VIRTUALBOX MAC OS X WINDOWS EBIOS ERROR CODE
This one is a nightmare to port, with the current glue code being almost as long as the tool itself. Tested with Bochs, QEMU, VMware, VirtualBox and two laptops with Dell and IBM/Lenovo BIOS. Debugging can still happen using Bochs or adding specific messages. There is no chance they can ever fit into the 2K sector with all the added features. Remove stuff that was just taken from isolinux.asm, but makes no sense for our version. Add meaningful comments to our main code. Adapt the file and comment style to ReactOS guidelines.This was done differently and inconsistently for isoboot and isobtrt. Check for the 0xAA55 signature to decide if the HDD contains a valid MBR.This way, we don't have to load it again when the user decides to boot from HDD. Load the HDD boot sector directly to 0x7C00 instead of trackbuf.Import latest isolinux.asm "API" from (latest version to date) and (latest version that came with all functions in ASM).Īmong other things, this brings us getlinsec_ebios (for reading setupldr.sys in hybrid/MBR mode) and BrokenAwardHack (for working around broken Award BIOSes).Add another entry point for hybrid booting (called by isombr) and the hybrid signature needed for isohybrid.The isohybrid tool also comes with GPT/UEFI support, but I'm not sure if this is enough for booting ISO-flashed USB drives on UEFI systems. This should be the steps needed for MBR booting. Check also that we support/implement support in FreeLDR for hybrid loading, similarly to what is done in, below the magic 0x7078c0fb number (labels _hybrid_signature and _start_hybrid).
VIRTUALBOX MAC OS X WINDOWS EBIOS ERROR PATCH
This runs standalone when built with the option ISOHYBRID_C_STANDALONE and can just patch any ISO with the necessary MBR bytes.
ReactOS ISOs should also support this to have a single file usable for both CDs and USB drives.
This way, an ISO can be burned to a CD but also flashed to an USB drive (using DD or Win32DiskImager) and is bootable in both cases. ISOs of modern Linux distributions contain MBR and GPT partition tables in the first (usually unused) sectors of the ISO file (see Isohybrid - Syslinux Wiki for more details). Make our ISOs flashable to USB drives ("isohybrid")