Restoring from BTRFS SD card

[Nachteule]

(16th Feb, 2019 07:47 AM)nickfx Wrote:  Not sure this works. I was able to add 'rescue' to cmdline.txt on xbianroot partition. But /etc/default/xbian-initramfs is inaccessible.

I booted with the changed cmdline.txt but still cannot access anything: USB hubs and ethernet aren't working, hence wifi isn't working and I can't use a directly connected keyboard either.

If initramfs is enabled, system should enter rescue mode. And of course, no network connection is available per default. You have to start ethernet manually, described in this text which is displayed when rescue mode is entered

Quote:LZ4 compression was set to enabled, by the way.

Ubuntu 18.10 apparently uses lz4 compression, too.

I think you mean does not use lz4 compression

Quote:Do you have any idea how I could access the files from my main computer (i.e. mounting the SD card)?

If your kernel does not support btrfs lz4 compression, I don't see any way to access files from your computer

You have only one choice:
If you have spare sd-card, you could flash a new XBian image onto and boot from this card.
After booting, put your old sd-card into an usb card reader, plug it to your Pi and mount that card from there