Migration from Raspberry Pi 3B+ to Raspberry Pi 5

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5

Pity :frowning:

Which ‘its’ method do you mean,

  • a specific Raspbian method
  • regular Debian method
  • the Yunohost migration

Getting back to your initial questions, numbered for easy reference:

  1. you proved not to work in your case.
  2. may offer another way than 3) by changing something on the system to make it compatible with RPi5. Maybe another reader will chime in; otherwise you could try asking over at the Raspbian forum (Yunohost is ‘plain Debian’, so if they can help you make a change that boots Debian/Raspbian off RPI5, it will be valid for Yunohost)
  3. sounds more desperate than it is, as long as your backup device is large enough of course. In my experience the backup on one device / restore on another works flawless. You’d restore your backup instead of running post-install on the new installation

To migrate from RPi3b to RPi5 using a backup:

  • backup the whole system+apps; pay attention that some apps (such as Nextcloud) by default don’t include data in the backup (it would unnecessarily get too large in the regular case of upgrades) → set BACKUP_CORE_ONLY=0 (‘readme’)
  • move the backup to secondary storage, so you have it somewhere safe
  • install Yunohost 12 on your RPi5, either by
    • installing Debian/Raspbian Bookworm + curl https://install.yunohost.org | bash , or
    • using a RPi-specific Yunohost image
  • move your backup + the json-file to /home/yunohost.backup/archives/ (after creating the directory if necessary)
  • instead of running yunohost postinstall, run yunohost backup restore name_of_backup

Here is a post with an earlier write-up for a somewhat similar situation: Server upgrade of the newe server - #8 by wbk (though that thread has some off-topic problems)

For context, about how much data is involved? Will you re-use the same SSD, or do you intend to replace that as well?