I'll give you an example of how I use the virtual floppy. I have an application that I use on a virtual floppy. I created a .img file using the idrac's "create image" function. I boot to a virtual cd of Centos, then I mount the virtual floppy. i can then run my application, AND any changes I make to the image are saved to the .img file. Now I can use the changed .img file on other systems if I need to. So basically, the .img file allows you to save changes you make, and the iso does not. 
Hello, I have used iDRAC's virtual CD quit often for firmware updates (Dell Rx20 and newer) or for basic installation or recovery when network installation over PXE boot was not possible. But I what is the point of iDRAC's virtual floppy, and what are it's rules? Also, what is iDRAC's lcdrive (I have only seen this on iDRAC6). RegardsAndreas
what is the point of iDRAC's virtual floppy