Am 29.01.20 um 23:32 schrieb Ram Ramesh: > On 1/28/20 10:09 PM, Reindl Harald wrote: >> >> Am 29.01.20 um 04:17 schrieb Ram Ramesh: >>> I have my entire debian 9.0 installation (root/usr/home etc) in two nvme >>> RAID-1 mirror. Is it possible to break them in to two degraded arrays? >>> >>> Specifically I want to do this. >>> >>> 1. Break current debian 9 full RAID1 into two degraded RAID1 A & >>> RAID1 B >>> 2. Boot only A and upgrade to debian 10 and make sure it works >>> 3. If it works, add B back into A and get Debian 10 in fully complete >>> RAID1 >>> 4. If it does not work, I boot B and add A back and get back debian 9 >>> in full working RAID1 >> i would simply remove one disk completly and in case i want to keep the >> upgraded system wipe it and resync afterwards or when i want back to the >> old one put it back and wipe the modified >> >> full resync, done > > Thanks. I thought of this, but both disk in question are nvme ssd with > manually added heat sink. It will be a hassle to remove and reinstall. I > think I will go with the back up rather than remove disk physically. why would you remove it phyiscally to remove it rom the array? seriously?