I could see only 1 DVD .iso listed in the list for amd64, yet made 3 DVD copies for Buster. Will more DVDs be added to Bullseye's list, or will there be only 1? I installed Buster in this machine in September, because an older machine running Stretch developed hardware problems then...but continued working until last week, and now that hardware produces only buzzes from the piezo sound device(not the system speaker).
I plan to try Bullseye in a 3rd machine.
Thanks for your advice on the Bullseye set.

Hi,

even just with 1 DVD you will likely be downloading way more stuff than what you will actually use. The normal recomended install method is to use the netinstall iso on a cdrom or usb stick. Note however with this method you will need a network connection during the install. See https://www.debian.org/download

Is there some particular reason you want to download DVDs?

Evo2.

Yes, I want to unplug the ethernet cable while installing packages.
This Buster installation was made from the bootable netinstall .iso, though I can't remember how the bootable USB drive was made...
Years ago, I had 8 .iso (CD image) files for Etch, and installed packages by mounting the .iso files to the cdrom mount point.
If fetching packages from internet mirrors requires root privileges, doesn't that create security risks for the system?
Thanks.

Hi,
No need to remember, that's what the installation instructions are for.
Fetching them doesn't, but in principle installing packages might. However, Debian repos and installation images are signed
so as long as you don't don't use packages from random places you should be fine.

Evo2.

The packages are cryptographically signed to confirm their authenticity as having came from the repository to your machine unchanged. Nobody but the Debian Developers in charge of the signing keys has them. Apt will refuse to install any package that does not have a valid key signing it. What creates the security problem is you not using the security line in your sources.list and getting all the updates from there you should be getting. Now if you are leaving it unplugged from the internet at all times then it is not needed.

Thanks, and my concerns began ~1999, when I installed RedHat 6,
and was taught then by RedHat, as I recall: "don't ever log in as the root user". So, the 3 Buster DVD .iso files were downloaded on Sunday, and then, today, were burned to DVD by K3B, which was very easy to use, and all done as an ordinary user.
Making bootable USB sticks is not as easy for me, and I think that the Buster netinstall .iso was made with Rufus, in Windows 7, which was the only system in this machine when bought from the pawn shop(Cash Converters). The Stretch machine was a Dell Optiplex, which locked me out needing a BIOS password..I think 'PSWD1'...Windows 7 got me to a youtube video showing a blue mainboard jumper being removed to clear the password prompt.
Buster was installed from internet mirrors the following day.
Do you have a favorite Linux tool to make bootable USB drives?

Hi,
As per the installation manual I use "cp".

See https://www.debian.org/releases/bull...copy-isohybrid
Things have change quite a bit in 20 years. I *highly* recommend you read the installation manual.

Evo2.