Editing OS/2 (section)

====OS/2 1.2 (1989){{anchor|1.2|1.21}}====
In 1989, Version 1.2 introduced Installable Filesystems and, notably, the [[High Performance File System|HPFS]] [[File system|filesystem]]. HPFS provided a number of improvements over the older [[File Allocation Table|FAT]] file system, including long filenames and a form of [[Fork (file system)|alternate data streams]] called [[Extended Attributes]].<ref>{{cite web|title=HPFS|author=H. Gilbert|work=Das Boot|publisher=PC Lube and Tune|year=1995|url=http://www.yale.edu/pclt/BOOT/HPFS.htm|url-status=dead|archive-url=https://web.archive.org/web/20060714193222/http://www.yale.edu/pclt/BOOT/HPFS.htm|archive-date=2006-07-14|access-date=2006-06-09}}</ref> In addition, extended attributes were also added to the FAT file system.<ref>{{cite web|title=Implementation of extended attributes on the FAT file system|author =Bob Eager|work=Tavi Systems|date=28 October 2000|url=http://www.tavi.co.uk/os2pages/eadata.html}}</ref>

[[Image:MS-OS2-v1.0-diskettes.jpg|left|thumb|Installation Disk A of Microsoft OS/2 1.3 (3½-inch floppy disk)]]

The Extended Edition of 1.2 introduced [[Internet protocol suite|TCP/IP]] and [[Ethernet]] support.

OS/2- and Windows-related books of the late 1980s from both Microsoft's [[Gordon Letwin]] and his IBM counterpart [[Ed Iacobucci]] acknowledged the existence of both systems and promoted OS/2 as the system of the future.<ref>{{cite book|last=Iacobucci|first=Ed|author-link=Ed Iacobucci|author2=foreword by [[Bill Gates]]|title=OS/2 Programmer's Guide|year=1988| publisher=[[McGraw-Hill Osborne Media]]|chapter=Foreword|isbn=0-07-881300-X|quote=I believe OS/2 is destined to be the most important operating system, and possibly program, of all time. As the successor to DOS, which has over 10,000,000 systems in use, it creates incredible opportunities for everyone involved with PCs.}}</ref>{{r|vose198807}}