sgi to ai conversion is most likely searched by users that want to either import old Silicon Graphics files to Illustrator or just maker a direct conversion or export between the formats. Unfortunately Illustrator does not support SGI format and it is a raster format anyway, so you have pretty much two options. Either import that raster as object, or turn it into SVG or other vector format that you can work with in Illustrator. But direct conversion will be always troublesome to some degree.
Updated: August 7, 2023