Windows 10: can't attach vhd file

I am trying to attach a vhd file but I keep getting the message that another process is using it I used procexp but it noted 0 ---- how can I find out what process is holding the file

:)

 

Attaching a VHD

I am running Windows 10, the latest build and created a Windows Image Backup image with Backup and Restore (Windows 7) from the control panel.

To see if it works, I opened Disk Management and clicked on Action - Attach VHD and clicked on the VHD file, which is located on an external USB drive, but after that, no VHD was created, tried doing a Refresh and Rescan Disks and still no VHD drive.

What am I doing wrong?

Thanks

 

Unable to attach VHD

I am current running Windows 10 on my system. For my office use, I need Windows 7. So, I installed Windows 7 on virtual hard disk by creating a VHD partition of 50 GB as a dual boot system. It was running without any issues; however, today morning when
I started my system, Windows 7 was not starting up. I logged in Windows 10 and tried to reattach the .vhd file, but to my surprise I am unable to attach it. I am getting an error message as "The operation has been Cancelled." Please let me know how to attach
the .vhd file and start using it again. Thanks.

 

how to resize a vhd file?

so I was experimenting with vhd files and I wanted to resize a vhd file so that I could add in more partitions. basically, I just wanted to put two vhd files together as a partition but can't so I copied one of the vhd files using VirtualBox and then extend
the copy and create a partition and copy the contents of the other vhd file.

information of the vhd files because I can't find the attachments button:

1. FreeBSD.VHD (the one I copied):

disk type: MBR

file system: I think either UFS, UFS2, or ZFS.

disk space: 16.00 GB

2. MS-DOS 6.22 with CD-ROM Support VHD.vhd

disk type: MBR

file system: FAT

disk space: 2.00 GB

edit: I found out! go to the disk you want to resize (on VirtualBox) open properties, and use the slider to change disk size.