Add fallback and shortcut to good-old dd instructions

Originally created by @sajolida on #10642 (Redmine)

  • Add shortcut from Debian and expert to Linux to prevent installing extra stuff [36]
  • Point people with Wheezy to dd
  • Explain briefly dd as alternative to GNOME Disks [61]
  • Add bug note about previous versions of GNOME Disks [61]

Feature Branch: web/10642-fallback-to-dd

Parent Task: #8592 (closed)

Edited by sajolida
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information