Hummm.... Potentially there is a config difference, but that is exactly what I am doing. Booting from a NVMe SSD in a Pimoroni BASE, and doing my daily backups to a microSD, with a single full device partition and an ext4 filesystem. I am running the full desktop so the automounter is running. The microSD is mounting under /media. I did not have to make any config changes that I recall to get the microSD card recognized. I am running a different desktop manager (MATE) that might have some impact.Last time I tried that on a Pi 5 (booting from NVMe) the OS didn't notice that an SD card had been inserted which suggest that you cannot use it in that way.I could use the built in Micro-SD slot for the OS/System backup, right?
Hmm. Is your SD card present at boot? On my Pi 5 (Bookworm booting to commandline so no automount) if the SD card is present at boot it shows in /dev, lsblk, etc but not if I hotplug it afterwards. Yes even with dtparam=sd_poll_once=off in config.txt
Obviously if you want a full backup the microSD card would need to be sized appropriately. I am just backing up user data, using rsync, and only need around 20 GB of space.
I keep my user data on my (CM4 based) NAS. The NAS uses a BTRFS filesystem that is snapshotted daily and the snapshots are rsynced to a separate physical drive. The OS for the NAS is also on BTRFS and backed up in the same way though not as frequently.
Statistics: Posted by thagrol — Thu May 02, 2024 2:43 pm
