search for: gptmbr

The handover protocol uses ED as partition type but the comment above it still mentions EE Signed-off-by: Ruben Kerkhof <ruben at rubenkerkhof.com> --- mbr/gptmbr.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S index 7f450d3..8ab6b50 100644 --- a/mbr/gptmbr.S +++ b/mbr/gptmbr.S @@ -194,7 +194,7 @@ found_part: pushw %di /* 80 00 00 00 ee 00 00 00 - - bootable partition, type EFI (EE), no CHS informati...

Does anyone know how to install the gptmbr.bin onto a USB drive with Windows? I noticed that it would be really easy to modify the source of the installer to install gptmbr.bin instead of mbr.bin with the -m flag, but I'd like a solution that doesn't require me to maintain my own custom syslinux. I'm open to writing and submitti...

This patches add support for dynamic sectors to GPT MBR code. First 3 patches are trick and optimizations to gain some space for the forth patch. I have a modified version of SeaBIOS, some code and some script o test it I'll send on a different mail.

Op 2013-12-14 om 21:34 schreef Ruben Kerkhof: > Signed-off-by: Ruben Kerkhof <ruben at rubenkerkhof.com> > --- > mbr/gptmbr.S | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S > index 8ab6b50..7d98aee 100644 > --- a/mbr/gptmbr.S > +++ b/mbr/gptmbr.S > @@ -213,7 +213,7 @@ found_part: > > movzwl %cx,%eax /* Length of GPT entry */ > st...

...how the --mbr flag works and thought that there should be a way to do the same thing with the other mbr files. On Thu, Aug 4, 2016 at 2:41 AM poma <pomidorabelisima at gmail.com> wrote: > On 04.08.2016 00:58, Erik Sandberg via Syslinux wrote: > > Does anyone know how to install the gptmbr.bin onto a USB drive with > > Windows? I noticed that it would be really easy to modify the source of > the > > installer to install gptmbr.bin instead of mbr.bin with the -m flag, but > > I'd like a solution that doesn't require me to maintain my own custom > > s...

On 8/3/2016 18:58, Erik Sandberg via Syslinux wrote: > Does anyone know how to install the gptmbr.bin onto a USB drive with > Windows? I noticed that it would be really easy to modify the source of the > installer to install gptmbr.bin instead of mbr.bin with the -m flag, but > I'd like a solution that doesn't require me to maintain my own custom > syslinux. I'm open to...

On 04.08.2016 00:58, Erik Sandberg via Syslinux wrote: > Does anyone know how to install the gptmbr.bin onto a USB drive with > Windows? I noticed that it would be really easy to modify the source of the > installer to install gptmbr.bin instead of mbr.bin with the -m flag, but > I'd like a solution that doesn't require me to maintain my own custom > syslinux. I'm open to...

...in _my words_: Hello Ruben, Thank you for your patch to the Syslinux project. You spotted indeed a mismatch between code and comment. Reviewing your patch revealed other mismatch. Please rework your patch and submit it again to the mailinglist. Groeten Geert Stappers -- $ git diff -U5 mbr/gptmbr.S diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S index 7f450d3..327cfa1 100644 --- a/mbr/gptmbr.S +++ b/mbr/gptmbr.S @@ -191,12 +191,12 @@ found_part: xchgw %ax,%cx /* Set up %cx for rep movsb further down */ movw $dssi_out,%di pushw %di - /* 80 00 00 00 e...

...ese patches includes optimisations suggested by H Peter Alvin to save bytes: * Use memory-mapped I/O register to read keyboard shift flags * Don't reload DX from memory; move immediate byte to register Tested using mbr.bin. TJ (3): mbr: Ctrl-key press forces load from first hard disk gptmbr: Ctrl-key press forces load from first hard disk isohdpfx: Ctrl-key press forces load from first hard disk mbr/gptmbr.S | 14 ++++++++++++-- mbr/isohdpfx.S | 10 ++++++++++ mbr/mbr.S | 10 ++++++++++ 3 files changed, 32 insertions(+), 2 deletions(-)

Thanks for all the advice! I found the mirkes.de Tiny Hexer to be extremely helpful. "dd for windows by John Newbigin" seemed like it was going to be perfect for scripting but I wasn't able to get it to write only 440 bytes (it errors if I give it any blocksize that isn't a multiple of 512). I'm thinking that I may need to write my own little utility that reads the first

Signed-off-by: Ruben Kerkhof <ruben at rubenkerkhof.com> --- mbr/gptmbr.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S index 8ab6b50..7d98aee 100644 --- a/mbr/gptmbr.S +++ b/mbr/gptmbr.S @@ -213,7 +213,7 @@ found_part: movzwl %cx,%eax /* Length of GPT entry */ stosl - + rep; movsb /* GPT entry follows MBR e...

