OS/2 1.1 build 4.72

OS/2 1.1 build 4.72 is the build of OS/2 1.1 that was included with versions 1.03 and 1.04 of the Microsoft OS/2 SDK. It is the earliest known build to include the Presentation Manager interface. OS/2 Museum posted several screenshots of this build in 2011, and uploaded floppy images (in both the 3.5" and 5.25" variants) to the Internet Archive on 5 December 2022. As of 2022, This is the earliest build of OS/2 1.1

Bugs and quirks

 * Shutdown is incomplete and hangs the system.
 * QHelp is incomplete.
 * The system has a large chance of crashing upon exiting an OS/2 command line prompt.
 * By default, setup will only detect SCSI drives. By replacing the  file with either   or , ESDI hard drives and Model 50/60 hard disks can be used.