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This feature was a backport from the then-unreleased Windows 95, as suggested by Microsoft's advertisements for Windows for Workgroups 3.11 ("the 32-bit file system from our Chicago project"). With the introduction of 32-bit file access and Long File Names in Windows 95, DOS was reduced to the role of a boot loader for Windows.
32-bit file access does not require 32-bit disk access. Windows 95, Windows 98, and Windows Me use native, protected mode 32-bit disk drivers during normal operation. However Safe Mode uses MS-DOS real mode disk drivers instead. Real mode MS-DOS drivers could also be used during normal operation for disk peripherals for which Windows did not ...
32-bit File Access is necessary for the long file names feature introduced with Windows 95 through the use of the VFAT file system extension. It is available to both Windows programs and MS-DOS programs started from Windows (they have to be adapted slightly, since accessing long file names requires using larger pathname buffers and hence ...
Windows 3.1 with enhanced networking; designed to work particularly well as a client with the new Windows NT. [4] [5] Snowball — Windows for Workgroups 3.11: An updated version of Windows for Workgroups 3.1, which introduces 32-bit file access and network improvements. It also removes the Standard Mode, effectively dropping support for 16-bit ...
A 32-bit protected-mode MS-DOS kernel based on Windows' 386 enhanced-mode kernel: Windows 95 VMM "Panther" [5] June 1993: The 32-bit Windows subsystem that could run on top of "Cougar" implementing a subset of Windows NT's Win32 API, but a superset of the Win32s API. Windows 95 "Rover" [5] June 1993: Windows for Mobile Computing, based on "Panther"
Once in protected mode, the virtual device drivers transferred all state information from MS-DOS to the 32-bit file system manager, and then shut off MS-DOS. These VxDs allow Windows 9x to interact with hardware resources directly, as providing low-level functionalities such as 32-bit disk access and memory management.
The maximum amount of supported physical random-access memory (RAM) in Windows NT 4.0 is 4 GB, [34] which is the maximum possible for a 32-bit operating system that does not support PAE. [35] By comparison, Windows 95 fails to boot on computers with more than approximately 480 MB of memory.
However, the WINFILE.EXE program file was still included with Windows 95, 98 and Windows Me (16-bit executable), as well as Windows NT 4.0 (32-bit executable). The last 32-bit WINFILE.EXE build (4.0.1381.318) was distributed as part of Windows NT 4.0 Service Pack 6a (SP6a) in 1999, while the last 16-bit WINFILE.EXE build (4.90.3000) was ...