I am Dale Hayter, a Microsoft and VMware certified Technical Consultant.

My blog has been built up over the years from my experience of working on an IT helpdesk and also from being out on-site.

ESX4.1 dd command

Tip From The Dirty Contractor

If any of you use the “dd” command on the ESX CLI to quickly create ISO files from CD/DVD with the command
“dd if=/dev/cdrom” you will have noticed this doesn’t in ESXi.

The CLI command in ESXi is “dd if=/dev/cdrom/mpx.vmhba0:C0:T0:L0”


if you want to create an ISO file and store it as “test.iso” you would use
“dd if=/dev/cdrom/mpx.vmhba0:C0:T0:L0 of=/vmfs/volumes/shared01/iso_files/test.iso”

I’m sure you know but don’t forget to load the CD/DVD in the DVD drive on the ESX server.