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qcow is a file format for disk image files used by QEMU, a hosted virtual machine monitor. [1] It stands for "QEMU Copy On Write" and uses a disk storage optimization strategy that delays allocation of storage until it is actually needed.
QEMU integrates several services to allow the host and guest systems to communicate for example: an integrated SMB server and network-port redirection (to allow incoming connections to the virtual machine). It can also boot Linux kernels without a bootloader. QEMU does not depend on the presence of graphical output methods on the host system.
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The raw IMG file format is used by several tools: RaWrite and WinImage use the IMG disk image format to read and write floppy disk images. ImDisk and Virtual Floppy Drive can mount a raw image of a floppy disk to emulate a floppy drive under Microsoft Windows. Nero Burning ROM supports reading IMG files for creating bootable CDs.
QEMU w/ kqemu module Fabrice Bellard: x86, x86-64 Same as host Linux, FreeBSD, OpenBSD, Solaris, Windows Changes regularly [7] GPL/LGPL: QEMU w/ qvm86 module Paul Brook x86 x86 Linux, NetBSD, Windows Changes regularly GPL: QuickTransit: Transitive Corp. x86, x86-64, IA-64, POWER MIPS, PowerPC, SPARC, x86 Linux, OS X, Solaris Linux, OS X, Irix ...
Each screen character is represented by two bytes aligned as a 16-bit word accessible by the CPU in a single operation. The lower (or character) byte is the actual code point for the current character set, and the higher (or attribute) byte is a bit field used to select various video attributes such as color, blinking, character set, and so forth. [6]
EXIF – Exchangeable image file format (Exif) is a specification for the image format used by digital cameras GIF – CompuServe 's Graphics Interchange Format GIFV – Graphics Interchange Format Video, a format used for short, looping videos that combines the advantages of GIFs and videos, with better playback quality and lower file sizes [ 14 ]
CSS image replacement is a Web design technique that uses Cascading Style Sheets to replace text on a Web page with an image containing that text. It is intended to keep the page accessible to users of screen readers, text-only web browsers, or other browsers where support for images or style sheets is either disabled or nonexistent, while allowing the image to differ between styles.