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What is a swap disk?

Updated: 10/27/2022
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16y ago

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Swap disks are commonly used in Unix based operating systems and are inaccessible areas of disk used for the system to store data temporarily. In Windows it is known as "Virtual Memory". Windows stores its swap data in a file on the main partition instead of using a whole separate partition. Newer distributions of Linux have also started to adopt this method as it is easier to configure, more flexible, and arguably neater than using a separate partition.

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Q: What is a swap disk?
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Related questions

Where swap space reside?

It resides in the Disk(hard disk).


Where does the swap space reside?

It will reside in the hard disk


What is cog-swap?

Cog-swap is an ELF program which allows it's user to fool the PlayStation 2's copy-protection code. The PS2 checks a loaded disk at boot-time to see if it is an authentic, "pressed", disk with a valid Table of Contents and such. Cog-swap work by loading the validation information from an authentic disk, then freezing the process to load a burned backup disk.


What is COGS?

Cog-swap is an ELF program which allows it's user to fool the PlayStation 2's copy-protection code. The PS2 checks a loaded disk at boot-time to see if it is an authentic, "pressed", disk with a valid Table of Contents and such. Cog-swap work by loading the validation information from an authentic disk, then freezing the process to load a burned backup disk.


What are SWAP files used for?

A disk file used to temporarily save a program or part of a program running in memory


Which partitions does Linux use when all the information that Linux is processing cannot be stored in RAM?

That is the "swap partition." It is a dedicated space on the hard disk that fulfills the "swap" feature of virtual memory in Linux.


How many min patitions are require ti install Linux os and what r they?

If you have plenty of RAM: 1, as a swap partition is rarely used by Linux on systems with more than 2 or 3 GiB of RAM available, and all the toplevels of the Linux directory structure can be put on the same partition. A swap partition on a system with plenty of RAM is a waste of hard disk space. If you're strapped for memory, 2, to allow for the swap partition, so that Linux can extend its memory onto the hard disk so you won't run out. A good rule of thumb is to create a swap partition at LEAST 1.5 times larger than your system RAM. For example, if you have 512 MiB of RAM: a 768 MiB MINIMUM swap partition is advised. If you have lots of hard disk space, an ideal consideration is actually to triple your RAM in swap space: 512 MiB of RAM will be supported by a 1.5 GiB swap partition. Personally, if you have lots of hard disk space, I recommend at least 3: One for /, one for /home, and one for swap, if needed, otherwise it'll be for /boot.


What hard disk drive partition does the Linux kernel use to store pages from ram?

Linux swap partition has the code 82 (hex). A swap partition must be formatted with mkswap before first use. You can use swapon and swapoff utilities to enable/disable swap


What is the difference between swap and virtual memory?

Swap slices are used as virtual memory storage areas when the system does not have enough physical memory to handle current processes. The virtual memory system maps physical copies of files on disk to virtual addresses in memory. Physical memory pages which contain the data for these mappings can be backed by regular files in the file system, or by swap space. If the memory is backed by swap space it is referred to as anonymous memory because there is no identity assigned to the disk space backing the memory.


Is there a freeloader for the PS2?

No there is no Freeloader for the Play Station 2. However there is a disk called the Swap Magic That produces the same results, giving it the ability to play Imports, and boot files from a hard disk to name some.


How do you install Mandriva Linux and Windows XP on a single Hard Disk Drive?

Boot into Mandriva and shrink your XP partition to a reasonable size, then format the remaining space, minus a few GB, with ext4, and the few GB left over, format as 'swap'. You can do all this with gparted (I THINK that's included on the disk by default - if not you can download and install it from their repositories). Then on installation just install the data onto the ext4 and register the swap partition as well...swap


Why does your hard disk say it is full when it isn't?

Answer: Most likely because of swap-file. Swap-files are used by windows to supplement your systems RAM. No matter how much RAM you have, its never enough for windows, so it takes chunks of your hard disk and uses them for short-term storage for stuff its currently working on. If you have a lot of programs running in the background this can take over a gigabyte of hard disk space easily. When displaying hard disk free space, windows doesnt take swap-files into account & thus it may show as having free space when in fact there isnt. For the health of your hard disk, and to ensure good system performance, it is a good rule of thumb to always keep at least 10% free space on your hard disk. Filling it up to 99% or 100% can often cause data corruption.