To customize a Linux guest operating system, the virtual machine must meet certain requirements.

The following are the requirements for Linux:

The clone or template has the Linux versions that is supported for Guest Customization. For a list of Linux operating systems supported for guest customization, see the vSphere Compatibility Matrixes at http://www.vmware.com/pdf/vsphere4/r40/vsp_compatibility_matrix.pdf on the VMware vSphere documentation Web site.

The guest operating system has the most recent version of VMware Tools installed.

Perl must be installed in the Linux guest operating system.

The clone or template has a root volume formatted with an ext2, ext3, or ReiserFS file system.