Red Hat Enterprise Linux (RHEL) VM fails to boot on ESXi after changing its SCSI controller from LSI Logic Parallel to VMware Paravirtual

Products

• VMware vSphere ESXi

Issue/Introduction

A Virtual machine (VM) with Red Hat Enterprise Linux (RHEL) installed as guest operating system fails to boot on ESXi after its virtual SCSI controller was changed from LSI Logic Parallel to VMware Paravirtual (PVSCSI).

During the failing boot, the following messages are shown on screen:

Warning: / dev/ disk/by—uuid/<disk_UUID> does not exist


Generating "/run/ initramfs/rdsosreport .txt"

Entering emergency Mode. Exit the shell to continue.
Type "journalctl" to view system logs.
You might want to save "/run/initramfs/rdsosreport . txt" to a USB stick or /boot
after mounting them and attach it to a bug report.

dracut :/#

see screenshot below for an example:

 

Environment

Red Hat Enterprise Linux 9.x
Red Hat Enterprise Linux 8.x
Red Hat Enterprise Linux 7.x
Red Hat Enterprise Linux 6.x

VMware vSphere ESXi

Resolution

To solve this problem please apply the steps outlined in the Red Hat KB article How to change SCSI controller from LSI Logic SAS or Parallel to VMware Paravirtual

Alternatively, or if you do not have access to the above article, please reach out to the Red Hat support.