Windows 10: win10/win7 dual boot (hardware option)

On my desktop I am using ICY DOCK SSD cage for my OS:
MB322SP-B_ExpressCage_2.5" HDD/SSD CAGES_ICY DOCK manufacturer Removable enclosure, Screwless hard drive enclosure, SAS SATA Mobile Rack, DVR Surveillance Recording, Video Audio Editing, SATA portable hard drive enclosure
One tray is dedicated to one OS (either Win7 or Linux), the other is for Win10.
I run whatever OS I want while the other OS and it's SSD is disconnected.
All data files are on NAS.
I have used this setup for a while for Win7 and Linux with no problems at all.
Now I am trying to use it for Win10 as well.
Initially everything was OK, but couple of times I have had problems with Win10 where it wouldn't boot.
Problem was solved with changing boot sequence in BIOS, but... it has me worried (I know little about Win10).
Why should it be? Is there something different about Win10 that is causing it?
Win10 version 1909 (build 18363.418)

:)

 

Win7 / Win10 dual boot only boots to Win10

I have a home build machine with a dual partition for booting either Win7 or Win10 selectable.

The order was Win7 followed by Win10 in the menu.

The machine would always display a screen where I could select either Win7 or Win 10. If I didn't select in time the default was the first in the menu which was Win7

Starting this evening the machine no longer displays the selection menu but instead boots immediately and directly to Win10.

What's wrong?

How can I fix this so it works the original way?

 

WIN10 /WIN7 Dual boot, WIN7 forced to upgrade to win10, now I can only boot to Primary WIN10 drive

I have a WIN10 install on a 256 SSD (DRIVE 2)

and had a win7 install on a 1tb WD Black HD (DRIVE 5)

My primary boot was WIN10 (D2) and always had the option of picking wich drive to boot to on start up.

I was recently forced to upgrade my WIN7 (D5) to WIN 10. It completed the update and I was using the opperating system on my 1 tb HD and it was working fine. Then I shut off the computer and came back about 4 days later and I couldnt boot to my second
win10 install. (there may have been an update to the win10 before I shut it down)

I went into boot up options and selected the 2nd win10(win7) Drive 5 as primary boot and it reverted back to the original win 10(drive 2) boot.

What is the best way to have a dual boot win10 system and how can I change my boot up options so that I can continue to choose the boot up drive?

WIthout a doubt the upgrade Win7 drive is still there and can be used, but there must be a boot settings that is preventing it from being accessed.

If i am not allowed to have a dual boot WIN10/Win10 machine, can I revert back to WIN7 on the upgraded drive?

Also, original WIN10 install was from a win8 upgrade, 2nd one is from a win7 upgrade, both fully registered versions of WINdows.

Much apprecaited

 

Is there any way to install Win7 after Win10 for dual boot?

Original Title: Dual boot Win7 second too Win10

Hi,

Is there any way to install Win7 after Win10 for dual boot?

I don't want to reinstall in order to do it. If i have to reinstall, my laptop will not see Win10 again.

Regards Jonas