In Unix-like operating systems, a loop device, vnd (vnode disk), or lofi (loop file interface) is a pseudo-device that makes a computer file accessible as a block device.
Before use, a loop device must be connected to an extant file in the file system. The association provides the user with an application programming interface (API) that allows the file to be used in place of a block special file (cf. device file system). Thus, if the file contains an entire file system, the file may then be mounted as if it were a disk device.
Files of this kind are often used for CD ISO images and floppy disk images. Mounting a file containing a file system via such a loop mount makes the files within that file system accessible. They appear in the mount point directory.
A loop device may allow some kind of data elaboration during this redirection. For example, the device may be the unencrypted version of an encrypted file. In such a case, the file associated with a loop device may be another pseudo-device. This is mostly useful when this device contains an encrypted file system. If supported, the loop device is in this case the decrypted version of the original encrypted file and can therefore be mounted as if it were a normal file system.
systems, a loopdevice, vnd (vnode disk), or lofi (loop file interface) is a pseudo-device that makes a computer file accessible as a block device. Before...
intrauterine device (IUD), also known as intrauterine contraceptive device (IUCD or ICD) or coil, is a small, often T-shaped birth control device that is inserted...
up loop in Wiktionary, the free dictionary. Loop or LOOP may refer to: Loop (mobile), a Bulgarian virtual network operator and co-founder of Loop Live...
Live looping is the recording and playback of a piece of music in real-time using either dedicated hardware devices, called loopers or phrase samplers...
back, this proves that the circuit is functioning. A hardware loop is a simple device that physically connects the receiver channel to the transmitter...
A Lebanese loop is a device used to commit fraud and identity theft by exploiting automated teller machines (ATMs). In its simplest form, it is a strip...
In electrical signalling an analog current loop is used where a device must be monitored or controlled remotely over a pair of conductors. Only one current...
films in which time loops are a prominent plot device. For a list of films that include any kind of time travel (including time loops) see time travel in...
The time loop or temporal loop is a plot device in fiction whereby characters re-experience a span of time which is repeated, sometimes more than once...
device. This is accomplished by making use of a loopdevice, a pseudo device that enables a normal file to be mounted as if it were a physical device...
processors, loop unrolling is often counterproductive, as the increased code size can cause more cache misses; cf. Duff's device. The goal of loop unwinding...
user input or device activity, so at some fundamental level there is an infinite processing idle loop that must continue until the device is turned off...
mechanism, exposing block devices as NVMe namespaces over TCP, Fibre Channel, RDMA, &c., native to most operating systems Loopdevice: a similar mechanism...
sound-emitting device of some sort, so that when the loop and the wire touch, the light-emitting device will light up, and the sound-emitting device will make...
interface device (NID; also known by several other names) is a device that serves as the demarcation point between the carrier's local loop and the customer's...
a feedback loop, the output of a device, process or plant is sampled and applied to alter the input, to better control the output. The loop gain, along...
The arbitrated loop, also known as FC-AL, is a Fibre Channel topology in which devices are connected in a one-way loop fashion in a ring topology. Historically...
A control loop is the fundamental building block of control systems in general and industrial control systems in particular. It consists of the process...
devices such as transistors and FETs are also used in negative resistance oscillators. At high frequencies these devices do not need a feedback loop,...
such as for USB devices). Makedev includes a list of the devices in Linux, including ttyS (terminal), lp (parallel port), hd (disk), loop, and sound (these...
Loopback device may refer to: Loopback, related to electronic communication interfaces Loopdevice, a pseudo-device in Unix-like operating systems This...
compressed loopdevice (cloop) is a module for the Linux kernel. It adds support for transparently decompressed, read-only block devices. It is not a...
is fed back to the input. A device is said to be operating open loop if no output feedback is being employed and closed loop if feedback is being used....
Shwartsman, Stanislav (eds.). "8.8. Mounting a disk image using the loopdevice". Bochs User Manual. Retrieved 1 March 2016. "MagicISO Features - ISO...
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