After successfully installed XP on a computer after Vista. I tried both EasyBCD 1.7.2.exe and bootsect.exe and managed to enable Vista. I then found I couldn’t get back to XP. Subsequently I fixed the XP by using an XP CD and the recovery console to do a fixboot and fixmbr to enable XP. When I repeated the process again to enable Vista, again booting into XP became a problem. The situation just repeated itself again and again. When I did a fixmbr on the recovery console, the system responded and said “This computer appears to have a non-standard or invalid master boot record.” and so on. I wonder if it was because the Vista which was on drive C: but not on the partition 0. It was on partition 1, the second partition.
When I did “bootsect -nt60 all” after booting into XP, it said about drive D: where XP was installed “Updated NTFS filesystem bootcode. The update may be unreliable since the volume could not be locked during the update: Access is denied.” It was successful on drive C where Vista was installed. I got the same messages when I did the same bootsect command after booting into Vista.
After booting into Vista I did ” bcdedit -create {ntldr} -d “Microsoft Windows XP Pro” and it responded “An error occurred while attempting the specified create operation. The specified entry already exists. I opened the msconfig -> boot and Computer Properties found only Vista entry, no XP entry was found.
Now I can’t boot back into XP unless I go to the recovery console and do the same thing again.
