New boot disk doesn't appear in BIOS boot devices but does in F8 menu

DeepThought · 13 Jan 2022

All files are now in...
https://drive.google.com/drive/folders/1Ikc8ncvQdxKsxGhydKo4-RizHzVA_OI5?usp=sharing

(1) When the system restarts, it shows this splash screen...
Toad - 20220113_143728 BIOS splash screen.jpg
...followed by the RAID screen...
Toad - 20220110 RAID layout.jpg
...followed by the first BIOS splash screen again...
...followed by this screen...
Toad - 20220113_142251 after reboot.jpg
...I then have to reset, hold F8, and then choose "Intel Volume0_SSD_Boot" from the list of options, shown here...
Toad - 20220113_142359 F8 boot options.jpg

(2) A new image of Disk Management before your stated changes...
Toad - 20220113 Disk Management 1-before.jpg

(3) The changes you had me do...
Toad - 20220113 diskpart results.png

(4) Disk Management after your changes and a reboot (no change on reboot)...
Toad - 20220113 Disk Management 2-after.png

NavyLCDR · 13 Jan 2022

Why are you booting in legacy BIOS mode from an MBR disk? In my opinion, you need to convert Disk 2 to GPT with an EFI system partition and boot in UEFI mode. If you want to test this theory without converting Disk 2 to GPT then:

Code:

diskpart
select disk 2
create part pri size=100
format fs=fat32 quick
assign letter=t
exit
bcdboot C:\windows /s T: /f UEFI

Then try booting from disk 2 in UEFI mode.

MaloK · 14 Jan 2022

What eludes me, is that both volumes are flagged as bootable In RST bios.

DeepThought · 14 Jan 2022

NavyLCDR, is that method lossless? Will it wipe out my present boot disk or will it preserve it? I just got done upgrading this from Win7 to Win10 without data loss.

From How to convert MBR to GPT disk without data loss...

"Keep in mind that you can't use Diskpart on your system drive while you're running Windows"

Incidentally, while researching the above, I found a tool called mbr2gpt, but this was the result on validate...

Code:

c:\Windows\System32>MBR2GPT.EXE /validate /allowfullos
MBR2GPT: Attempting to validate disk 2
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes
Disk layout validation failed for disk 2

NavyLCDR · 14 Jan 2022

My suggestion will not cause any data loss nor affect legacy BIOS in any way. All it is doing is creating a FAT32 partition in the existing unallocated space for the computer to boot in UEFI mode from.

zbook · 14 Jan 2022

MBR2GPT can be performed after testing the FAT32 boot and deleting this new partition.

steve108 · 14 Jan 2022

DeepThought said:

NavyLCDR, is that method lossless? Will it wipe out my present boot disk or will it preserve it? I just got done upgrading this from Win7 to Win10 without data loss.......

Always have a current backup image: Backup and Restore with Macrium Reflect

DeepThought · 14 Jan 2022

NavyLCDR, I tried something similar to your suggestion. Since my boot disk already has 3 partitions on it, it would not let me create a 4th of just 100MB, since that would've left a 5th partition of unused space, which exceeds MBR's 4 maximum partitions. So, I formatted the entire 9.8G 4th partition and ran your bcdboot command. I succeeded in doing something. When I rebooted, I put my BIOS in EFI Compatible mode, and under BIOD boot options, there was one additional option I'd never seen before called "Windows Boot Options" (I think, I didn't grab a pic in time). Anyway, when I tried to boot to it, it came up with a blue OS screen which looked like the Windows 10 Troubleshooter. It gave me options like 3 different kinds of Safe Mode, but none of the options involved repairing boot.

steve108 · 14 Jan 2022

DeepThought said:

NavyLCDR, I tried something similar to your suggestion. Since my boot disk already has 3 partitions on it, it would not let me create a 4th of just 100MB, since that would've left a 5th partition of unused space, which exceeds MBR's 4 maximum partitions. So, I formatted the entire 9.8G 4th partition and ran your bcdboot command. I succeeded in doing something. When I rebooted, I put my BIOS in EFI Compatible mode, and under BIOD boot options, there was one additional option I'd never seen before called "Windows Boot Options" (I think, I didn't grab a pic in time). Anyway, when I tried to boot to it, it came up with a blue OS screen which looked like the Windows 10 Troubleshooter. It gave me options like 3 different kinds of Safe Mode, but none of the options involved repairing boot.

If you have a magic Macrium Reflect USB, boot from it and run the option to repair boot problems. If you don't have a MR Rescue USB and have another working PC, make one.

steve108 · 14 Jan 2022

Rescue Environment - Knowledgebase 8.0 - Macrium Reflect Knowledgebase how to make a MR Rescue USB