How to create a system image in Ubuntu?

Question

linux

there is a working computer, it has ubuntu on it, all the necessary packages, the most necessary infa
is it possible to make an image of the system with the help of some utility, and then make a bootable USB flash drive with it?

Answer 1

If no one will feel bad from idle working computer, then you can restart into recovery mode (or by some other method to ensure that the partition that is mounted in "/" (for example, "/dev/sda1") is read-only), and then "dd if=/dev/sda1 of=/dev/sdb1 bs=8M" flash drive.
Then you need to restart, boot into grub with your hands on a USB flash drive (something like “set root=(hd1,1)”, “linux /boot/vmlinuz3.2.1 root=/dev/sdb1”, “initrd /boot/initrd3.2.1 ”, “boot”, of course, replacing the numbers with the ones you need), in the system launched from the flash drive, play around with “/etc/fstab” to increase the speed of work, give the commands “grub-install /dev/sdb”, “update-grub” . Well, like, everything.

Answer 2

Not so long ago I did something similar with the help of Remastersys .
But the author stopped developing the project, so it's better to use his Relinux fork .

Answer 3

It seems to me that this sourceforge.net/projects/clonezilla/files/ is not the worst option.