Hi, Steve McIntyre wrote: > > partition 2 seems broken and I can't mount it. > If I specify "-c isolinux/boot.cat" too, that fixes it.
Is there any new insight in this mystery ? If it is reproducible, then my understanding of partitions is in deep trouble. I'd need to investigate and compare an ISO with usable partition against one with unusable partition. ------------------------------------------------------------- Only remotely related: I found a new compliant partiton layout in the web. It could avoid the duplication of the EFI partition at the cost of a second ISO superblock and directory tree, if one would develop it further. openSUSE-13.1-NET-x86_64.iso has a mountable ISO filesystem in MBR partiton 2 and on the base device: MBR partition table: N Status Type Start Blocks MBR partition : 1 0x00 0xef 280 8192 MBR partition : 2 0x80 0x17 8472 573160 MBR partition path : 1 /boot/x86_64/efi Both ISO directory trees share most data files in the ISO. Only their files /boot/x86_64/efi are located in different content blocks. If i get it right, then https://github.com/openSUSE/kiwi/blob/master/modules/KIWIIsoLinux.pm lets mkisofs produce a first ISO with EFI FAT as first data file. The head of this ISO is cut off after the content of the EFI FAT. The rest (rump) of the first ISO is thrown away. The harvested ISO head is then brought as data file into the second, final ISO. There it is stored as second file after the EFI FAT, where partition 1 ends and partition 2 begins. (It gets hidden from the directory tree in the second ISO, but that's not really needed for the trick.) Because both mkisofs runs sort the other data file blocks to the same sequence, the ISO head gets retransplanted to an identical copy of its old rump. So partiton 2 becomes mountable as ISO 9660. This layout is still as wasteful as xorriso appended partition plus partition offset 16. But it should be possible to substitute the duplicate FAT image file in the second ISO by a missing FAT image file in the first ISO. The first ISO is only for mounting as partition 2. The El Torito boot image and FAT partition 1 are needed in the second, outer ISO. ------------------------------------------------------------- Have a nice day :) Thomas -- To UNSUBSCRIBE, email to debian-arm-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/25391545144987796...@scdbackup.webframe.org
