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https://en.wikipedia.org/wiki/Protected_mode
Protected mode may only be entered after the system software sets up one descriptor table and enables the Protection Enable (PE) bit in the control register 0 (CR0). Protected mode was first added to the x86 architecture in 1982, with the release of Intel's 80286 (286) processor, and later extended with the release of the 80386 (386) in 1985.
https://stackoverflow.com/questions/48743371/why-do-we-need-to-enter-32-bit-protected-mode-anyway
The reason why I am confused is that the tutorial I am reading first teaches me how to boot with 16-bit (some basic BIOS instructions) while it claims that "32-bit is better" which I totally agree and so we have to enter 32-bit protected mode.
https://en.wikipedia.org/wiki/Microsoft_Windows_version_history
In response to the impending release of OS/2 2.0, Microsoft developed Windows 3.1 (first released in April 1992), which included several improvements to Windows 3.0, such as display of TrueType scalable fonts (developed jointly with Apple), improved disk performance in 386 Enhanced Mode, multimedia support, and bugfixes. It also removed Real Mode, and only ran on an 80286 or better processor.
https://tech.slashdot.org/story/17/06/09/201228/why-does-microsoft-still-offer-a-32-bit-os
Why Does Microsoft Still Offer a 32-bit OS? More Login. ... but at least Windows 7 x64 cannot run 16bit software (unless I use XP mode), but 32bit version can. Also, some drivers or 32bit software does not work with 64bit OS. ... OS switches the CPU from Real to Protected mode (32-bit). OS then switches from Protected mode (32-bit) to Long mode ...2/5(367)
https://answers.microsoft.com/en-us/windows/forum/windows_7-security/uefi-secure-boot-in-windows-81/65d74e19-9572-4a91-85aa-57fa783f0759
UEFI Secure Boot in Windows 8.1 ... In protected mode, programs run on an OS rather than directly on the platform as in Real Mode. The OS interfaces with programs as a virtual platform and undertakes the task of centrally managing the allocation of memory and other hardware resources to programs, instead of each program having to manage the ...
https://www.tomshardware.com/reviews/processor-cpu-apu-specifications-upgrade,3566-4.html
Oct 15, 2013 · IA-32 Mode: 32-Bit And Virtual Real IA-32 (32-Bit) Then came the 386, which was the PC industry’s first 32-bit processor. This chip could run an entirely new 32-bit instruction set.
https://sourceforge.net/projects/freedos-32/
Apr 17, 2013 · Download FreeDOS-32 for free. Real-time, modular, microkernel-based operating system under development for i386. The first goal is to support 32-bit DOS protected mode applications made with DJGPP as well as native applications.2.7/5(3)
https://www.answers.com/Q/What_is_16_bit_protected_mode
no. protected mode runs the software in a "sand box" where nothing should be able to go wrong. 16-bit mode runs the program using 16-bit instead of 32-bit, for compatability. ... The 80386 allowed ...
https://www.sevenforums.com/tutorials/280434-internet-explorer-10-enable-32-bit-64-bit-ie10-windows-7-a-7.html
Jun 23, 2015 · Windows 7 Forums is the largest help and support community, ... Windows 7: Internet Explorer 10 - Enable 32-bit or 64-bit IE10 in Windows 7. ... Enhanced protected mode should do this on IE10 or 11 on Win7 or Win8. I'm building a lab right now, so I can check it shortly. This could be an IE11-only option, though.
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