I'm trying to convert an epub to mobi using Calibre, and I would like to produce the ebook as a single file. I've tried selecting the "insert metadata as page at start of book" as some guides suggest, however this is not enough to display the cover image.
If I save to disk and copy the whole folder to my kindle device, it displays the cover image correctly. However it doesn't if I copy only the .mobi file.
Any suggestion or workaround?