![]() Fill out to 510 bytes and add boot signatureĭw 0xAA55 add boot signature at the end of bootloader The example below creates a simple bootloader creates a 2MiB raw image places the bootloader in the raw image and converts the raw image to a VDI. But at a minimum you'll need to place 0xAA55 in the last 2 bytes of the master boot record. You don't provide a minimal complete verifiable example showing a bootloader and how you get it into a VDI. Is there any way to solve this? Why is my virtual disk still not bootable? Edit So, I suppose it now means that the disk is bootable (because at the end of first sector is still signature 55 AA). Then, I basically filled from that address to the end of VDI file with pattern 55 AA. So, I found that data starts at some address (in my case it is 0x00200000 from the start of the VDI file). So, the start of VDI represents a header and the the rest is actual data stored on virtual drive. I was researching how VDI works and I found that it is usually dinamically allocated and that only the beginning of data is stored. So, I decided to put the binary machine code of my OS to virtual hard drive ( VDI file) and then set it to the top of boot order and load it instead of loading from virtual optical drive ISO. I don't want to convert my binary file to ISO every time. So, that is a lot of work I want to avoid. I found that I must compile C code to binary format, extract text section and save it as a file, then convert it to ISO, then mount it to virtual optical dive of diskete and then load my OS in VirtualBox. I am creating an operating system in assembler and C. I read all of them, but none of them answers my problem. My efforts have however raised some general questions…ĭuring installation of a VM when hardware choices are available such as monitor, video card, NIC etc.There are a lot of question on stackoverflow with the similar title. I take the point about OS/2 and no luck so far as machine stops during final stages of installation. I have managed to get eCS2.1 installed and working although it still needs work to get network access OK. VirtualBox has both OS/2 and eCS variants available when creating a new machine so I thought there would be some chance. Not quite a museum exhibit and it is proving to be quite a challenge. It…but, i do have an old laptop (used to be a daily driver) which Hardware (maybe eCS is better on both counts…have not tried Think its kernel quite knows what to do with some (lots) of today’s I think you may need to try to install it to bare metal of a certainĪge…that is, i don’t think many VM’s can support it… and i don’t I had forgotten what a pain these old installations were! Got it! Am now making progress and OS/2 Warp 4.52 installed but crashes before completion. Startup (I forget the exact verbiage, but it’s in the storage To the VM by adding the storage device and telling it to connect at It’s notĮnough to just put the disc in the drive, you have to connect the drive Physical CDs? Make sure the drive is connected to the VM. > Medium Found message and the drive is shown empty. > tried several CD-ROMs in the drive and every time I get the No Bootable ![]() > to install the OS but when I start I always get a Fatal error. > order, number of processors etc and have reached the point where I want I have created the machine, tweaked the boot Hi, I am trying my first virtual machine installation using VirtualBox
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