![]() ![]() (it needed the "Universal" extensions to go from EFI to UEFI before they could use it on that platform) That's part of what UEFI was meant to solve, and why EFI was the solution for everything except x86/64 systems for so long. ![]() It's extremely difficult to drop to 16-bit mode, let alone add a 32-bit DOS extender after that, once you've jumped to 圆4 mode. There may still be issues with MBR, and 圆4 only booting. So you boot BIOS code (or at least a reasonably complete CSM) via UEFI, and then that boots DOS. What we need, (as far as I can see) to support this, would effectively be a BIOS implimentation built into a UEFI boot loader. When booted from Windows PE you can flash the BIOS.Īccording to this link it can be redistributed for non-commercial purposes (so OK to use a Windows PE made in a friend's Windows system). The standard procedure is to use your own or a friend's Windows 10 system to create a Windows PE system in a USB pendrive or CD/DVD disk. ![]() It is possible to run Windows PE also in UEFI mode. On a USB stick and use the F12 boot menu to access the firmware's Note:įor users with Dell computers, Dell recommends Linux users flash their BIOS following information located here (in short, put the. Instead if it is supported by your system. Be careful! You may want to consider updating microcode Warning: Flashing motherboard BIOS is a dangerous activity thatĬan render your motherboard inoperable! While the author of thisĪrticle has successfully run this procedure many times, your mileage However, there areĪ few utilities that allow you to upgrade your system BIOS under Most manufacturers provide a Windows executable or aīIOS executable that can only be run under Windows. This article aims on providing information on flashing your systemīIOS under Linux. I found this link, that might be helpful: (But you cannot flash the computer's BIOS that way.) There is also DOSBox, an x86 emulator with DOS. But we can expect that in the future many PC computers will be delivered with UEFI/BIOS systems that boot only in UEFI mode.Ī workaround to run FreeDOS would be to install it in a virtual machine and set this virtual machine to boot in BIOS mode alias CSM alias legacy mode. Handle (they are hard-coded to 512-byte sectors).Īlmost all UEFI systems today (2021) can boot also in BIOS mode alias CSM alias legacy mode. Hard disk manufacturers are already (2010 and later)Ĭoming out with hard disks with large sectors, which BIOS does not UEFI uses a GPT table instead of the MBR. Many motherboard manufacturers are replacing BIOS+MBR with UEFI+GPT. FreeDOS assumes a BIOS, and does not work Note that many new (2010 and later) computers boot using UEFI, which UEFI is an acronym for Unified Extensible Firmware Interface. The FreeDOS wiki page /wiki/index.php/UEFI tells us that it does not work: FreeDOS assumes a BIOS, and does not work with UEFI ![]()
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