What is RAM disk in Linux?
The initial RAM disk (initrd) is an initial root file system that is mounted prior to when the real root file system is available. The initrd is bound to the kernel and loaded as part of the kernel boot procedure. In the case of desktop or server Linux systems, the initrd is a transient file system.
What is RAM disk mode?
Xiaomi introduces RAMDISK for smartphones; significantly boosts game performance. RAMDISK technology is used to set aside a portion of RAM to be used as virtual storage. The advantage of using this is that the speed of RAM is significantly faster than the storage technology used in smartphones.
Is RAM in the hard drive?
However, the Random Access Memory (RAM) is temporary storage while the hard drive is the permanent computer storage, it lets you store data for a very long time, and its capacity is measured in Terabytes (TB) or Gigabytes (GB). Here is some more information on the difference between RAM and Hard Drive.
How to create a RAM disk in Linux?
RAM disk is a portion of the RAM that is mounted in your Linux as a directory. Make sure you have enough free RAM on the system so that portion of RAM can be allocated as a RAM disk. Now, Let’s create directory /mnt/ram_disk_name in your Linux. Now, mount RAM disk on it.
What’s the name of the RAM drive in Linux?
RAM disk is also known as RAM drive. It’s a portion of your RAM that are formated with a file system. You can mount it to a directory on your Linux system and use it as a disk partition.
How to deallocate a RAM disk in Linux?
To deallocate the RAM disk, unmount it and remove the brd kernel module: Alternatively, you can create a block device inside of ramfs: The truncate command creates an empty file of a given size such that it is initialized (i.e. consumes memory) on-demand.
How to make a RAM disk after boot?
To make a large ram disk after boot, with no messing around with kernel parameters, this seems to work. Use tmpfs, make a file, mount it via loop, and mount that via a filesystem: mount -t tmpfs -o size=200M tmpfs temp/ cd temp/ dd if=/dev/zero of=disk.img bs=1M count=199 losetup /dev/loop0 disk.img mkfs.ext4 /dev/loop0 mount /dev/loop0 temp2/