Converting .ISO to .IMG... Maybe

I don’t know if this really worked, but I want to save my notes since I had such a hard time figuring out how to use WinImage. I had already seen what looked like a complicated process for creating a bootable SD, so when I realized that my PC came with an “SD Memory Boot Utility,” I decided to try it.

However, it wanted a floppy disk .img file, and I had a .iso file for a CD. I read online that sometimes just changing the file extension would work, but the utility still didn’t recognize the file after I changed the .iso extension to .img.

Here’s the procedure I followed that failed but appeared to have promise.

1. From WinImage, open the ISO file and extract the contents to a local directory.
2. From WinImage, choose New, File. Since I wanted a size bigger than any listed, I chose a DMF option.
3. Choose Image, Inject a Folder, and select the folder containing the extracted files.
4. Chose File, Save As, and select .ima. Something I read online made me think that .ima and .img files are equivalent.

The above procedure didn’t work, though, since the root directory I wanted to create contained more than 16 entries. The WinImage help says, “DMF format has only 16 entries in the root directory…” I couldn’t find enough entries that I thought might not be needed, so I went on to another path… probably another dead end.