Exactly... I few words... BIOS RAID MODE: INTEL C600+/C220+ series CHIPSET SATA RAID Controller  (PROBLEM! WIN11 UPGRADE, MUST BE DELLETED). I think if [NAME] de Oro hadnt problems (win11 upg), or his bios was in another mode, or if was in RAID mode the C600 AHCI installed driver was not being used by windows...
I have a Workstation 5820 using Windows 10 Pro for Workstations and approved for upgrade to Windows 11. My boot disk is NVME disk. However, when trying to upgrade Windows 10 to 11, Windows does not start after reboot, due to a Blue screen due to a problem with "iaStorE.sys" (IRQL NOT LESS OR EQUAL).So, instead of doing an upgrade, I decided to FORMAT the disk and start an installation from zero. And the same problem always occurs. I've tried all versions of intel VROC (6.2, 7.0, 7.6 and 8.0 - 8.0 doesn't even work with Windows 10, same error) and in all I face the same problem. I am saying this, because i need to load the drivers IASTORE  and IAVROC at the begging of Windows installations because, if i dont do this, the installation cannot see nvme disks and can see only SATA disks.However, when I install from an SSD disk (SATA), either by Upgrade or by clean installation, strangely, Window 11 installs and works. But I don't want to start Windows from an SSD and yes from an NVME disk. Has anyone had this problem or have an idea of how to solve it?
Precision 5820 - Windows 11 - Error