Software⏱️ 3 min read📅 2026-06-11

How to Fix: VBoxManage: error: Cannot read the partition information from '/dev/disk0'

Error fixing VBoxManage issues with creating .vmdk file for Virtual Box.

Quick Answer: Check disk permissions and ensure correct partition information is used when creating the .vmdk file.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. ✅ Best Solutions to Fix It
  3. 🎯 Final Words

The error 'Cannot read the partition information from '/dev/disk0'' occurs when attempting to create a raw disk vmdk file using VBoxManage. This issue affects users who are trying to convert their Boot Camp partition into a virtual machine with Virtual Box.

This error can be frustrating, especially for those who have invested time in setting up their Boot Camp partition. However, by following the steps outlined below, you should be able to resolve this issue and successfully create a raw disk vmdk file.

💡 Why You Are Getting This Error

  • The primary reason why this error happens is due to incorrect permissions on the device node '/dev/disk0'. When VBoxManage attempts to read partition information from this node, it requires elevated privileges. If the permissions are not set correctly, the command will fail with an error message.
  • Another possible cause of this error could be if the device node '/dev/disk0' is not properly mounted or if there are any issues with the disk itself.

✅ Best Solutions to Fix It

Resolving Incorrect Permissions

  1. Step 1: First, you need to change the permissions of the device nodes '/dev/disk0' and '/dev/disk0s4'. You can do this by running the following command: `sudo chmod 0777 /dev/disk0` and `sudo chmod 0777 /dev/disk0s4`. This will ensure that the user running VBoxManage has read, write, and execute permissions on these nodes.
  2. Step 2: After changing the permissions, you can try creating the raw disk vmdk file again using the command: `VBoxManage internalcommands createrawvmdk -filename WinXP.vmdk -rawdisk /dev/disk0 -partitions 4`. If this step still fails, proceed to the alternative method.

Alternative Method Using Disk Utility

  1. Step 1: If the above method does not work, you can try using Disk Utility to create a raw disk vmdk file. First, open Disk Utility and select the Boot Camp partition from the list of available disks. Then, click on the 'Create Image' button in the top menu bar.
  2. Step 2: In the 'Create Image' dialog box, select 'Raw VMDK Disk Image' as the format and set the size to match the size of your Boot Camp partition. Click 'OK' to create the raw disk vmdk file.

🎯 Final Words

To resolve the error 'Cannot read the partition information from '/dev/disk0'', you can try either changing the permissions of the device nodes or using Disk Utility to create a raw disk vmdk file. By following these steps, you should be able to successfully convert your Boot Camp partition into a virtual machine with Virtual Box.

Did this fix your problem?

If not, try searching for specific error codes.

🔍 Search Error Database

❓ Frequently Asked Questions

🛠️ Related Fixes

How to Fix: Pc crashes shortly after launching game (rainbow

Fix Pc crashes shortly after launching game (rainbow six siege). Compl

How to Fix: Installing an APK on a locked down phone

Installing an APK on a locked down phone: Try using a rooted device, e

How to Fix: New PC build- no signal and no clue

Fix New PC build- no signal and no clue. Complete troubleshooting guid