Read it more than once.

Is it compulsory to be online during installation using the iso?
Can I complete the install process without being online and source packages from repositories later through terminal?
Like for Grub or Grub2.

I'm referring to something like this during install:
package manager
A network mirror can be used to supplement the software that is included on the CD-ROM This may also make newer versions of the software available
Use a network mirror
no
yes

Hi linux-man,

Although not compulsory, it is useful to be connected to the Internet when installing from a live ISO, so that recent updates can be downloaded and installed automatically.

However, in answer to your question, you can install from a live ISO without being online, including the installation of your boot loader (GRUB or other). You will need to update your system at one point after installation, when you are connected to the Internet.

Cheers,

Rick

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Should I use apt-get update for the stuff I missed in that step?
I won't know specifically what needs updating.

Hey linux-man ... You're going to use Ubuntu, right ? Then you would do:

# apt-get update
# apt-get dist-upgrade

The first command updates your package database and the second command applies the newest versions of packages you have installed, while managing dependencies.

Cheers :-)

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Though, he’ll also have to install Ubuntu-Restricted-Extras if he wants to play music or videos.

It's probably more advisable to run sudo apt-get update followed by sudo apt-get upgrade, rather than use the dist-upgrade command.

Dist-upgrade can actually remove packages from the system and should only really be used, carefully, in the case of dependency conflict resolution (and you'll know if/when that happens ).

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I haven't been following here much but just download from: https://cdimage.debian.org/cdimage/u...y-live-builds/ be happy!

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Where will GRUB reside? Which partition? /boot ?

Hey linux-man,

GRUB installs itself to the MBR or ESP of the disk you specify as well as in /boot/grub.

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Why does it need to be in both places? i.e. MBR and /boot/grub
Does GRUB have to be associated with MBR at all? Can it be on its own (partition)? Advantages/disadvantages?

Are they advantages by not Chainloading?

In answer to your first question, GRUB itself is normally is installed to the MBR, as the BIOS looks at the MBR to find an OS to boot. So there needs to be something in the MBR, for the an OS of some type, to start at all (Windows or Linux). GRUB's configuration files are stored in the /boot/grub folder.

In answer to your second question, no, it does not have to be installed to the MBR, you can also install it, to the root partition's, partition boot sector.

Chainloading to my understanding is the act of starting an OS, other than Linux.

Hope this helps.

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Advantages/disadvantages?

Well, for one, if you want to change your root partition in some way (or install a different distro) and GRUB is installed to your root partition's boot sector, it may get wiped out. And therefore you system in that case may end up, unbootable. There may be other advantages/disadvantages as well but, I think I'll let others answer you further on that.

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How to avoid this? Better way?