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  • The upgrade might fail and the computer might not boot. If this occurs, you must bring the computer to the university IT support for inspection. Should this occur, your files are most likely safe. 
  • Use a wired network connection. USB connected mobile phone works too. 
  • If you use a wireless network for the upgrade, you need to reconfigure your network at the first login screen.If the upgrade script refuses to run, please contact cubbli-upgrade@helsinki.fi.
  • The upgrade script will ask for your sudo password, but will accept your university password even if you do not have sudo rights. 

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  • You need a working wired network connection to complete your first login to the computer after the upgrade.  
  • All wireless connections will be forgotten during the upgrade. If you use a wireless connection for the upgrade, you need to reconnect to your wireless network at the first login screen. 
  • Home directories and any files or folders under the /home/ directory will be saved. 
  • All mount points for RAID devices, external hard drives and network file shares (NFS and Cifs) will be kept as is. 
  • Active directory (AD) domain membership will be kept as is.
  • SSH public and private keys will be saved. 
  • All system modifications made with admin rights will be lost.
  • Any software installed in system directories will be gone. For this reason, you should install your research and development software under your /home directory instead of system directories.
  • There are some exceptions to the aforementioned rule, since /opt is not completely cleared out during the installation. However, please do not rely on this.
  • For some hosts (mostly Lenovo computers), the script will also install firmware updates.
  • The script will check for certain software installations which might cause significant data loss if deleted. In these instances, the installation script will refuse to run. Such instances include e.g. docker images and virtual machines. 
  • The first Linux image download (about 10GB) cannot be restarted. The image download will start from the beginning if interrupted.  

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