ASUS Bootable Volume Not Mounting – How to Solve This Issue

Are you also getting the "Blue Screen of Death" with a stop code showing "UNMOUNTABLE_BOOT_VOLUME" on your Asus laptop ? When you encounter this error, your device's operating system is unable to mount or access the boot drive. This issue can also occur on other brands like Lenovo, HP, Dell, and so on. Thus, you'll need to find a specific solution for your particular computer to fix this error.

To assist you with the Asus boot volume not mounting issue, this guide from Tool presents four straightforward solutions, along with appropriate guidance. Furthermore, you'll learn about some primary reasons that cause this error on your computer. So, let's delve into the details without further ado.

What Causes Asus Unmountable Boot Volume?

When people encounter a technical glitch, they often want to know what caused it. And rightly so: understanding the problem is the first step to fixing it. So, before proceeding with any repairs, you should try to identify the root cause of the error. Here are some of the main reasons why an operating system might generate this message:

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ASUS Bootable Volume Not Mounting (4 Solutions)

We've already discussed the prime reasons behind the inability to mount the boot volume due to system errors or user negligence. Well, regardless of the cause, you need a solution to get over it. So now, it's time to learn four quick fixes to get rid of this annoying error.

1. Solution 1. Rebuild the Master Boot Record
2. Solution 2. Run SFC Scan and CHKDSK
3. Solution 3. Run Startup Repair
4. Solution 4. Run the Boot Repair Tool

Solution 1: Rebuild the Master Boot Record

Rebuilding the Master Boot Record (MBR) can fix an unmounted boot volume. All versions of Windows automatically create the MBR in the first sector of a disk. Therefore, if the system hard drive or external drive is corrupted, you cannot restart your system. In this case, you need a tool to rebuild MBR, and here, Partition Master Professional can help.

Fortunately, if your hard drive's Master Boot Record is damaged, this tool can rebuild it and get you back into your system. It even offers various solutions for all kinds of system failures under any Windows version. It's time to learn how to use this tool to rebuild the Master Boot Record (MBR) step by step.

Step 1: Create a bootable WinPE disk

• Launch Partition Master, and click “Bootable Media Builder” on the toolbar. Choose “Create Bootable Disk”. • Click “Next” to finish the process.

Create a boot disk

Step 2: Boot the Partition Master Live USB

Plug in the bootable USB or CD/DVD to your computer. Restart your computer and press F2 or Del to enter BIOS. Set it to boot from “Removable Device” or “CD-ROM Drive.” The Partition Master tool will run automatically.

Step 3: Rebuild the MBR

Click “Toolbox” and select “Rebuild MBR”.

Rebuild MBR

Select the disk and MBR type, then click “Rebuild”.

Then you'll see “MBR on Disk X successfully rebuilt.”

As you can see, it serves as a direct solution for reinstalling the system Windows. Additionally, it offers a time-saving and secure method with a high success rate. Overall, this tool provides advanced features to address MBR issues and regain access to your computer.

Solution 2: Run SFC Scan and CHKDSK

SFC (System File Checker) and CHKDSK are command-based solutions that help scan and resolve issues with advanced Windows options. You can also use these direct commands to fix the Asus boot volume not mounting error. The SFC scan command allows scanning all protected files and replaces corrupted ones to resolve the unmountable issue.

Meanwhile, the CHKDSK command scans your system hard drive for errors and repairs bad sectors. You can access the Command Prompt and use these commands in the following way:

Step 1: First, turn on your computer and press the "F8" key repeatedly until you see the "Choose an option" screen. On that screen, select the "Troubleshoot" option.

Step 2: Next, select "Advanced options" from the provided choices. On the following screen, you'll see various advanced options. From there, choose "Command Prompt" to proceed and enter your command.

Step 3: Type sfc /scannow in the Command Prompt and press Enter to scan for and identify corrupted files.

Step 4. Type chkdsk /r /f and press "Enter". The /r switch with the command scans for and attempts to recover readable files, while the /f switch allows it to fix errors on the disk.

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Solution 3: Run Startup Repair

Running a Startup Repair is another preferred method to avoid errors on an Asus laptop. It can diagnose and fix issues with starting up. If you can't access this feature directly, insert your Windows installation media and boot your <a href="/partition-master/boot-asus-laptop-from-usb.html">Asus laptop from a USB or CD</a> to access this option.

These steps describe the direct way to run the automated repair:

Step 1: Turn on your computer and repeatedly press the "F8" key to enter the "Choose an option" screen. On the screen, select "Troubleshoot," then choose "Advanced options."

