GitPedia

ERAM

Open Source RAM Disk

From Zero3K·Updated June 25, 2026·View on GitHub·

ERAM v2.30 is an Opensource RAM Disk made by Hideaki Okubo (okubo at msh.biglobe.ne.jp) with the source code comments translated by Katayama Hirofumi MZ (katayama.hirofumi.mz at gmail.com) and some modifications made by me thanks to help from a member of community.osr.com. It has a size limit of 4 GB that uses page/non-paged/external RAM. You can use it for storing temp files, browser cache, etc. in order to speed up the programs that use those files. The project is written primarily in C, distributed under the MIT License license, first published in 2016. Key topics include: caching, disk, driver, eram, ramdisk.

Latest release: v2.24ERAM v2.24
November 30, 2018View Changelog →

ERAM

ERAM v2.30 is an Opensource RAM Disk made by Hideaki Okubo (okubo at msh.biglobe.ne.jp) with the source code comments translated by Katayama Hirofumi MZ (katayama.hirofumi.mz at gmail.com) and some modifications made by me thanks to help from a member of community.osr.com. It has a size limit of 4 GB that uses page/non-paged/external RAM. You can use it for storing temp files, browser cache, etc. in order to speed up the programs that use those files.

Install Instructions

  1. Download from the Releases section (available at https://github.com/Zero3K/ERAM/releases)

x86 (32-bit)

  1. Run the ERAM_x86.exe.
  2. Follow the instructions.

x64 (64-bit)

  1. Run the ERAM_x64.exe
    (you might have to run the Installer with Driver Signature Enforcement Disabled for it to install without any errors).
  2. Follow the instructions.

After installing, the RAM Disk will be available as the R: or Z: drive with a size of 1 GB (for 32-bit OSes) and 4 GB (for 64-bit OSes) which can be changed as you see fit by running eram.cpl by pressing <kbd>Win</kbd> + <kbd>R</kbd>.

Build Instructions -

  1. Download WDK (Windows Driver Kit) 7.1.0 from https://www.microsoft.com/en-us/download/details.aspx?id=11800.
  2. Extract the ISO using 7-Zip, etc. to a directory of your choosing.
  3. Run the KitSetup.exe located in the directory it was extracted to.
  4. Click Full Development Environment.
  5. Click OK.
  6. After the install has completed, you can find the Build Environments in the Start Menu in Windows Driver Kits\WDK 7600.16385.1\Build Environments.
  7. Open the proper Environment depending on what OS and CPU architecture you are building for (Only the Checked Build Environment works for now).
  8. Change the directory to the location of the source code (for example, cd C:\ERAM).
  9. Type build and press Enter.

Benchmarks -

ERAM Benchmark done on Windows 7 64-bit
ERAM Benchmark done on a Windows 7 64-bit Virtual Machine

Screenshots -

ERAM's RAM Disk Contents in a Windows 7 64-bit Virtual Machine
ERAM's RAM Disk Properties in a Windows 7 64-bit Virtual Machine

ERAM's Control Panel Applet in a Windows 7 64-bit Virtual Machine

Original Developer's Site -

http://www.vector.co.jp/authors/VA000363

Contributors

Showing top 5 contributors by commit count.

View all contributors on GitHub →

This article is auto-generated from Zero3K/ERAM via the GitHub API.Last fetched: 6/27/2026