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Until Syslinux 3.86, isolinux.bin contained a checksum that was calculated by 'core/checksumiso.pl'. The checksum is related to the patching of the boot info table. During May 2009, a commit by Peter deleted the checksumiso.pl file. The commit is: core: LZO compress the PM part of the core repo.or.cz/syslinux.git/commit/0d82b71304d596d80f3c4520f9dcf90048ca50b7 And so, since

...ybrid.c): GPT partition name : 1 49534f4879627269642049534f0049534f487962726964004170706c Archlinux (by libisofs): GPT partition name : 1 490053004f00480079006200720069006400 GPT partname local : 1 ISOHybrid (Lines from the upcomming boot equipment inspector of libisofs. See http://libburnia-project.org/wiki/ReportSystemArea ) To Kai Kang: I am willing to help with isohybrid.c but do not want to become its maintainer. I have my own implementation of isohybrid functionality in libisofs, and deem it better if both stay code-wise independent. Have a nice day :) Thomas

...pl' file is no longer > included. > How is the checksum of isolinux.bin calculated since then? By the ISO 9660 production program which patches in the Boot Info Table. The computation of checksumiso.pl can be seen in libisofs function make_boot_info_table(): https://dev.lovelyhq.com/libburnia/libisofs/blob/master/libisofs/eltorito.c#L1252 (without Javascript https://dev.lovelyhq.com/libburnia/libisofs/raw/master/libisofs/eltorito.c you have to hop to the line yourself. Sorry. GitLab. Urghhh ...) libisofs does not pad to full blocks of 2048 bytes, like checksumiso.pl did. But the iso...

Thomas Schmitt via Syslinux said on Sat, Oct 24, 2015 at 12:56:49AM +0200: >Needed is a EFI FAT image > 32 MiB and a new xorriso (available >on demand). My test script on RHEL 7.1 creates that even if I could make it smaller as the kernel + initrd fits in less than 32 MB. So let me make that try first ! o I changed myline in the script to dd a 30 MB image file, burt the ISO with it, and

...-as mkisofs ...your.genisoimage.arguments... >Let's see whether my emulation knows all your options. # ./mkisouefi 30000+0 records in 30000+0 records out 30720000 bytes (31 MB) copied, 0.0786484 s, 391 MB/s mkfs.fat 3.0.20 (12 Jun 2013) GNU xorriso 1.4.1 : RockRidge filesystem manipulator, libburnia project. Drive current: -outdev 'stdio:testuefi.iso' Media current: stdio file, overwriteable Media status : is blank Media summary: 0 sessions, 0 data blocks, 0 data, 33.0g free xorriso : WARNING : -volid text does not comply to ISO 9660 / ECMA 119 rules xorriso : FAILURE : -as mkisofs: U...

When call isohybrid with option '-u', it overflows on a 32 bits host. It seeks to 512 bytes before the end of the image to install gpt header. If the size of image is larger than LONG_MAX, it overflows fseek() and cause error: isohybrid: wrlinux-image-x86-64-20140505110100.iso: seek error - 8: Invalid argument Check the offset and call fseek() multi-times if offset is too large.

On 02/08/14 17:40, Thomas Schmitt wrote: > -eltorito-id "MAC" \ thanks a lot, that seems to allow isohybrid --mac to work \o/ for the curious this is the image before and after isohybrid as shown by gparted * output from xorriso xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project. Drive current: -outdev 'stdio:../image.iso' Media current: stdio file, overwriteable Media status : is blank Media summary: 0 sessions, 0 data blocks, 0 data, 16.5g free Added to ISO image: directory '/'='/chroot/livecd32/real-small' xorriso : UPDATE : 36 files add...

I posted this on the bugzilla page but I figured that on the mailing list it would get more attention. Please see http://bugzilla.syslinux.org/show_bug.cgi?id=49 for a description of my current issue. -- Thank you, Fernando Reyes GPG BDD75DD7 Mission Accomplish, Inc. http://missionaccomplish.com Email:design at missionaccomplish.com Tel: 7187100008 Cell: 3479275477

> Hi, > > > Not being compatible with EFI/GPT is already a problem for the Perl > > variant. > > The relation of both is: > > isohybrid.in/.pl is being left behind. > http://git.kernel.org/cgit/boot/syslinux/syslinux.git/tree/utils/Makefile > has: > SCRIPT_TARGETS += isohybrid.pl # about to be obsoleted > > isohybrid.c replaces it feature-wise

Hi, we are the developers of an alternative to mkisofs: program xorriso from libburnia-project.org . The current development cycle is about support for creating bootable CDs, DVDs, BDs. So we look for testers and for advise about ISOLINUX specifics. The example from the ISOLINUX wiki is supposed to work if you replace "mkisofs" by "xorriso -as mkisofs". I.e:...

