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12Aug/110

How to upgrade VMware ESXi 4.0 to 4.1

How to upgrade VMware ESXi 4.0 to 4.1

If you are using VMware ESXi 4.0 standalone or free version. You will not be able to upgrade VMware ESXi 4.0 to 4.1 using vSphere Host Update Utility. One of the solution is to use vihostupdate from vSphere Command-Line Interface (CLI) for remote installation.

Below are the steps to  upgrade VMware ESXi 4.0 to 4.1 using vihostupdate.pl from vSphere CLI

1. Download vSphere Command-Line Interface from http://www.vmware.com/support/developer/vcli/ and then install into your computer

2. Download the latest VMware vSphere Hypervisor from https://www.vmware.com/tryvmware/p/activate.php?p=free-esxi&lp=1

3. Select the package with upgrade ZIP from ESXi 4.0. Eg: ESXi 4.1 Update 1 (upgrade ZIP from ESXi 4.0)

4. Shutdown all the guest machine and set ESXi host into maintenance mode

5. Go to cmd prompt (make sure you "run as Administrator" if you are using Windows 7) and run the following command:

cd "c:\Program Files (x86)\VMware\VMware vSphere CLI\bin"

I'm using Windows 7 x64. If you are using Windows XP or 32bit Windows then it should be:
cd "c:\Program Files\VMware\VMware vSphere CLI\bin"

vihostupdate.pl -server <ESXi host name/IP> -i -b <location of the upgrade ZIP bundle>

vihostupdate.pl -server 192.168.1.7 -i -b c:\temp\upgrade-from-esxi4.0-to-4.1-update01-348481.zip

Enter the user name and password

it will start patching/upgrade your ESXi server

6.  Restart your VMware ESXi host

7. You can check the patches intalled by the following command:

vihostupdate.pl -server <ESXi host name/IP> -query

7. You can now exit the Maintenance mode to enjoy upgraded VMware ESXi 4.1

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