...project. > > You spotted indeed a mismatch between code and comment. > > Reviewing your patch revealed other mismatch. > > Please rework your patch and submit it again to the mailinglist. > > > > Groeten > Geert Stappers > > -- > $ git diff -U5 mbr/gptmbr.S > diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S > index 7f450d3..327cfa1 100644 > --- a/mbr/gptmbr.S > +++ b/mbr/gptmbr.S > @@ -191,12 +191,12 @@ found_part: > xchgw %ax,%cx /* Set up %cx for rep movsb further down */ > > movw $dssi_out,%di >...

On Sun, Dec 29, 2013 at 2:53 AM, Geert Stappers <stappers at stappers.nl> wrote: > Op 2013-12-14 om 21:34 schreef Ruben Kerkhof: >> Signed-off-by: Ruben Kerkhof <ruben at rubenkerkhof.com> >> --- >> mbr/gptmbr.S | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S >> index 8ab6b50..7d98aee 100644 >> --- a/mbr/gptmbr.S >> +++ b/mbr/gptmbr.S >> @@ -213,7 +213,7 @@ found_part: >> >> movzwl %cx,%ea...

This set of patches add some support for sector size >512. Currently it fixes extlinux, MBR for GPT and ext partitions. Other code is unaffected. This set of patches has been tested on a read Dell machine running a beta firmware.

...sector size and use it. If error or no EBIOS 512 is assumed. Buffer to read sector size if always allocated into the stack. CHS informations are not readed as not needed and same space not restoring %dl for drive number. Signed-off-by: Frediano Ziglio <frediano.ziglio at citrix.com> --- mbr/gptmbr.S | 42 +++++++++++++++++++++++++++++------------- 1 files changed, 29 insertions(+), 13 deletions(-) diff --git a/mbr/gptmbr.S b/mbr/gptmbr.S index b0c11b9..f0955b2 100644 --- a/mbr/gptmbr.S +++ b/mbr/gptmbr.S @@ -77,6 +77,12 @@ next: ADJUST_DRIVE pushw %dx /* 0(%bp) = %dl -> drive nu...

.../pxelinux.0 or bios/core/lpxelinux.0? Did you use the > precompiled binary right after extraction with no make commands? I compiled from sources. First gnu-efi, then syslinux. I can provide compile logs if you are interested. Then I installed with extlinux --install -s /boot and then copied in gptmbr into /dev/sda and re-created the initramfs bundle that this distrobution boots from . Then rebooted. Thanks for the quick response. -Evert-

...d so far I've succeeded but only by using GRUB on the MBR. Syslinux installs correctly, but because the USB key can only have one partition and its type is EFI protective, it isn't set to bootable on the MBR partition table and so syslinux (mbr.bin) doesn't boot. I've also tried gptmbr.bin which semi-works -- I don't get "missing operating system" as I do with mbr.bin, but the OS doesn't actually load either. My BIOS just reads the USB key a bit and then gets stuck. I was wondering what was the status of syslinux and GPT, and was wondering what testing I cou...

> There's 0 need to build MBRs for > EFI At least gptmbr.bin might come to mind (after all, GPT is part of the UEFI specs). Isohybrid with UEFI options perhaps too? > and I'm looking at why utils/ depends on mbr/ isohybrid(.pl) and mkdiskimage come to mind here? I'm not saying for certain these are the reasons for such dependencies, bu...

...r 0x80. The problem is some BIOSs report the wrong boot device number in DL but use the correct device number when the read_sector functions (AH=0x02/0x42, int 0x13) are called. This was discovered using the new diagnostic MBR: mbr-diag. mbr and isohdpfx are relatively straight-forward patches. gptmbr needed its ASCII strings shortened to create the space required for the new code. The space-saving changes were briefly discussed with H Peter Alvin on IRC prior to these patches being finalised. TJ (3): mbr: Ctrl-key press forces load from first hard disk gptmbr: Ctrl-key press forces load fr...

...p1/Software/rpmbuild/BUILD/syslinux-5.00/libinstaller' perl bin2c.pl syslinux_bootsect < ../core/ldlinux.bss > bootsect_bin.c perl bin2c.pl syslinux_ldlinux 512 < ../core/ldlinux.sys > ldlinux_bin.c perl bin2c.pl syslinux_mbr < ../mbr/mbr.bin > mbr_bin.c perl bin2c.pl syslinux_gptmbr < ../mbr/gptmbr.bin > gptmbr_bin.c make[1]: *** No rule to make target `../com32/elflink/ldlinux/ldlinux.c32', needed by `ldlinuxc32_bin.c'. Stop. make[1]: Leaving directory `/tmp1/Software/rpmbuild/BUILD/syslinux-5.00/libinstaller' make: *** [installer] Error 2 error: Bad exit...