[Windflier]

Okay, the second large file has the same name as the first, but it's a 'PART file', whatever that is. The one file I already burned to disk is a 'Disk Image file'.

Should I also burn the second file to the disk?

[Openurmind]

The download “package” should have been just one file. You want to burn this one file to the disk as the image. It will automatically open that up into the separate files it needs to read as it burns it to the disk and make it bootable for you.