I use everything really important now on my notebook, now I would like to make a backup of everything, just because I have never done something like this. So I go from the worst out, for example, if the device simply turns off and does not start or the hard drive breaks. I do not know how it would make one of the tray, I assume that I would not directly buy the same device so that the backup works 100% on the device. So it has to be such a backup so that I could import it almost every device. I would be very grateful for good answers.
Burn important data to the external USB hard disk or to DVD / Blu Ray discs. On blanks, no virus in the world can harm your data.
There are also network hard drives where you can store your data over the network. These also often run in the RAID system, i. It can even crash a hard disk, but your data is safe.
If your notebook breaks, you can fix it or buy a new one. Anyway.
Then you install the operating system again (made very fast by the USB stick) or it is already on it and you play back your data. Finished.
That's how I do it.
It is best to simply boot an external operating system, e.g. DVD or USB stick
https://linuxmint.com/...wnload.php
Is free (Linux Mint Mate)
Then plug in a free USB port of the laptop in the external housing housed hard drive (Conventional) and make a complete backup of the hard drive (data)
https://wiki.ubuntuusers.de/dd/
Everything for free you do not have to spend eurocent for it is also safe and you can give many options for backup the command dd where dd stands for disk dump.
I have 6 pcs in use, weekly I do an image backup with Clonezilla live CD on different ext. USB hard drives.
You demand that it is possible to play any backup on a new computer xbeliebigen, I think that is not tenable. That could already fail because of the different driver software required for the new computer, so that certain reworking will at least not be spared in such a case. In a new computer are guaranteed other component as installed on an older computer.
I've already moved Linux systems to another machine with a clonezilla restore, which fortunately took off immediately (in Linux, all common drivers are deposited in the core).
The important thing is that when a hard drive blows its life, you immediately get the PC running again with a newly installed hard drive and a restore from the backup, that's my requirement for a backup.
I see it so, a newly purchased computer should be fresh by a reinstallation of the operating system and the individual software fresh, because in the new installation is indeed on the technical conditions of the computer accordingly. Of course, it must always be possible to recover your "own files" from the backup.