The driver detected a controller error on \Device\Harddisk1\DR1

Hello to everyone, I Just want to confirm something,
I'm using Windows 7 Ultimate 32bit and not encountering any freezing nor BSOD, but everytime I check the EVENT VIEWER it annoys me to see the error message "The driver detected a controller error on \Device\Harddisk1\DR1" ... I check the disk manager and from what I see in there my primary harddisk is located in channel0/Disk 0 while Disk1 is from my removable USB flash drive.
Does that mean the one mentioned in the EVENT was just actually my flash drive? Why was it called a harddisk???

Please someone confirm this for me because I'm getting paranoid if my harddisk is already starting to fail.

Thanks for any helpful reply...

urusai11 said:

Hello to everyone, I Just want to confirm something,
I'm using Windows 7 Ultimate 32bit and not encountering any freezing nor BSOD, but everytime I check the EVENT VIEWER it annoys me to see the error message "The driver detected a controller error on \Device\Harddisk1\DR1" ... I check the disk manager and from what I see in there my primary harddisk is located in channel0/Disk 0 while Disk1 is from my removable USB flash drive.
Does that mean the one mentioned in the EVENT was just actually my flash drive? Why was it called a harddisk???

Please someone confirm this for me because I'm getting paranoid if my harddisk is already starting to fail.

Thanks for any helpful reply...

Yes it is the USB

Called an HD as a throw back to when PC's had floppy drives.

I have the same problem. In my even viewer it says "The driver detected a controller error on\Device\Harddisk1\DR1"
This error appears about 15 times a day. I dont have anything wrong with my computer at the moment and I am worried that this is going to cause a problem or already is a problem. What could it be and how do I stop it?

It could be a few things. You may have a bad connection to and from one of your hard disks. If you open up Start Menu -> Computer -> Right click on the C: drive -> Click Properties -> Click the Hardware tab -> And see which device has location 1, that will indicate where the problem lies. Post a screenshot of the hardware with location 1.

Thank you for your reply and trying to help me. I have done as you said and It is the actual Internal Harddisk drive which is in Location 1. It is called ST3500418AS 500Gb. It also says that this device is working properly. Why do I keep getting these errors in event manager?
Could this be a possible cause as to why I cant do any back ups, it always times out and says back up not successfull?

Possibly. Do you have any exclamation points/error icons in Device Manager? To get to Device Manager: Log in as an administrative user -> Start Menu -> Control Panel -> Hardware and Sound -> Device Manager

Also, please update your system specs in your profile (not in a post in this thread). System Info - See Your System Specs will help with filling in your system specs. If you have a computer built by a vendor, also include the name of the vendor (HP, Dell, Sony, Toshiba, Lenovo, Acer, ASUS, etc.) and the model of the system.

I have no exclamation marks in my Device manager.

I have updated my system spec I hope this helps. Thankyou for taking the time to help me out.

I had fifteen error events again today. Its bizarre!

Ah, there we go. You have an Acer system. What model?