PRO H610M-E doesn't support 2 SATA disks and M.2 (OS installed) in CSM mode!

iant715c002eb

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Jan 19, 2025
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I have this problem ...
It has a motherboard BIOS bug. Not even with a BIOS Update can it be solved.
The problem exists when you select Legacy mode (CSM) instead of UEFI mode. In my system I had Windows on M.2 and two extra SATA drives.
From the BIOS I set the option to Boot priority Hard Disk. (it does not allow you to choose which of the 3 hard drives is bootable)
Save, restart and it goes to start from a SATA and as a result the error comes out.
error: no such partition.
Entering rescue mode...
grub rescue>
 

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See here for example, you should do the MBR to GPT conversion for the boot drive that i explain there, so you can boot from it in UEFI mode. Because Windows 11 has UEFI mode as a hard requirement, and with Win10 support ending this October, we're all gonna have to use Windows 11 very soon (if we don't already). So anything you try now with CSM mode is already on a countdown to cause problems soon. That's why i would do that conversion for the boot drive, then it will work in UEFI mode no problem and there will be no error, as well as no problem upgrading to Win11.
 
This is one how to, but I need to see if there will be a problem with the Linux that is on the my M.2.
But it does not solve the problem they have in the BIOS.
Wouldn't it be easy with the BIOS to put all the hard drives in the list for selection in the BOOT PRIORITY?
 
I think an M.2 PCIe SSD requires UEFI mode to boot from it. Don't know why the Seagate drive isn't listed.
 
By restarting computer and pressing F11 key appear the menu with ALL my disks and selecting the M.2 (CT500P3SSD8 in picture) be able start my OS (Linux or Windows).
Doing it every time - it's not a solution!
 
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