Скачать или смотреть How to Check Drive Free Space Using PowerShell

Learn how to use PowerShell to check the free space on your selected drive and take action based on storage capacity. Get a clear explanation and example commands here!
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This video is based on the question https://stackoverflow.com/q/68788098/ asked by the user 'Shahpari' ( https://stackoverflow.com/u/16499922/ ) and on the answer https://stackoverflow.com/a/68788120/ provided by the user 'Joseph Bradshaw' ( https://stackoverflow.com/u/6175024/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Check Drive Free Space Using PowerShell: A Step-by-Step Guide

Managing disk space efficiently is crucial for any system administrator or tech-savvy user. If you're looking to monitor the free storage on your drives, PowerShell provides a powerful solution to check your selected drive configurations. In this post, we'll explore how to use PowerShell to determine the free space on a specific drive and execute commands based on this information.

The Problem

You may want to run a PowerShell command when a drive has a specific amount of free storage capacity. For instance, imagine you want to copy files from one folder to another only if there’s sufficient free space available on your drive. You may have encountered an issue with your initial attempt causing an error message that reads "objects are not the same type". This typically indicates a problem with how values are being compared in your PowerShell script.

The Solution

To solve this problem effectively, let’s break it down into clear steps:

1. Retrieve Free Space Information

We will use the Get-WmiObject (or gwmi for short) command to obtain information about the logical drives on your system. The command you need to use is as follows:

[[See Video to Reveal this Text or Code Snippet]]

Here, Win32_LogicalDisk is a WMI class that provides information about the drives.

The -Filter option allows you to specify which drive you want to query (in this case, drive D).

The Select-Object is used to fetch only the free space, which is then divided by 1GB to make it easier to understand.

2. Storing the Free Space

When you want to store the free space information in a variable for comparison, ensure that you have the right syntax. Here’s how you can do it:

[[See Video to Reveal this Text or Code Snippet]]

3. Comparing the Free Space

The key aspect of checking the value is knowing how to access the free space numeric value from the object you’ve retrieved. If you try to compare the $space variable directly, you will likely run into type mismatch errors.

Instead of this:

[[See Video to Reveal this Text or Code Snippet]]

You should modify it to correctly access the numeric value within the object by using:

[[See Video to Reveal this Text or Code Snippet]]

4. Execute Actions Based on Free Space

Now that you can accurately check the free space, you can execute commands based on the condition. For example, you can copy files if there is sufficient free space:

[[See Video to Reveal this Text or Code Snippet]]

This command copies files from C:\1\ to C:\2\ only if the available space on drive C is greater than 10 GB.

Conclusion

By following the steps outlined in this guide, you can efficiently check the free space on your selected drive using PowerShell and perform various actions based on that data. Remember to ensure you're referencing the correct properties when working with objects in PowerShell.

Happy scripting, and may your drives always have plenty of space!