I have read where disk 0 should be my boot drive but while setting up my PC it looks like disk 1 got the C partition and windows files. When I attempt to swap the SATA cables between my two drives I get the message "NTLDR is missing". My PC has been running OK for several months except for a log-off issue which I am just starting to research when I found this. Is it OK to leave disk 1 as the boot? How do I change this if disk 0 is the better option?