You take ownership of folders and files, not the drive as a whole, so you would have to access the drive contents through my computer and take ownership of them.
Right click on file or folder, click security, advanced.
If you can't see the security tab -
To display the Security tab
Open Folder Options in Control Panel.
Click Start, and then click Control Panel.
Double-click Folder Options.
On the View tab, under Advanced settings, clear Use simple file sharing [Recommended].