A Red Hat Enterprise Linux (RHEL) virtual machine 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 with Red Hat Enterprise Linux installed as the 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 failed boot, the following messages are shown on the 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 :/#

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 8.x

Resolution

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

If the above article is inaccessible, contact Red Hat Support.