hmmmm well won't get ntldr error when accessing the drive as just a slave thats a boot only error..... so you can't boot the computer at all? or it just won't boot from the d: drive?

ntldr errors only occur during boot up, basically they load the OS into memory, so after the system is booted up your computer won't use the file again till next time you boot up..... so it makes sense that if you are trying to boot from the d: drive you will get that error because all it would be formatted with is the file system no OS or anything like that....

if you are booting from the c: drive and still getting that issue then the NTLDR file is broken..... you can replace by copying NTLDR from a boot disk, or reformat the c: drive...... anything on d: should be intact