Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Windows 7 UEFI/bootmanager stops booting after 2nd HDD installed

11 Jan 2015   #1

Windows 7 and XP
Windows 7 UEFI/bootmanager stops booting after 2nd HDD installed

New Windows 7 install on a computer with only one hard drive. However, I now have another HDD with data on it that I need to plug into my SATA port on my motherboard. Once I plug this other hard drive into the motherboard I am no longer able to boot into windows. When it boots it now takes me to a black screen saying that it can not find the boot device. Once I unplug the new HDD it boots just fine. I'm assuming this has to do with my Windows 7 HDD being given a different ID from Disk 0 to Disk 1. an easy fix would be to change the order of where my Hard Drives are plugged into the SATA ports on the motherboard. The issue is that I can not do this because the Windows 7 Disk is a SATA III 6Gb/s so i need/want it to be installed on the SATA III 6Gb/s Ports and the 2nd Disk is a SATA III 3 Gb/s drive so I can't install it on the 6 Gb/s ports on the motherboard. On my Motherboard it seems to order the SATA III 3Gb/s drives first on the Drive order and the SATA III 6Gb/s at the end of the disk ordering. So, right now what I believe I need to do is Change my EFI/bootloader to point to the new Drive 1 location instead of the old Drive 0 location. Normally this isn't hard with MBR because you would just go to Boot.ini and change it there with no problem. However, I am unsure how to do that with EFI boot stuff and I have not found the specific solution to do this through searching the internet yet.

If changing the EFI to point to Disk 1 instead of Disk 0 is the answer. How would I go about doing this? If it isn't the answer does anyone have the answer?

My System SpecsSystem Spec
11 Jan 2015   #2

windows 7 pro 64bit sp1

Have you tried booting into safe mode to see if you can get to windows or you could also try to select the proper boot selection before booting to windiows via boot media selector on my computer when i start computer i have to hit f8 repetedly until it ask me what device i want to boot. These are not solutions just something to try to see if windows will boot with other harddrive at all. Also did other hard drive have a copy of windows installed on it or was it purely a data drive
My System SpecsSystem Spec
11 Jan 2015   #3
Microsoft MVP


Boot into BIOS setup to set the Win7 drive as Primary hard drive and as first device set to boot in the Boot Priority order.

Sometimes you must do this by choosing which hard drive is Primary under Storage drives, other times you will have your choice of all installed hard drives in the Boot Priority order to set whichever you want first before the others.

Did the data hard drive ever have an OS on it, and if so was it correctly deleted by deleting its partition and not just files?
My System SpecsSystem Spec


 Windows 7 UEFI/bootmanager stops booting after 2nd HDD installed

Thread Tools

Similar help and support threads
Thread Forum
How to prevent Windows 7 installation from booting in UEFI mode?
Hi there. I've built a brand new HTPC and it has UEFI BIOS on it. I've tried to install Windows 7 with USB drive that I've made UEFI bootable with Rufus, but it gives me blue screen everytime after Windows goes from "Windows files are loading" screen to a Windows logo animation. The hard drive that...
Installation & Setup
4TB GPT Not Booting - UEFI - WINDOWS 7 64 Bit
Problem is WINDOWS 7 does not boot from the 4TB disk alone. There is a 2 line error message "ReBoot and Select Proper Boot Device Or Insert Boot Media in Selected Boot device and press a key". The system boots only when both the hard disks are connected. Did any update of BIOS to...
Installation & Setup
Computer is now booting to the UEFI instead of directly to Windows
After installing a round of usual updates (Microsoft Security updates, Virus definition updates), my computer asked to restart so it could finish applying the updates. Nothing suspicious there, as this is pretty normal. However, when it restarted, my computer booted to the motherboard's UEFI...
General Discussion
windows 7 booting & reinstalling problem, bootmanager related
recently, i have been using my windows 7 for months but yesterday only,it crashed and when i am restarting the pc, its now even showing the repairing options upon inserting the windows 7 installation disc. i have my computer practicals in this week, and my pc has crashed and its not booting up....
Installation & Setup
Windows stops booting in UEFI mode after adding another hard drive
This week, I encountered the following strange problem for which I haven't found a final solution so far, though I have found some bandaids. But having a complete solution -or at least a reason why this problem occurs- would be great: I have a working installation of Windows 7 Professional x64...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 10:16.
Twitter Facebook