NOTE: The content of the RAM disk device is lost when it is deleted or when the host turns off or reboots.


RAM disk devices can be managed via the RAM Disk tool or by using the commands for StarRAM driver that are described in this article. StarRAM driver can be installed during the RAM Disk initial configuration described here or manually as it is described in StarRAM Driver Installation section.
RAM devices can be managed via StarRAMCtl utility or via API calls to StarRAM driver using DeviceIOControl() function from the user’s C/C++ application.

SDK Components

SDK contains the following components:

  • StarRAM Windows Driver for x64 and x86 architecture.
  • “DrvInst.exe” driver installation utility
  • “StarRAMtCtl” StarRAM management utility with a source code for Visual Studio C/C++.

StarRAM Driver is installed on the target machine with DrivInst.exe utility.

StarRAM Driver Installation

Install the driver
Use the following command to install StarRAM driver:
DrvInst.exe -install root\starram <full path to StarRAM.inf file>

for example:

DrvInst.exe -install root\starram "c:\Program Files\StarWind Software\RAM Disk\StarRAM.inf"

Check if the driver is installed
Use the following command to check if StarRAM driver is installed in the system:
DrvInst.exe -check root\starram
If the driver is installed, the application returns the exit code 0.
If the driver is not present, the application returns non-zero exit code.

Update the existing driver
DrvInst.exe -update root\starram <path to StarRAM.inf file>

Remove the driver
Check that all StarWind RAM disk devices are removed from the system before removing the driver.
If devices are opened via the system or application and can’t be closed, the system should be rebooted.
Use the following command to remove StarRAM driver:
DrvInst.exe -uninstall root\starram

DrvInst.exe exit codes
0 – Operation is completed successfully. Reboot is not required.
1 – Operation is completed successfully. Reboot is required.
2 – Operation is not completed (if installation is performed, the driver exists: if checking or uninstallation is performed, the driver does not exist).
10 – Invalid command line parameters.
>10 – Other errors. In this case, please contact StarWind support.

Managing the RAM Disk devices

Using the command line application StarRAMCtl
Create RAM disk:

StarRAMCtl.exe insert #ram <Size in MB> [*]

* – create unformatted disk.

StarRAMCtl.exe insert_p #ram <Size in MB> [*]

Remove RAM disk:

StarRAMCtl.exe remove <targetId>

Get the list of RAM disks:

StarRAMCtl.exe list

Query maximum available memory, in MBs:

StarRAMCtl.exe query #ram

NOTE: To get more information about API calls to StarRAM driver, please contact StarWind support.

Request a Product Feature

To request a new product feature or to provide feedback on a StarWind product, please send an email to and put “Product Feature Request” in the subject line.

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