What Is ISO Dlm?

.dlm
A .dlm may be a file type that did not completely download. It occurs when you are using Akamai Download Manager to download a file off of the internet and it does not download completely. It is also used by Microsoft and Adobe for some of their files, such as operating systems or large files.
.ISO
An .ISO file is a disk image. It has all of the folders and files that come on a disk in a simpler format. The easiest way to access the file is to burn it onto a disk.
ISO.dlm
The specific ISO.dlm file usually refers to an incomplete download of Windows Vista. This occurs when the .dlm file didn't download completely and wasn't renamed as an .ISO file.