DOS 4.0 & H, 5.25 / 5 1/4" Floppy Disk. [ a] was a multitasking release of MS-DOS developed by Microsoft based on MS-DOS 2.0. Lack of interest from OEMs, particularly IBM (who previously gave Microsoft multitasking code on IBM PC DOS included with TopView ), led to it being released only in a scaled-back form.
| Brand | Microsoft |
| Type | Operating System |
| Format | 5.25 in Floppy Disc |
| Language | English |
| For Operating Systems | Microsoft DOS |
DOS 4.0 & H, 5.25 / 5 1/4″ Floppy Disk. [ a] was a multitasking release of MS-DOS developed by Microsoft based on MS-DOS 2.0. Lack of interest from OEMs, particularly IBM (who previously gave Microsoft multitasking code on IBM PC DOS included with TopView ), led to it being released only in a scaled-back form.