Software⏱️ 4 min read📅 2026-06-15

How to Fix: Why am I experiencing a checking storage configuration error while trying to install CentOS 7?

Error checking storage configuration during CentOS 7 installation. Unable to allocate requested partition scheme due to unallocated disk.

Quick Answer: Use a different disk or create a new partition manually to resolve the issue.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The 'Checking storage configuration' error occurs when the installation process is unable to automatically configure the partition scheme for an unallocated disk. This issue affects users who are installing Linux for the first time and have an unallocated disk available in their system's disk management.

This error can be frustrating, especially for beginners, as it prevents them from proceeding with the installation process. However, by following these steps, you should be able to resolve this issue and successfully install CentOS 7.

🛑 Root Causes of the Error

  • The primary reason for this error is that the installation process is unable to determine the optimal partition scheme for the unallocated disk due to its size (64GB). The 'Automatically configuration partitioning' feature relies on a specific set of rules and guidelines to allocate space for the operating system, user data, and other essential components.
  • An alternative reason for this error could be that the unallocated disk is not large enough to accommodate the required partition sizes. CentOS 7 typically requires at least 20GB for the root partition, 10GB for swap, and 5GB for the boot partition.

🚀 How to Resolve This Issue

Manually Configuring the Partition Scheme

  1. Step 1: Open the Disk Management tool in your system. This can usually be done by searching for it in the Start menu or by typing 'diskmgmt.msc' in the Run dialog box (Windows) or 'gnome-disks' (Linux).
  2. Step 2: Identify the unallocated disk and select it. Click on the 'New Partition' tab and then click on the 'Free Space' option to allocate a specific size for the partition.
  3. Step 3: Create at least three partitions: one for the root filesystem, one for swap, and one for the boot loader. The recommended allocation is 20GB for the root partition, 10GB for swap, and 5GB for the boot partition. Adjust these sizes according to your needs.
  4. Step 4: Save the changes and exit the Disk Management tool.

Using a Third-Party Partition Editor

  1. Step 1: Download and install a third-party partition editor such as GParted or parted. These tools can help you create custom partitions and allocate space more accurately.
  2. Step 2: Launch the partition editor and select the unallocated disk. Use the tool's interface to create three partitions: one for the root filesystem, one for swap, and one for the boot loader.
  3. Step 3: Adjust the allocation sizes according to your needs and save the changes.

✨ Wrapping Up

By following these steps, you should be able to resolve the 'Checking storage configuration' error and successfully install CentOS 7. Remember to carefully plan your partition scheme to ensure that you have enough space for each component.

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