imgburn application version 2.4.4.0 + MDS file

Question

I used the imgburn tool to create KIT.ISO file (from dir and files)

after imgburn finished , I see two files

1. KIT.ISO file 
2. MDS file

please advice why I need the MDS file

only I need is to create .ISO file my target is to transfer this .ISO file to Linux and by the following command

     mount -o loop /var/tmp/KIT.ISO /mnt

in order to open the KIT under /mnt