Windows 10: How to revert back to my original HDD as a primary drive for my win10?

Hello! I am unsure of how to switch back to my original HDD after switching to a new NvME SSD as my primary drive. Here is some context-In 2019, a friend of mine recommended switching from HDD to NvME SSD to improve the performance of my Dell Inspiron 15 7000 Gaming Laptop. He helped in installing an NvME drive, and also installed a windows 10 on the NvME drive. As far as I know, he removed windows from the HDD. He also switched the boot option to make the NvME drive as the primary boot option. Due to performance issues, I want to change my laptop. I want to make the NvME SSD as a spare drive

:)

 

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

 

Hard drive/ OS issue

a guy suggested :

• shutdown
• unhooked HDD
• restarted
• yay !!
• reconnected HDD
• restarted
• yay !!

also , try method 3
How to Unlock Drive in Windows 10: 5 Ways to Remove a Lock

 

Additional HDD

sata or IDE? im banking IDE.

pull both jumpers off. both drives.

plug the IDE cable in like so. it goes a certain way.

'''''''''''''''''''''''''Short
L----------L----L <Ribbon
I...............I......I
Mobo.........2.....1
...............(Slave)..(Master)

connect 120GB HDD no jumper onto the connector of the short side of the cable (1 master).

connect 160GB HDD no jumper to 2 slave.

make sure mobo end is seated correctly. power is in. boot board.

go into bios set HDD 120GB as primary boot device. then go into the HDD list and make sure the 120GB is at the top of the list.

make sure AHCI/IDE are set appropriately for your board. especially if a bios reset has happened.

if this does not work. put jumpers on both HDD's on the CS pins (cable select pins are marked on the plastic, the pcb or a sticker showing you which 2 pins are M, S, CS)

then repeat steps as necessary.