I installed the 18 firmware a while ago and shut down my NAS at xmas when i went away. When I came back it wouldn't boot.
Finally, after looking at it properly today I found a similar thread about the NAS not booting after an upgrade to 18.
I renamed the /sda2/lacie-boot/ file to sda1 (don't remember exactly what it was called) and the NAS booted back to v17 firmware. I tried the web upgrade again to 18.2 and it failed.
Now when I boot I get this
Warning: session_start(): open(/tmp/sess_c168a0a4f18d61d1361926042d920b65, O_RDWR) failed: Read-only file system (30) in /usr/htdocs/home.hm on line 2 Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /usr/htdocs/home.hm:2) in /usr/htdocs/home.hm on line 2
The homepage doesn't load anything and nothing is working.