Hi, Zhang Boyang wrote: > I guess there is no ready tool can merge two ISOs together.
Not directly. But xorriso can load the meta-data of an ISO, manipulate that loaded model, and write the result as new ISO with the same boot equipment as found in the loaded ISO. As said, that would be no problem. Only enough disk space is needed, of course, and a Debian version >= 9 or locally built GNU xorriso >= 1.4.2. > After a quick look on dists/, > I think these files are in same format with theses on online mirrors, so > referring apt's documentation might be useful. Searching "Debian Packages.gz" brought me to https://wiki.debian.org/DebianRepository/Format which gives some hope for enlightenment. I will try to merge DVD-1 and DVD-2 but then need a way to verify that the result is fully functional. It looks like i have to merge these files from DVD-1: ./dists/bullseye/contrib/binary-amd64/Packages.gz ./dists/bullseye/main/binary-amd64/Packages.gz ./dists/bullseye/main/debian-installer/binary-amd64/Packages.gz ./dists/bullseye/contrib/binary-amd64/Release ./dists/bullseye/main/binary-amd64/Release ./dists/bullseye/main/debian-installer/binary-amd64/Release ./dists/bullseye/Release with these from DVD-2: ./bullseye/contrib/binary-amd64/Packages.gz ./bullseye/main/binary-amd64/Packages.gz ./bullseye/contrib/binary-amd64/Release ./bullseye/main/binary-amd64/Release ./bullseye/main/debian-installer/binary-amd64/Release ./bullseye/Release Bystanders: Do i miss something yet ? ---------------------------------------------------------------------- To demonstrate the rest of my sketch i tried this with DVD instead of DLBD (xorriso is GNU xorriso-1.5.2, equivalent to xorriso in Debian 11): DLBD_1=debian-11.2.0-amd64-DVD-1.iso DLDB_1_MOUNT=/mnt/dlbd_1 DLDB_2=debian-11.2.0-amd64-DVD-2.iso DLDB_2_MOUNT=/mnt/dlbd_2 RESULT=ALL_IN_ONE.iso sudo mkdir "$DLDB_1_MOUNT" "$DLDB_2_MOUNT" sudo mount "$DLBD_1" "$DLDB_1_MOUNT" cp -a "$DLDB_1_MOUNT/dists" merged_dists sudo umount "$DLDB_1_MOUNT" chmod -R u+w merged_dists sudo mount "$DLBD_2" "$DLDB_2_MOUNT" # TODO: # Merge the files in merged_dists with those from "$DLDB_2_MOUNT" xorriso -indev "$DLBD_1" \ -outdev "$RESULT" \ -map "$DLDB_2_MOUNT"/pool /pool \ -map merged_dists /dists \ -chown_r 0 /dists -- \ -chgrp_r 0 /dists -- \ -chmod_r a-w /dists -- \ -boot_image any replay \ -blank as_needed \ -stdio_sync off \ -padding included \ -compliance no_emul_toc sudo umount "$DLDB_2_MOUNT" xorriso -indev "$RESULT" -report_el_torito plain -report_system_area plain yields the typical boot jackalope (still escapes more coyotes than any other ISO partition layout): El Torito catalog : 4301 1 El Torito cat path : /isolinux/boot.cat El Torito images : N Pltf B Emul Ld_seg Hdpt Ldsiz LBA El Torito boot img : 1 BIOS y none 0x0000 0x00 4 5598 El Torito boot img : 2 UEFI y none 0x0000 0x00 5184 4302 El Torito img path : 1 /isolinux/isolinux.bin El Torito img opts : 1 boot-info-table isohybrid-suitable El Torito img path : 2 /boot/grub/efi.img System area options: 0x00000202 System area summary: MBR isohybrid cyl-align-off GPT APM ISO image size/512 : 16754652 Partition offset : 0 MBR heads per cyl : 0 MBR secs per head : 0 MBR partition table: N Status Type Start Blocks MBR partition : 1 0x80 0x00 0 16754652 MBR partition : 2 0x00 0xef 17208 5184 MBR partition path : 2 /boot/grub/efi.img GPT : N Info GPT disk GUID : 657a86211710b54c8e25101781372d9f GPT entry array : 12 208 overlapping GPT lba range : 64 16754598 16754651 GPT partition name : 1 490053004f00480079006200720069006400 GPT partname local : 1 ISOHybrid GPT partition GUID : 1 657a86211710b54c8e24101781372d9f GPT type GUID : 1 a2a0d0ebe5b9334487c068b6b72699c7 GPT partition flags: 1 0x1000000000000001 GPT start and size : 1 0 16754596 GPT partition name : 2 490053004f004800790062007200690064003100 GPT partname local : 2 ISOHybrid1 GPT partition GUID : 2 657a86211710b54c8e27101781372d9f GPT type GUID : 2 a2a0d0ebe5b9334487c068b6b72699c7 GPT partition flags: 2 0x1000000000000001 GPT start and size : 2 17208 5184 GPT partition path : 2 /boot/grub/efi.img APM : N Info APM block size : 2048 APM gap fillers : 0 APM partition name : 1 EFI APM partition type : 1 Apple_HFS APM start and size : 1 4302 1296 APM partition path : 1 /boot/grub/efi.img For details of the xorriso run, see man xorriso. For the report format, see xorriso -report_el_torito help -report_system_area help | less Have a nice day :) Thomas
