Complex sentence: The Minix file system was mostly free of bugs, but used 16-bit offsets internally and thus had a maximum size limit of only 64 megabytes, andthere was also a filename length limit of 14 characters.
Split into simpler sentences: The Minix file system was mostly free of bugs, but used 16-bit offsets internally and thus had a maximum size limit of only 64 megabytes. There was also a filename length limit of 14 characters.