* consistently use "medium" (singular), as only one is needed for
installation (installation-media.rst not renamed)
* add short introduction to recently added chapter "Installation Media"
* update minimum required flash drive storage space to 2 GB
* remove CD-ROM (too little storage space) but keep DVD
* mention explicitly that data get overwritten on installation media /
installation target disks
* mention that using `dd` will require root privileges
* add accidentally cut off text when copying from PVE docs
* add reference labels to currently needed section titles
* reword some paragraphs for completeness and readability
* mention all installation methods in the intro of "Server Installation"
* add the boot order as possible boot issue
* remove recently added redundant product website hyperlinks (as earlier
with commit 34407477e2)
* fix broken heading level of APT-based PBC repo
* slightly reorder sub-chapters of "Installation":
After adding the chapter "Installation Media" (d363818641), the chapter
order under "Installation" is:
1. System Requirements
2. Installation Media
3. Debian Package Repositories
4. Server Installation
5. Client Installation
But repos are more likely to be configured after installation, and for
other installation methods chapter links exist anyway. So to keep the
chapter order more logical, "Debian Package Repositories" is now moved
after "Client Installation".
Signed-off-by: Alexander Zeidler <a.zeidler@proxmox.com>
0e21bb2482