MS on Trial The best product endorsement that Digital Research ever obtained for DR-DOS was from Microsoft, it turns out, and we know this thanks to a disclosure by Judge Benson in his 4-0 decision this week for Caldera. Phil Barrett, who was managing Windows 3.1 in 1990, received an email from a subordinate about DR-DOS 5.0, which said: "You asked me for a user's view of DR DOS 5.0... I used DR DOS 5.0 with a huge number of apps. I found it incredibly superior to MS DOS 3.31 and IBM DOS 4.01. ... The most important reason to use any version of DOS is to run DOS apps. DR DOS 5.0 runs every DOS app I know. DR DOS 5.0 works successfully with Windows (2.11, Win 386 2.11 and Windows 3.0 and 3.0a). ... Conclusion: DR DOS is vastly superior to MS dos 5.0." ® Back to start