk image files are as follows, comparing their disk image handling features. ... Raw image — Linux ...