linux | bash - create and mount ram disk

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sudo mount -o size=PUT_SIZE_HERE -t tmpfs none /path/to/mount-directory


# Where:
#     `-o size=PUT_SIZE_HERE`     indicates RAM disk size in bytes, kilobytes, megabytes or gigabytes, e.g. x, xK, xM or xG,
#     `-t tmpfs`                  indicates used `tmpfs` as file system (it is very fast),
#     `none`                      indicates mount device that is not set in this case,
#     `/path/to/mount-directory`  indicates place where RAM disk is mount.


# Hint: to unmount RAM disk use `sudo umount /path/to/mount-directory` command.



# ----------------------------------------------------------------------------------------
# Practical example (10GB RAM disk mount in /mnt/RAM directory):
# ----------------------------------------------------------------------------------------

sudo mkdir /mnt/RAM
sudo mount -o size=10G -t tmpfs none /mnt/RAM

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sudo modprobe brd rd_nr=1 rd_size=PUT_SIZE_HERE
sudo mkfs.ext4 -q /dev/ram0
sudo mount /dev/ram0 /path/to/mount-directory


# Where:
#     `modprobe`                      creates `/dev/ram0` block device in the above case,
#         `brd`                       indicates `block RAM disk` module,
#         `rd_nr=1`                   indicates number of created block RAM disks, so only `/dev/ram0` disk will be created,
#         `rd_size=PUT_SIZE_HERE`     indicates size of created block RAM disk measured in kilobytes,
#     `mkfs.ext4`                     foramts `/dev/ram0` block device using ext4 file system in the above case,
#         `-q`                        indicates quick formatting mode,
#         `/dev/ram0`                 indicates used block device,
#     `mount`                         mounts `/dev/ram0` block device inside `/path/to/mount-directory` directory in the above case,
#         `/dev/ram0`                 indicates used block device,
#         `/path/to/mount-directory`  indicates place where RAM disk is mount.


# Hint: to unmount RAM disk use `sudo umount /path/to/mount-directory` command.



# ----------------------------------------------------------------------------------------
# Practical example (10GB RAM disk mount in /mnt/RAM directory):
# ----------------------------------------------------------------------------------------

sudo modprobe brd rd_nr=1 rd_size=$((10 * 1024 * 1024))
sudo mkfs.ext4 -q /dev/ram0
sudo mkdir /mnt/RAM
sudo mount /dev/ram0 /mnt/RAM