The main issues with NTFS would be the system either wouldn't be able to see the drive, or would fail to be able to read part of it. They were building up quit

The main issues with NTFS would be the system either wouldn't be able to see the drive, or would fail to be able to read part of it. They were building up quite a repertoire of tricks to get things to read correctly, but it was almost impossible to safely automate.