[SOLVED] Strange boot loop (video included)

Sep 22, 2021
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Hello, I have 2 NVME's, and 1 ssd. My OS is installed on one of the nvme, and the two last drives are used for games etc. After i recently updated my windows, when i boot, it goes into a boot loop. No matter what boot order i put, it doesnt get further than Gigabyte Insists logo. When I press F12, and choose the third drive, which is for some reason invisible, it boots. I have no clue what happened, my ssd has no os on it.

TLDR: Pc doesn't boot when SSD is plugged in mb, no OS or files is stored on it.

Invisible third option that makes my pc boot
 
Solution
You have 2 bootloader partitions -
260MB EFI system on Disk 0 and​
260MB EFI system on Disk 2.​

This causes confusion. You need to delete one of them.
But if you delete the wrong one, your system might not boot anymore.

1st - test if your system can boot without 500GB drive connected. That is 850Evo sata 2.5". Correct?
Disconnect it and try to boot your system.
2. If system boots successfully, then shutdown, reconnect 850 evo and
delete EFI system partition from 500GB drive.
diskpart
list disk
select disk 2
(select 500GB disk)​
list partition
select partition x
(select 260MB partition, x=1 or x=2)​
delete partition override
You have 2 bootloader partitions -
260MB EFI system on Disk 0 and​
260MB EFI system on Disk 2.​

This causes confusion. You need to delete one of them.
But if you delete the wrong one, your system might not boot anymore.

1st - test if your system can boot without 500GB drive connected. That is 850Evo sata 2.5". Correct?
Disconnect it and try to boot your system.
2. If system boots successfully, then shutdown, reconnect 850 evo and
delete EFI system partition from 500GB drive.
diskpart
list disk
select disk 2
(select 500GB disk)​
list partition
select partition x
(select 260MB partition, x=1 or x=2)​
delete partition override
 
Solution
Sep 22, 2021
5
0
10
You have 2 bootloader partitions -
260MB EFI system on Disk 0 and​
260MB EFI system on Disk 2.​

This causes confusion. You need to delete one of them.
But if you delete the wrong one, your system might not boot anymore.

1st - test if your system can boot without 500GB drive connected. That is 850Evo sata 2.5". Correct?
Disconnect it and try to boot your system.
2. If system boots successfully, then shutdown, reconnect 850 evo and
delete EFI system partition from 500GB drive.
diskpart
list disk
select disk 2
(select 500GB disk)
list partition
select partition x
(select 260MB partition, x=1 or x=2)
delete partition override
I already tried booting without the SSD, and the system does indeed boot. I'll try to delete the 260MB EFI from the SSD.
 
Sep 22, 2021
5
0
10
You have 2 bootloader partitions -
260MB EFI system on Disk 0 and​
260MB EFI system on Disk 2.​

This causes confusion. You need to delete one of them.
But if you delete the wrong one, your system might not boot anymore.

1st - test if your system can boot without 500GB drive connected. That is 850Evo sata 2.5". Correct?
Disconnect it and try to boot your system.
2. If system boots successfully, then shutdown, reconnect 850 evo and
delete EFI system partition from 500GB drive.
diskpart
list disk
select disk 2
(select 500GB disk)​
list partition
select partition x
(select 260MB partition, x=1 or x=2)​
delete partition override
That did indeed fix it, thank you so much.