similar to: grub config garbage after 512 bytes when chainloading via chain.c32

This adds (basic) support for GRUB stage2 image files. Loading a stage2 image will probably give you a GRUB prompt, with GRUB's "root" set at "(hd0)" (ie, entire first disk). Maybe the "root" will differ in less common setups. (One can of course select another disk and/or partition with GRUB's "root" command.) This has only been tested with version

Here is a patch that makes it possible to chainload GRUB2 core.img form chain.c32. It reuses the grub= parameter (used for chainloading GRUB Legacy stage2): - both loaded at 0x8000 - start execution at offset 0x200 (0x8200 in memory) GRUB2 allows to specify another "GRUB home dir" than the standard /boot/grub GRUB2 doesn't allow to change the configfile 'grub.cfg' name

created 2 partitions on laptop (/ and swap) formatted them. mounted both source and target (under /mnt on each machine) rsync -a / from desktop -> laptop (Note: OS on desktop is on sdb5. On laptop it's going to sda1) Now I need to put grub on mbr of laptop boot: linux rescue chroot /mnt/sysimage Here is my problem grub-install /dev/sda The file /boot/grub/stage1 not read correctly. Can

Background: I am in the habit of making bootable GRUB CDs with menus and copies of working kernels and initrds, particularly for multiple-boot testing machines with multiple distros and/or the Redmond OS. This has helped pull my fat out of the fire more than once when a system was rendered unbootable by hardware changes, or when Bill Gates decided the MBR should be taken over. This generally

Grub Legacy stage2 will read the install_partition variable from memory address 0x8208. We only need to change the value at 0x820a to the correct partition number: -1: whole drive (default) 0-3: primary partitions 4-*: logical partitions Signed-off-by: Gert Hulselmans <gerth at zytor.com> --- com32/modules/chain.c | 13 ++++++++----- 1 files changed, 8 insertions(+), 5

Allow the grub loader to (optionally) support using a GRUB menu file. For example chain fs grub=stage2,grub.conf will load GRUB's stage2 and pass the (absolute) path to the file "grub.conf" in the Syslinux filesystem to GRUB's stage2. The path is passed to stage2 in GRUB's device/partition syntax (eg, "(hd0,1)/foo"). Note that we don't check whether the

Hey guys, what I am trying to do is a chainload into grub2 installation in a DomU. So far I determined, PV-GRUB does not understand grub2''s grub.cfg notation. So I created a dummy menu.lst which has the needed root kernel and initrd rows and then referenced this to the DomUs config. The main intention to do this, is to be able to use kernel upgrades without touching the menu.lst for

Hi, we use PXELINUX in our product to show a boot menu on client computers, with options like "Boot from local hard disk", "Install Windows", etc. Unfortunately, a lot of computers seem to have broken BIOSes and won't boot with the LOCALBOOT command, and need to be booted with chain.c32 instead. We also have encountered some computers where it works only the other way -

From: Raphael S. Carvalho <raphael.scarv at gmail.com> My commit 09f4ac33 broke 'com32/lib/syslinux/disk.c' __lowmem doesn't work for declarations outside the core. Using __lowmem outside the core wouldn't have the desired effect, then lmalloc must be used instead to store dapa into the correct section (".lowmem"). Reported-by: Dark Raven <drdarkraven at

Hi, This must be a FAQ somewhere, although I am unable to find the answer quickly. We would like to have a bootable USB device offer the possibility to boot from the local disk. Unfortunately what happens when using 'chain.c32 hd1' is that GRUB works, but the GRUB configuration refers to it's disk as 'hd0', so booting an entry fails. One has to manually change 'root

filename to GRUB Legacy GRUB Legacy reserves 89 bytes for storing the filename of the configfile from memory address 0x8217 to 0x826f. We allow overwriting the default value (/boot/grub/menu.lst) when grubcfg=<filename> is used together with grub=<loader>. Examples: chain.c32 fs grub=/boot/grub/stage2 grubcfg=/boot/grub/grub.lst chain.c32 hd1,10 grub=/boot/grub/stage2

Improving chain.c32 help message Impact: Error message is more detailed In case of syntax error, the message is far more detailed and provides the same content as the documentation integrated in the source code. You can get this patch from Erwan's git repo: http://git.zytor.com/?p=users/erwan/hdt.git;a=commit;h=3fc3126d0c7df5701680e043c34f200166f24564 Add 'isolinux=' option to

Hi Folks , Can you please let me know if there is any fix for chain loading UEFI boot loader using chain.c32 in 6.04 release ? I am booting my system with syslinux.efi and want to chain load to windows or sex specific boot loader in the second stage . Thanks Robin

On Fri, 2016-12-23 at 08:43 -0500, Gene Cumm via Syslinux wrote: > On Thu, Dec 15, 2016 at 2:59 PM, Robin Mathews (robimath) via > Syslinux > <syslinux at zytor.com> wrote: > > > > Hi Folks , > > > > Can you please let me know if there is any fix for chain > > loading??UEFI boot loader using chain.c32??in 6.04 release ? > > I am booting my

i`ve found a bug in chain.c32 in v4.06. When i use isolinux it does not run windows7 installation, chainloading bootmgr. the error is: Can't find myself on the drive I booted from. chain.c32 from syslinux 3.xx works like a charm! chain.c32 from syslinux 5 shous tat this is not a com32 app

chain.c32 of SYSLINUX 3.82 does set the boot drive passed to the DL register to 0x80 and not to the boot drive (CD-drive). This can be a problem if you want to chainload grldr (grub4dos bootloader) from a CD and if you want to let grldr search for its menu.lst file on the CD. For more info: http://www.boot-land.net/forums/index.php?showtopic=8457 This 1 line patch fixes the issue (Thanks to

> On 06/30/16 14:19, Ady Ady via Syslinux wrote: > > > > BTW, any suggestions for an alternative name for this option, instead > > of "dlabel"? > > > > "disklabel" > > -hpa > > IMO, naming this option "disklabel" is not the best idea. The term, "disklabel", suggests different possible things to users,

On 06/30/16 14:19, Ady Ady via Syslinux wrote: > > BTW, any suggestions for an alternative name for this option, instead > of "dlabel"? > "disklabel" -hpa

Dear All: I am having trouble trying to dual-boot VMware and Linux, and I tried everything I could come up with. The situation is that /dev/sda is fully used by VMware and /dev/sdb is used by Linux. VMware uses Syslinux, so I thought this would be simple... However, it is not. The bootable FAT partition is too smal to have kernels in it. As a fallback I tried to chain-load GRUB, but that did not

On Thu, Dec 15, 2016 at 2:59 PM, Robin Mathews (robimath) via Syslinux <syslinux at zytor.com> wrote: > Hi Folks , > > Can you please let me know if there is any fix for chain loading UEFI boot loader using chain.c32 in 6.04 release ? > I am booting my system with syslinux.efi and want to chain load to windows or sex specific boot loader in the second stage . chain.c32 has a