...wiki/index.php/Hardware_Compatibility#Problematic_CD-ROM_controllers > I am sure some additional development muscle is very welcome and > needed I feel apt for ISO 9660 related issues, up to isohybrid with MBR, GPT, and APM. My boot knowledge is collected at http://bazaar.launchpad.net/~libburnia-team/libisofs/scdbackup/view/head:/doc/boot_sectors.txt Have a nice day :) Thomas

...an be burnt onto CD/DVD/BD so that BIOS boots it from such media. > # Xorrisos special .iso allows other partitions to be made: I would prefer a statement that -partition_offset 16 creates a partition table which parted is willing to edit. Indeed, the emerging .iso is quite special: http://libburnia-project.org/wiki/PartitionOffset But the refusal of parted with less special images is probably not to expect from all other partition editors. Have a nice day :) Thomas

....c. It should be "APM". ---------------------------------------------------------------- Known Variants up to now: - isohybrid.in -> isohybrid.pl from SYSLINUX, no EFI/GPT support - isohybrid.c -> isohybrid from SYSLINUX - libisofs/make_isohybrid_mbr.c from libburnia, needs isohdp[fp]x*.bin -> libisofs, xorriso from SYSLINUX - isohybrid.sh from SliTaz, no EFI/GPT support - iso2exe.c -> isohybrid.exe from SliTaz, no EFI/GPT support -------------------------------------------------------------...

...mg and just allowing isohybrid set all that works well. I have created two images which include and exclude these parameters and below is the output data. Image created without the use of /usr/bin/isohybrid: # xorriso -indev .uefi-testing.iso -toc xorriso 1.3.2 : RockRidge filesystem manipulator, libburnia project. xorriso : NOTE : Loading ISO image tree from LBA 0 xorriso : UPDATE : 36 nodes read in 1 seconds xorriso : NOTE : Detected El-Torito boot information which currently is set to be discarded Drive current: -indev 'uefi-testing.iso' Media current: stdio file, overwriteable Media stat...

.... > > How is the checksum of isolinux.bin calculated since then? > > By the ISO 9660 production program which patches in the Boot Info Table. > > The computation of checksumiso.pl can be seen in libisofs function > make_boot_info_table(): > > https://dev.lovelyhq.com/libburnia/libisofs/blob/master/libisofs/eltorito.c#L1252 > (without Javascript > https://dev.lovelyhq.com/libburnia/libisofs/raw/master/libisofs/eltorito.c > you have to hop to the line yourself. Sorry. GitLab. Urghhh ...) > > libisofs does not pad to full blocks of 2048 bytes, like checks...

...0 0 0 0 0 00000010 : 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 16 : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 My own cheat sheet: https://dev.lovelyhq.com/libburnia/libisofs/blob/master/doc/boot_sectors.txt says: --------------------------------------------------------------------- ... Apple Partition Map (APM) ... Sources: http://mjg59.dreamwidth.org/11285.html http://opensource.apple.com/source/IOStorageFamily/IOStorageFam...

...be > -e isolinux/efiboot.img \ > -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \ > instead of > -e isolinux/efiboot.img \ > -isohybrid-gpt-basdat \ I tried that and got this, which is what was expected I think: xorriso 1.3.8 : RockRidge filesystem manipulator, libburnia project. xorriso : NOTE : Loading ISO image tree from LBA 0 xorriso : UPDATE : 34 nodes read in 1 seconds xorriso : NOTE : Detected El-Torito boot information which currently is set to be discarded Drive current: -indev '/tmp/slint64-14.1.iso' Media current: stdio file, overwriteable Media...

On 07/11/2014 12:33 AM, Thomas Schmitt wrote: > Technical side note: > It turned out that the lseek(2) function of NetBSD does not work > with SEEK_END as expected from the manual. libburn had to resort > to a binary search with try-and-error to determine device sizes. > I did not check perl's sysseek() whether it suffers from the > lseek(2) shortcomming, but i would expect

...---- The explored ISO image stems from http://mjg59.fedorapeople.org/Fedora-LiveCD.iso Matthew advised it to me at his article "Anatomy of a Fedora 17 ISO image" http://mjg59.dreamwidth.org/11285.html The current state of my emerging description is at http://bazaar.launchpad.net/~libburnia-team/libisofs/scdbackup/view/head:/doc/boot_sectors.txt Newly emerging is the chapter "SYSLINUX isohybrid for UEFI and x86-Mac". Comments, hints, bug reports are welcome. Have a nice day :) Thomas

Good day, Matthew. I recently got stuck while building Syslinux as <uuid/uuid.h> doesn't exist on my system. The #inclusion was introduced in commit 2c3a24e5f4b807ec31595227afa59a818c060ca9. Whence does this file come, if you please? I'm assuming it is the Linux kernel's, but can't seem to understand the directory prefix, in that case. - Shao