![]() ![]() Thank you for your comment! Much appreciated. Right now VBox 6.1.2 happily allows to create guests starting from Windows 3.1. I guess this bug report may be closed as invalid. It would be great if VirtualBox showed some sort of notification/warning in case the user tries to install or use a guest OS which is not supported especially when paired with a CPU architecture which is known not to work with it (like Ryzen). Disabling nested paging may help but Windows 9x still remains an unsupported guest OS in VirtualBox. The bottom line is that this is not a regression and it's not something VirtualBox can fix. Intel has done such things too, various old operating systems no longer work on current Intel CPUs because they did things that they shouldn't have done, and they're no longer commercially important. ![]() You can complain to AMD but they will very likely tell you that this is a bug in Win9x that they have no desire working around. Please note that Windows 9x is known to have serious problems on fast CPUs.Īlso note that the first generation Ryzens had a bug related to VME (Virtual-8086 Mode Extensions) but VirtualBox works around that and AMD fixed that a long ago. But disabling nested paging does a lot, because it hides the TLB management problem referenced above. 120 MB minimum of free hard-disk space (Note that typical installation requires approximately 195 MB of free hard-disk space, but may range between 120 MB to 295 MB). The method Windows 9x uses to manage page tables does not work (reliably) on AMD Bulldozer and Ryzen CPUs, and it probably only works by accident on other CPUs.ĭisabling the I/O APIC of course does nothing, Windows 9x does not use it. System Requirements The install Windows 98, the minimum requirements are as follows: 486DX 66 MHz or better processor (Pentium recommended). I believe this blog post explains what the problem is. Google for "windows 98 ryzen crash" and you will see that this is not a problem with VirtualBox, it's a problem with Ryzen CPUs and Windows 9x, or more likely a bug in Windows 9x. Systems from the early days of USB sometimes even had issues with running a USB keyboard and mouse! They often had ps2 ports and ps2 was very reliable and USB was flaky! That was even in the early 2000s, it took some years before USB became more reliable, generally when Ps2 got completely phased out.Before opening such tickets, please do some due diligence first. But probably it will support booting from USB stick. ![]() I know with a USB floppy it actually goes to A: just like a regular floppy drive would. If the system doesn't support booting from USB stick, you could get a USB floppy and (I don't recall but it may even treat that as booting from a floppy). It doesn't matter whether you choose win98a or win98b for your boot disk. The windows installation will run very slowly and you'd solve that by loading smartdrv in config.sys but deal with that if/when you get there!Ī windows 98 boot disk is good or From what I recall, the allbootdisks site is better. And from there you'd start the windows installation. That puts a minimal DOS onto the hard drive so the hard drive boots. You'd use the SYS command sys c: to make the c partition of the hard drive bootable, that puts msdos.sys and boot.ini on there and writes a boot sector so it boots. There are DOS boot disks online, you can get an image of a DOS Boot disk and use Rufus to make a bootable DOS USB. You also need to make the hard drive bootable and from DOS you'd then run that EXE I mentioned. Or you can set up one hard drive with a small partition with the windows installation files. You can plug two hard drives in there and run the install on one and install to another. There's a directory in the ISO called i386, and in it is a file maybe called setup.exe or winnt.exe or something like that. I haven't used it but I guess it's effectively a hard drive). You can install Windows from a Hard Drive (or perhaps a CF with adaptor - effectively a hard drive. ![]()
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