33 lines
1.1 KiB
Markdown
33 lines
1.1 KiB
Markdown
# Repack linux ISO
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Commands expect to be in a root shell
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## Install needed tools
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mkisofs xorriso isohybrid
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## Editing ISO image
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create workspace
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`mkdir /tmp/custom_iso`
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Mount image and extract it since it is read only
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`mount -t iso9660 -o loop ~/original.iso /mnt/`
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`tar cf - /mnt/. | (cd /tmp/custom_iso; tar xfp -)`
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You can now modify the files for editing the bootloader config for example!
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## Back into an iso
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### Legacy only
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Rebuild iso with mkisofs
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`mkisofs -o output.iso -b syslinux/isolinux.bin -c syslinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -J -R -V "Custom ISO" /tmp/custom_iso`
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Bless it with isohybrid
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`isohybrid output.iso`
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### EFI and Legacy
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Rebuild iso with mkisofs
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`mkisofs -o output.iso -b syslinux/isolinux.bin -J -R -l -c syslinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -eltorito-alt-boot -e boot/grub/efi.img -no-emul-boot -graft-points -V "Custom ISO" /tmp/custom_iso`
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Bless it with isohybrid
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`isohybrid --uefi output.iso`
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### Sources
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https://gist.github.com/AkdM/2cd3766236582ed0263920d42c359e0f
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https://tuxfixer.com/mount-modify-edit-repack-create-uefi-iso-including-kickstart-file/ |