What I want to do is customize Ubuntu through OEM, then, flash said OEM installation to an ISO so I can install it on others computers without having to redo my customization later. (also so that other can download said ISO and install it with my customizations)
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OEM INSTALL
There is an overview for Ubuntu OEM INSTALL:
https://help.ubuntu.com/community/Ubuntu_OEM_Installer_Overview
The OEM install sets up a computer so that first use the new owner will be taken to the system setup wizard where he will be able to set his location, keyboard layout, user name etc.
The OEM install does not create a custom ISO.
OEM INSTALL - IMAGE
One method of using OEM install to create a custom installer that might work for you:
Use "OEM install (for manufacturers)" on the installer drive to create your customized OEM install on a spare USB.
Start the OEM USB and install your extra programs and modify the setup as you wish, however home directory stuff like wallpaper and Bookmarks does not stick.
Create an image, (.img), of the USB using dd or similar.
dd if=/dev/sdx of=Spaceguy99.img
Where sdx is the OEM drive.
OS Installation
Use mkusb in Linux or Win32Diskimager in Windows to overwright your target disk with the extracted image.
When booting the target disk for the first time the user will be prompted for a new Location, Name, Password, etc.
This method is not as neat as building a custom ISO but is a lot simpler and gets the job done.
Note that an image file can be compressed but must be decompressed to be written. Suggest using the smallest Target drive that fit the data, A 32GB drive takes a long time to dd and write.
Isorespin may be a good choice for modifying ISOs
http://linuxiumcomau.blogspot.com/2018/05/introducing-isorespinsh-templates.html
C.S.Cameron
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