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Configure Volume Mapping for EC2 Windows – How to do it?

by | Aug 31, 2021

Wondering how to Configure Volume Mapping for EC2 Windows? We can help you.

Recently, one of our customers wanted to configure and view his current volume mapping on his instance.

Here, at Bobcares, we assist our customers with several AWS queries as part of our AWS Support Services.

Today, let us see how to perform this configuration for EC2 Windows.

Configure Volume Mapping for EC2 Windows

Our customer had an Amazon Elastic Compute Cloud Windows Server 2016 instance.

He wants to configure and view the current volume mapping on the instance to have a fixed drive letter in the operating system.

1. To do so, first, we connect to the instance.

2. Then we open the File Explorer and select This PC.

The disk must be online and have a label on it.

3. After that, we note the volume name that we want to assign the drive letter to.

The configuration requires a unique name for each drive. If the drive letter is already in use, the mapping will fail.

In addition, It is possible for the EC2Launch to initialize drives that aren’t already initialized and partitioned.

Moving ahead let us see the steps for Windows Server 2016 and later:

4. We, open the C:\ProgramData\Amazon\EC2-Windows\Launch\Config\ file.

Then we edit the DriveLetterMappingConfig.json file with any of the available text editors.

For example, here we assign the letter D to Backup volume and the letter E to Logs volume:

"driveLetterMapping": [
"volumeName": "Backup",
"driveLetter": "D"
"volumeName": "Logs",
"driveLetter": "F"

5. To launch the EC2Launch script to initialize the disks, we run the following command in Windows PowerShell:


Then we add the -Schedule flag to initialize the disks each time the instance boots, like this:

C:\ProgramData\Amazon\EC2-Windows\Launch\Scripts\InitializeDisks.ps1 -Schedule

Eventually, the new mappings are set.

[Need help with the configuration? We are here to assist you]


To conclude, we saw a customer with Amazon Elastic Compute Cloud Windows Server 2016 instance. This sums up how our Support Techs configure Volume Mapping for EC2 Windows.


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