Kari you can also destroy the partitions using a copy of GParted Live(Linux tool) I have used it ton of times, it's very intuitive and easy to use.
I have never had trouble from install media. The install media has no 'permissions' issues, so I can't understand the problem. If this were typical, you could never do true a clean install without Live Linux media.
There is also the Diskpart Clean option from WinPE:
- Open admin CMD
- type diskpart
- type list disk
- select disk number
- type clean & press enter
- a message appears: DiskPart succeeded in cleaning the disk
Now the drive can be re-initialized, partitioned, and formatted.
That's what I usually do from the install media. But, you should be able to do it from the advanced options.
I've used it before, but I've never seen anything I couldn't do with the installer. Call me old fashioned, if you want to. It's true, I am. I've never denied it. I just fail to see the necessity.