VMware vSphere ESXi 5.1 was released last month, after upgrading my hosts I had some really annoying issue’s, I couldn’t connect my iSCSI (QNAP) datastores and the hosts failed with a PSOD.. once I checked the HCL at the VMware website I saw that my HP DL360 G5 isn’t supported anymore.. time to rollback the latest installation.

Solution:

(Re)boot the host and press R to start the Recovery Mode..

Installed hypervisors:

HYPERVISOR1: 5.0.0-623860
HYPERVISOR2: 5.1.0-799733 (Default)

CURRENT DEFAULT HYPERVISOR WILL BE REPLACED PERMANENTLY
DO YOU REALLY WANT TO ROLL BACK?

Press Y to start the roll back

Result:

The host is downgraded and back online again with VMware vSphere ESXi 5.0.0

sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

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Sometimes it is necessary to rollback an installation of VMware ESXi, reverting to a previous installation. Last weekend I did this for testing in my home lab. It’s pretty easy…

^ My upgraded VMware ESXi 4.1.0 Build 260247 server

^ Reboot the host and press SHIFT + H to revert the rollback. Message:

Current hypervisor will premanently be replaced with build: 4.0.0.-164009. Are you sure?

Press Y (or SHIFT + Y) to rollback the upgrade

Read more…

sanderdaems

Sander Daems is founder and author of this blog and working as a Lead (Sr.) Consultant by UNICA ICT Solutions. Sander has over 15 years experience in IT, primary focus: virtualization and modern worksplace.

More Posts - Website

Follow Me: