Unable to Boot RHEL* if Intel® Volume Management Device (Intel® VMD) Is Enabled for Intel® Virtual RAID on CPU (Intel® VROC) RAID Management

It is not possible to install RHEL* 8.7/9.0 after enabling Intel® VMD, which is required to create RAID volumes using Intel® VROC. The RAID volumes or disks are not visible during the operating system installation, and the system will not boot if Intel VMD is enabled afterwards.

A problem with the inbox Intel® VMD driver included in RHEL* 8.7 and 9.0 was identified, and it is necessary to add the boot parameter intremap=off to the kernel command line while installing the operating system. This will prevent the operating system from encountering any problems.

This particular issue has been fixed via a kernel update and has been implemented in RHEL* 9.1.