Dec 25, 2018  Hey, This is something I have been trying to get my head around for a while now. I have a Windows OS folder (extracted Windows 7 iso, basically) which has a bootmgr and things. However, whenever I start it up from Syslinux (chain boot from Linux), it doesnt like. Make Syslinux work with UEFI Windows 10. Ask Question 0. The last I checked (which was admittedly quite a while ago), the EFI version of SYSLINUX could not chain-load other EFI-mode boot loaders, and therefore could not be used to dual-boot with Windows. Unless this has changed, you'll need to use the EFI's built-in boot manager or switch.

Chain.c32 is a COM32 module for Syslinux. It can chainload MBRs, partition boot sectors, Windows bootloaders (ntldr, setupldr.bin and bootmgr), MS-DOS and PC-DOS io.sys, Freedos kernel.sys, isolinux.bin (only from ISOLINUX), grldr of grub4dos, or a bootsector saved to a file.

It can also swap BIOS drive numbers, or hide partitions (via partition's ID). Contents • • • • • • • • Numbering of Drives and Partitions Drive numbering Hard drive numbering starts at 0: • hd0: first hard drive (as seen by the BIOS) • hd1: second hard drive • hd2: third hard drive •. Floppy drive numbering starts at 0: • fd0: first floppy drive • fd1: second floppy drive The drive from which Syslinux is booted can be referred to with the parameter: • boot The drive and partition from which Syslinux is booted can be referred to with the parameter: • fs Find partition by uuid or label in all GPT partitions on all available drives: • label= mylabel • guid= myguid Note that label and guid work only on GPT partition tables; it is not filesystem but partition label and guid. Partition numbering The physical devices are counted starting at zero.

The partitions are counted starting at one. In a GPT scheme, there are only 'primary' partitions. Usually up to a maximum of 128 primary partitions can be created in one GPT device (the specification allows for more; it requires appropriate conditions). In a 'DOS' (aka.

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'traditional' or 'legacy' or 'MBR') partition table scheme, a maximum of 4 'primary' partitions can be created, or alternatively up to 3 'primary' partitions and one 'extended' partition, the latter containing 'logical' partitions. Please note that for devices with a traditional MBR ('DOS') partition table scheme, ' chain.c32' counts the 'logical' partitions starting from 'five', even if not all 'primary' slots are in used. GPT partitions are simply counted in order, starting at one. Partition numbers (short): • 0: MBR (default.) • 1-4: primary partitions • 5 and higher: logical partitions Partition numbers (long): • 0: MBR (default) • 1: first primary partition • 2: second primary partition • 3: third primary partition • 4: fourth primary partition • 5: first logical partition • 6: second logical partition • 7: third logical partition • 8: fourth logical partition • 9: fifth logical partition • 10: sixth logical partition • 11: seventh logical partition • 12: eighth logical partition •. Partition Numbering: First disk as seen by BIOS PRIMARY LOGICAL Numbering hd0 0 (MBR) hd0 1 First 1 hd0 2 Second 2 hd0 3 Third 3 hd0 4 Fourth 4 hd0 5 First 5 hd0 6 Second 6 hd0 7 Third 7 hd0 8 Fourth 8 hd0 9 Fifth 9 hd0 10 Sixth 10 hd0.