Can't boot Windows7 from my SSD now that old XP drive is attached

liamjf

Honorable
Apr 25, 2013
2
0
10,510
Hello, hopefully someone can help!
I have a new system that I have just built with a GB GA-Z77-DS3H motherboard and a brand new Vertex 3 SSD. I have installed W7 64bit from dvd and all seems well.
However, when I attached the old HD (samsung 1TB partition into 2 drives) it always attempts to boot from the old xp install on the samsung drive and I get an error and it won't boot. I have another 2TB drive (H) that has no OS on it and that is absolutely fine
I can boot without the samsung HD attached and then plug it in afterwards and read/write no problem. I have deleted the old XP partition (drive F) and reformatted it under W7 but that hasn't helped.
If I leave the drive as a deleted volume it all works fine but of course, I cannot use the drive!
I need to keep the second partition (Drive G) as it contains all my data (photos etc.)
I assume its something to do with the bios and Windows Boot Manager -
In the BIOS Windows Boot Manager is the boot preference and in fact it won't boot from drive C (the vertex SSD with W7 on) if I select it directly, only from WBM - I cannot get it to boot from the SSD (Drive C) directly and have deleted all the other HDs from the boot drive list but doesn't help
I have tried various options in the bios - disabling CSM support and booting in UEFI mode only but I really don't understand these options and I have only managed to get it to not boot at all.

How do I format my F drive so that the Bios doesn't think that there is an OS on it (which there isn't anymore) or how do I alter my BIOS so that it will only boot from my SSD?

Someone else thought I may have installed W7 in UEFI mode but I don't know what this means!
I could reinstall windows as the install is only a few days old but would need to know what to do to prevent the same mistakes!

Many thanks, Liam.
 
"I can boot without the samsung HD attached and then plug it in afterwards and read/write no problem. I have deleted the old XP partition (drive F) and reformatted it under W7 but that hasn't helped." Sounds like there is some crap left on that hardrive, may be start fresh. Run this on the xp-drive :http://www.dban.org/.
 

mbreslin1954

Distinguished
It sounds like BIOS is trying to boot from the 1 TB drive when it is present/connected. Try connecting both drives, but instead of booting go right into BIOS. There should be a menu for Boot Priority. Make sure in that menu it has the SSD selected to boot from first.
 

liamjf

Honorable
Apr 25, 2013
2
0
10,510

Hi, I have gone straight in to the Bios countless times. I CANNOT boot from the SSD directly, only from "Windows Boot Manager" in the boot priority list. If I don't select WBM then nothing boots at all

The Boot and Nuke - Can I just nuke 1 partition on a drive and leave the other one (which has all my data) untouched?

Liam.
 
I can think of two solutions if the problem is what I think that it is.

One is trivial. I've found that every time I change drive configuration, my Asus motherboard loses my boot settings and boots from the drive in the lowest-numbered port. So I put my boot drive on SATA port 1, and now I never have boot problems.

The other is to wipe the MBR off that old drive. dban can destroy the drive for you, or you can use my favorite: Secure erase run from Parted Magic. It will take some time to run, though.

A quick google on "wipe mbr" provides dozens of suggestions, with dban near the top of the list. This thing http://mbrwizard.com/ has a "wipe mbr" function. I have never used it and don't vouch for it.