Olivier

Hello I might be doubling down previous posts that state the same, so sorry if it's the case, no time for checking right now. I followed those guides to fix the mess that occurred during a failed upgrade: https://www.synology.com/fr-fr/knowledgebase/DSM/tutorial/Storage/How_can_I_recover_data_from_my_DiskStation_using_a_PC it's french but you should be OK (and learn a little french never hurts ) and when partition recovered I also had trouble logging to the desktop, due to tight access rights, so this guide helped https://superuser.com/questions/1191594/cannot-log-in-to-dsm-synology-nas/1191644#1191644?newreg=c972006f3d724685859db47d837ef430 I wish you luck

Same case as you, I'm stuck with "recoverable" in DS assistant and can't make a fresh install nor choose a .pat file. So I'm interested in your solution but I can't mount any partition probably because it's "linux raid". How did you do? I have 5 HDD in my N54L and I wouldn't like to lose data. In case of despair, would it work to buy a DS1517?