Hello! It should work. The reason for this is that Windows 7 needs the CSM to be enabled anyway. https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/Unable-to-Install-Windows-7-without-CSM-support-enabled-in-BIOS/ta-p/1038089
I looked your laptop up and it originally shipped with Windows 7 or 8, so... https://www.lenovo.com/in/en/laptops/lenovo/b-series/b590/ All you need to do is select CSM/BIOS-only mode in the UEFI/BIOS setup. https://forums.lenovo.com/t5/Lenovo-B-and-G-Series-Notebooks/Can-not-enter-in-BIOS-Lenovo-B590/td-p/1279403 >From this forum topic it seems like the standard keys, like F1 or F2, don't work anymore. At least not on this specific Lenovo laptop. Were you able to enter the UEFI/BIOS setup? Try to find something about boot options, then choose "legacy", "BIOS" or "CSM" or something like this, maybe it's called "BIOS first" or so. There may also be a master option, allowing you to choose between "UEFI (only)", "CSM/BIOS (only)" and "both". Some possible naming conventions can be seen in this Dell article (which otherwise focuses on a totally different subject): https://www.dell.com/support/article/us/en/04/sln142679/how-to-enable-boot-from-dvd-option-with-uefi-boot-mode-enabled-windows-10-8-1-8 The explanation: * UEFI replaced the BIOS. * FreeDOS needs a PC with BIOS. * UEFI, in its transitional period, supported emulating the BIOS, which it calls CSM. * CSM stands for "compatiblity support module" and is essentially the BIOS emulation of UEFI. * Modern operating systems are UEFI only. * Windows 7 was a hybrid: the 64-Bit version could run from BIOS or from UEFI, but required the UEFI to load (but not run) the CSM anyways, since Windows 7 relied on the graphics BIOS to be accessible. * UEFI no longer loads the graphics BIOS, it was replaced by UEFI graphics output protocols (UGA and GOP) that need to be supported by the operating system. Unless, off course, CSM is loaded as requested (for Windows 7 compatibility; UEFI/BIOS setting - load, but not run), which also loads the graphics BIOS yet still allows a UEFI boot nevertheless. * UGA stands for "Universal Graphic Adapter", and it is the older protocol. * GOP stands for "Graphics Output Protocol", it is newer and replaced UGA. * Windows 8 was the first Windows to fully support UEFI. * Future PCs and laptops will be UEFI-only without CSM at all, since the transitional period will soon end. Some PCs don't have a CSM anymore already. Without a CSM there is no more BIOS. Without a BIOS, DOS and other BIOS-only operating systems cannot be used anymore. * For FreeDOS the CSM needs not only be loaded but also run. This is controlled by the boot option: "UEFI and BIOS, BIOS first" or similar. If you're interested much much deeper, read this from Rod Smith: http://www.rodsbooks.com/efi-bootloaders/csm-good-bad-ugly.html Hope this helped, A. On 16th of June 2019, 14:43, Marco Sulla wrote via Freedos-user: > Hello all. I downloaded and installed FreeDos 1.2, both the iso normal and the > USB full versions. I tried to boot them but nothing. I'm sure I can boot from > USB and cd since I have other media that works. > > I have a Lenovo B590. Maybe I have to set something in the BIOS? _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
