How to customize a Debian ISO using a preseed file with or without Cubic.
Hello.
I'm on Ubuntu 22.04 and I'm trying to extract all the files from a (bootable) Debian ISO,add some new files and then re-generate a bootable ISO image. I'm trying to accomplish this task using Cubic and without a graphical interface,but only giving the most appropriate commands on the terminal. Below you can see what I tried to do and the commands that I've issued. In both cases,for some unknown reasons,the preseed.cfg file that I have added does not stick. Can someone help me to understand why ? thanks.
1) Using Cubic. I've copied and pasted this preseed.cfg file :
d-i debian-installer/add-kernel-opts string intel_iommu=on d-i mirror/http/hostname string http.us.debian.org d-i mirror/http/directory string /debian d-i passwd/root-password password marietto d-i passwd/user-fullname string marietto User d-i passwd/username string marietto d-i passwd/user-password password a d-i passwd/user-password-again password a d-i user-setup/allow-password-weak boolean true
inside the folder : /home/ziomario/Scrivania/PassT-Cubic/Debian-new/custom-disk/preseed/
and then I've checked if it has been recognized and yes,it has been,according with this picture :
I suspect that I should do something else,according to what I read on Cubic : "reference these files in the disk boot configurations by prefixing them with /cdrom" : what does it mean ? I don't understand what I should do. So,at the end,when I have generated the ISO image,the debian installer asks me every question as usual,ignoring the question that I want to skip,according to the preseed file.
2) manually,issuing the following commands on the terminal,like these ones :
chmod +w -R /home/ziomario/Scrivania/PassT-Cubic/ISO/debian-live-11.5.0-amd64-xfce/d-i/ (I don't have a folder called install.386 or even install amd)gunzip debian-live-11.5.0-amd64-xfce/d-i/initrd.gz echo preseed.cfg | cpio -H newc -o -A -F debian-live-11.5.0-amd64-xfce/d-i/initrd gzip debian-live-11.5.0-amd64-xfce/d-i/initrd chmod -w -R debian-live-11.5.0-amd64-xfce/d-i/ cd debian-live-11.5.0-amd64-xfce/
at this point,since I don't have any md5sum.txt inside the ISO image of the debian live,I have generated this file using this command :
find -type f -exec md5sum "{}" + > md5sum.txt find -follow -type f ! -name md5sum.txt -print0 | xargs -0 md5sum > md5sum.txt chmod -w md5sum.txt at this point I ran this script to generate the ISO image : script.sh orig_iso=debian-live-11.5.0-amd64-xfce.iso new_files=debian-live-11.5.0-amd64-xfce new_iso=debian-live-11.5.0-amd64-mod-xfce.iso mbr_template=isohdpfx.bin # Extract MBR template file to disk dd if="$orig_iso" bs=1 count=432 of="$mbr_template" xorriso -as mkisofs \ -r -J --joliet-long \ -V 'd-live 11.5.0 xf amd64' \ -o "$new_iso" \ -isohybrid-mbr "$mbr_template" \ -partition_offset 16 \ -c isolinux/boot.cat \ -b isolinux/isolinux.bin \ -no-emul-boot -boot-load-size 4 -boot-info-table \ -eltorito-alt-boot \ -e boot/grub/efi.img \ -no-emul-boot -isohybrid-gpt-basdat -isohybrid-apm-hfsplus \ "$new_files"
The ISO image has been generated and it is able to boot,the preseed file is in the right place
I've looked inside the initrd file and I saw that it is there,you can see by yourself
and then I've tried to install Debian,but again,the preseed.cfg file is ignored.
Comments
-
Have you also asked Debian? https://www.debian.org/support
0
Categories
- All Categories
- 50 LFX Mentorship
- 103 LFX Mentorship: Linux Kernel
- 553 Linux Foundation Boot Camps
- 296 Cloud Engineer Boot Camp
- 119 Advanced Cloud Engineer Boot Camp
- 52 DevOps Engineer Boot Camp
- 53 Cloud Native Developer Boot Camp
- 4 Express Training Courses
- 4 Express Courses - Discussion Forum
- 1.9K Training Courses
- 18 LFC110 Class Forum
- 6 LFC131 Class Forum
- 25 LFD102 Class Forum
- 150 LFD103 Class Forum
- 17 LFD121 Class Forum
- LFD137 Class Forum
- 61 LFD201 Class Forum
- LFD210 Class Forum
- LFD210-CN Class Forum
- 1 LFD213 Class Forum - Discontinued
- 128 LFD232 Class Forum
- LFD237 Class Forum
- 23 LFD254 Class Forum
- 598 LFD259 Class Forum
- 102 LFD272 Class Forum
- 1 LFD272-JP クラス フォーラム
- LFD273 Class Forum
- 2 LFS145 Class Forum
- 24 LFS200 Class Forum
- 739 LFS201 Class Forum
- 1 LFS201-JP クラス フォーラム
- 3 LFS203 Class Forum
- 69 LFS207 Class Forum
- 300 LFS211 Class Forum
- 54 LFS216 Class Forum
- 47 LFS241 Class Forum
- 41 LFS242 Class Forum
- 37 LFS243 Class Forum
- 11 LFS244 Class Forum
- 34 LFS250 Class Forum
- 1 LFS250-JP クラス フォーラム
- LFS251 Class Forum
- 140 LFS253 Class Forum
- LFS254 Class Forum
- 1K LFS258 Class Forum
- 10 LFS258-JP クラス フォーラム
- 92 LFS260 Class Forum
- 130 LFS261 Class Forum
- 32 LFS262 Class Forum
- 79 LFS263 Class Forum
- 15 LFS264 Class Forum
- 11 LFS266 Class Forum
- 17 LFS267 Class Forum
- 17 LFS268 Class Forum
- 23 LFS269 Class Forum
- 203 LFS272 Class Forum
- 1 LFS272-JP クラス フォーラム
- LFS281 Class Forum
- 221 LFW211 Class Forum
- 167 LFW212 Class Forum
- SKF100 Class Forum
- 902 Hardware
- 219 Drivers
- 74 I/O Devices
- 44 Monitors
- 115 Multimedia
- 209 Networking
- 101 Printers & Scanners
- 85 Storage
- 761 Linux Distributions
- 88 Debian
- 66 Fedora
- 15 Linux Mint
- 13 Mageia
- 24 openSUSE
- 141 Red Hat Enterprise
- 33 Slackware
- 13 SUSE Enterprise
- 356 Ubuntu
- 477 Linux System Administration
- 41 Cloud Computing
- 69 Command Line/Scripting
- Github systems admin projects
- 95 Linux Security
- 77 Network Management
- 108 System Management
- 49 Web Management
- 66 Mobile Computing
- 23 Android
- 29 Development
- 1.2K New to Linux
- 1.1K Getting Started with Linux
- 536 Off Topic
- 131 Introductions
- 216 Small Talk
- 21 Study Material
- 817 Programming and Development
- 275 Kernel Development
- 508 Software Development
- 928 Software
- 260 Applications
- 184 Command Line
- 3 Compiling/Installing
- 76 Games
- 316 Installation
- 59 All In Program
- 59 All In Forum
Upcoming Training
-
August 20, 2018
Kubernetes Administration (LFS458)
-
August 20, 2018
Linux System Administration (LFS301)
-
August 27, 2018
Open Source Virtualization (LFS462)
-
August 27, 2018
Linux Kernel Debugging and Security (LFD440)