4 Posts

November 7th, 2013 17:00

Eureka - fixed!

Once I restored the PC to the factory image (again), I opened a command prompt (run as administrator).

  • Type bcdedit

The resulting display showed the following

  • Under Boot Manger,  device = unknown
  • Under Boot Loader, device = unknown & osdevice = unknown.

Entered the following commands

  • bcdedit /set {bootmgr} device partition=c:
  • bcdedit /set device partition=c:
  • bcdedit /set osdevice partition =c:

Running the bcdedit command again shows that these 3 parameters are now set to c:    Have rebooted successfully severall times now and proceeding with recovering my files from backup.  (I use windows backup) .

4 Operator

 • 

34.2K Posts

November 7th, 2013 14:00

Hi MikeYuinny,

Boot to the BIOS and check your hard drive controller. If you have the option, set it to ATA, then reboot.

4 Posts

November 7th, 2013 16:00

Tried it; booted to BIOS and changed hard drive controller to ATA but no change.  Still getting the same error.

1 Message

October 7th, 2018 19:00

MikeyUinNY,

You are my absolute freaking hero.  With your help I now have a working Laptop. It's been a boat anchor for dang near two years. If you're ever in the Portland Oregon area, I will buy you a beer. Luckily I noticed the space in the third bcdedit in between partition and =

Example 

  • bcdedit /set osdevice partition =c:

Should be

  • bcdedit /set osdevice partition=c:

Thank you so much,

Lucas

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