Originally Posted by rebl
2. Ok i realize that if an epub has an image inside it's structure (which is not the cover, for example is the publisher logo, or Tolkien's Middle Earth map) but was dumbly named cover.jpg (buy the person/software who generated the epub), and I add a new cover, the cover.jpg file will be lost upon export to device - so the only solution is to FIRST edit the epub file in sigil (or manually) and rename the original cover.jpg in -let's say- img0.jpg, BEFORE adding the new cover.
Sigil works for this
, Rename the cover (ie. map1) in the Book Browser, then you must:
1) either add your cover image before the Map
2) Sigil split the page and set the new cover page semantics to 'cover' (Sigil does not appear to have a 'remove Semantics' ), shifting that flag.
Adding your cover in Sigil is fairly easy (Steps vary depending on Sigil 4.x or 5.x). Just select the cover source (cover.jpg) from the (calibre) books folder., then place it on the cover page.