Removing Floppy Drives with PowerCLI
The virtual machine floppy drive is one of those things that I'd rate as somewhere in the "stupid default" configuration bucket. In my virtualization practice, I very rarely use it, and so I add it as needed. While it is not a device that is supported as a hot-add hardware component, that inconvenience can be easily accepted for the unlikely event that it will be needed. The floppy drive can be removed quite easily with PowerCLI.
To remove a floppy drive, the vSphere virtual machine needs to be powered off. This is easy enough to automate with a scheduled task in the operating system. For Windows systems, the "shutdown" command can be configured as a one-time scheduled task to get the virtual machine powered off. Once the virtual machine is powered off, the Remove-FloppyDrive Cmdlet can be utilized to remove the device.
Remove-FloppyDrive works in conjunction with the Get-FloppyDrive, which retrieves the device from the virtual machine. This means that Remove-FloppyDrive can't, by itself, remove the device from a virtual machine. The Get-FloppyDrive Cmdlet needs to pass it to the Remove-FloppyDrive command. This means a simple two-line PowerCLI script will need to accomplish the task. Here's the script to remove the floppy drive for a virtual machine named VVMDEVSERVER0006:
$VMtoRemoveFloppy = Get-FloppyDrive -VM VVMDEVSERVER0006
Remove-FloppyDrive -Floppy $VMtoRemoveFloppy -Confirm:$false
This is done with the "-Confirm:$false" option to forego being prompted to confirm the task in PowerCLI. Fig. 1 shows this script being called and executed to the vCenter Server through PowerCLI.
Figure 1. The PowerCLI command reconfigures the virtual machine to remove the floppy drive. (Click image to view larger version.)
This can be automated with PowerShell as a scheduled task, and used in conjunction with the Start-VM command to get the virtual machine back online if the tasks are all sequential in a period of scheduled downtime.
Posted by Rick Vanover on 11/22/2010 at 12:48 PM