Dealing with the “Checksum invalid” error while Mounting Image files People often face difficulties while downloading/opening a Self Mounting Image (smi) file – the most common bug being that an error message crops up, saying “Checksum invalid”. Checksum is a default calculator that checks the integrity of the data that is to be used for storage /transmission. Getting this … [Read more...] about How To solve ‘Checksum Invalid’ Problem – Is A Disk Image Problem