2. Next, navigate to the Advanced options and select “Startup Repair” to fix issues preventing Windows from loading.

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Solution 4: Run the Boot Repair Tool Boot Repair is a utility designed to fix boot issues in Ubuntu and other Debian-based systems. If you encounter GRUB bootloader problems during installation, this tool might be helpful. Here's how to use Boot Repair: 1. **Create an Ubuntu Live USB/DVD:** First, you'll need an Ubuntu ISO image and a USB drive or DVD to create a bootable medium. Visit the [Ubuntu download page](https://ubuntu.com/download) for the ISO and use a tool like Rufus (Windows) or Etcher (cross-platform) to write it to the USB. 2. **Boot into the Ubuntu Live Environment:** Restart your computer and boot from the USB/DVD. In the boot menu, select "Try Ubuntu" or the "Ubuntu with Linux" option. 3. **Open the Terminal:** In the live environment, open the terminal. You can do this by pressing the `Ctrl` + `Alt` + `T` keyboard shortcut. 4. **Install Boot Repair:** In the terminal, enter the following commands to install Boot Repair: ``` sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt-get update sudo apt-get install -y boot-repair ``` 5. **Run Boot Repair:** After installation, run Boot Repair with the following command: ``` boot-repair ``` 6. **Follow Boot Repair's Instructions:** Boot Repair will open a graphical interface. Click on the "Recommended Repair" button, and it will perform a series of repair actions. Note down the displayed URL (this will serve as a log) and wait for the program to finish. 7. **Reboot Your Computer:** Once the repairs are complete, restart your computer. Your GRUB bootloader should now be fixed. If Boot Repair doesn't resolve the issue, you may need to investigate further boot-related problems or consider reinstalling the operating system.

Aside from the solutions above, Partition Master also provides another solution that can fix the Asus unmountable boot volume error in seconds. It comes with an advanced Boot Repair feature that helps you solve all Windows boot issues.

This tool is capable of fixing Blue Screen, White Screen, Yellow Screen and Black Screen errors and all other Windows errors. In short, it has become one of the top recommended solutions for Hard Disk Repair.

If you continue to experience blue screens after trying all of the above, refer to the comprehensive Boot Repair Guide and work through the steps one by one.

Step 1. Connect the external drive/USB to the PC, launch AOMEI Partition Assistant, and then select "Bootable Media", and click "Create Bootable Media".

Step 2: Choose a USB drive or CD/DVD that you have available, and click Create. You can also burn the Windows ISO file to media.

Create Bootable Disk with Partition Wizard Tool

Step 3. Connect the bootable drive to the new computer and press F2 or Del to enter BIOS. Set the WinPE bootable drive as the boot disk, then press F10 to exit.

Step 4. Restart your computer and enter the WinPE interface. Then, open Partition Master and click “Boot Repair” under “Toolbox”.

Step 5: Select the system you want to repair, then click Repair.

Click the "Repair your computer" button.

Step 6: Wait for the message that says the process was successful. Click "OK" to finish the startup repair.

In addition, the utility helps manage BCD and UEFI menus, and lets you preview all changes before applying them.

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Last Words

If you have the right solutions, the unmountable boot volume Asus error is not a big deal. Hence, we provide you with 4 simplest solutions to fix the error and restart your computer. However, using the Partition Master tool is the most recommended method, which features advanced Boot Repair and MBR rebuilding functions to fix Windows boot errors.

Moreover, you now have an understanding of the underlying causes that lead to this error. Hence, endeavor to avoid them to ensure smooth functioning of your computer.

Frequently Asked Questions about the ASUS Bootable USB Drive

We encourage people to become knowledgeable about system errors and how to fix them with simple solutions. Here are some common user questions about this issue.

1. Can I repair a boot volume that can't be unmounted?

Yes, of course. Unbootable disk errors can be fixed with valid methods. You can try rebuilding MBR, running SFC scan and CHKDSK command lines, or use professional boot repair tools like Partition Master to solve these issues.

2. How do I force my ASUS computer to enter BIOS?

To force your Asus system to enter BIOS, just follow these simple steps in order:

• If your Asus computer is on, turn it off before proceeding.
• Hold down the "F2" key on your keyboard, then press the "Power" button.
• Hold down F2 until the BIOS setup screen appears.

Why does my Asus laptop get stuck on a blue screen?

An ASUS device can get stuck on a blue screen due to various hardware or software-related issues. Specifically, these may include corrupted system files, incorrect BIOS configuration, boot driver errors, and damaged RAM or disk.