Unfortunately, KEGS (nor any other GS emulator) runs on an SE. So it remains true, KEGS cannot read from actual (Apple GCR) drives.
I don't know what a SAMDisk is. But if a Mac SE can't read it with DiskCopy 4.2 or DiskDuper - the original floppy is probably bad.
If you find a solution, you should share it and make the rest of us wiser...