Yes, I did. All is well. I didn't need to convert d: to logical. I reconnected it, deleted the boot directory and the bootmgr file. Rebooted. C: drive is now System drive.Computer Guru said:Did you run boot repair with drive d: uninstalled?
If not, you should.
I used EBCD to rewrite MBR, but "device unknown" still shows under Boot Manager in EBCD. I don't care, because it is now booting from c:
I'm a happy camper.