Access Denied when trying to enter chkdsk /r after encountering error "The device, \Device\Harddisk0\DR0, has a bad block."

Question

Upon following instructions of another thread to remedy crashes caused by bad block errors, it says

"Access Denied as you do not have sufficient privileges or

the disk may be locked by another process.

You have to invoke this utility running in elevated mode

and make sure the disk is unlocked." 

in command prompt after I enter the chkdsk /r command.

How do I gain sufficient privileges as the sole administrator and user of my computer? Or  invoke this utility running in elevated mode? or make sure the disk is unlocked? 

Thanks

Answer 1

Hi Evan. I'm Greg, an installation specialist and 9 year Windows MVP here to help you.

Run Disk Check here https://www.groovypost.com/howto/check-hard-dri... from the Command Prompt in Repair mode, accessed by one of these methods: https://www.tenforums.com/tutorials/2294-advanc...

If it fails then Test the hard drive with diagnostics: https://www.lifewire.com/free-hard-drive-testin.... Best is Seatools bootable Long Test which works on all models:

http://blog.nowherelan.com/2013/04/04/boot-seat....

https://www.seagate.com/manuals/software/seatoo...

If the drive is failing, I'd replace it with an SSD which is the best Upgrade one can have - lightning fast, faster than a new higher-end PC without one, especially if you do the gold standard Clean Install in this link which compiles the best possible install which will stay that way as long as you stick with the tools and methods given, has zero reported problems, and is better than any amount of money could buy: http://answers.microsoft.com/en-us/windows/wiki...

If the drive is OK then you'll need to get Disk Check to run so that it fixes the file system. It may be necessary to create bootable media to access Repair Mode or do the Clean install since it relies on it's own files and drivers and not those onboard WIndows that may already be corrupted.

To create Windows 10 Installation Media on another PC install Media Creation Tool and follow the directions here: http://windows.microsoft.com/en-us/windows-10/m.... Uncheck the box for Recommended Settings to choose the exact version and bit rate for the target PC only.

Insert media, boot it by powering up PC while pressing the BIOS Boot Menu Key: https://www.sysnative.com/forums/hardware-tutor...

If the media won't boot you may need to enter BIOS/UEFI Setup (pressing key given in chart in link above) to turn off Fast Boot or Fast Startup first.

Choose the boot device as a UEFI device if offered, on second screen choose Repair Your Computer, then Advanced Troubleshoot Options, then Command Prompt to run Disk Check.

If you need to rescue your files you can try this method: http://answers.microsoft.com/en-us/windows/wiki...

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.

______________________________________________

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Answer 2

Hi Evan

My name is Andre Da Costa; an Independent Consultant, Windows Insider MVP and Windows & Devices for IT MVP. I'm here to help you with your problem.

I would try initiating the chkdsk from within the recovery environment.

Power on and off your computer three times

On the third time, your computer will boot into the Advanced Recovery environment

Click Advanced Options

Click Troubleshoot

Click Advanced Options

Click Command Prompt

At the same command prompt, type the following then hit Enter:

C:> chkdsk /F /R /X C: