1st problem when installing f38

Bonjour, I am following advices given in answering my previous post "issue...." and I get f38 installer. The installer complains that there is a duplicate UUID on some disks : parts sde1 and sdf1 That's true! Running blkid gives: /dev/sde1: UUID="4a28174a-f38b-4938-233f-85f76ce585a8" UUID_SUB="88a5f939-72d4-b330-95e6-52fa0b826203" LABEL="dipankar:4" TYPE="linux_raid_member" PARTUUID="c257bd85-01" ^^^^^^^^^^^ /dev/sdf1: UUID="4a28174a-f38b-4938-233f-85f76ce585a8" UUID_SUB="99b46805-aa31-1711-21dc-89cb7177d025" LABEL="dipankar:4" TYPE="linux_raid_member" PARTUUID="c257bd85-01" ^^^^^^^^^^^^ But it is not the only case and it does not complain for the other one: /dev/sde2: UUID="5240f249-7feb-6832-6682-805f97c4abea" UUID_SUB="0e21ab45-27a2-f588-48a9-cd46d0dc6237" LABEL="dipankar:5" TYPE="linux_raid_member" PARTUUID="c257bd85-02" ^^^^^^^^^^^ /dev/sdf2: UUID="5240f249-7feb-6832-6682-805f97c4abea" UUID_SUB="5838df23-817e-f3cb-19f3-31da8d3e99d0" LABEL="dipankar:5" TYPE="linux_raid_member" PARTUUID="c257bd85-02" ^^^^^^^^^^^^ What does this mean? And what shall I do? The installer suggests to unplug these disks (or at list one of these disks) but, as you can see these disks are members of a raid array with the swap, /var and a crypted partition (sde1 and sdf1) and /home (sde2 and sdf2).... Is it possible to unplug one of the disks (say sdf) and make an install with a raid1 in degraded mode (+lvm) then, when the install is finished, to plug again the disk sdf and synchronise the partitions with mdadm? Moreover, I don't understand why the problem occurs only with sde1 and sdf1 and not with the other disks (sde2, sdf2 as already pointed) : I have 6 disks, and more partitions, paired in pairs as raid members. Thank you for lights. -- François Patte UFR de mathématiques et informatique Laboratoire CNRS MAP5, UMR 8145 Université Paris Descartes 45, rue des Saints Pères F-75270 Paris Cedex 06 Tél. +33 (0)6 7892 5822 http://www.math-info.univ-paris5.fr/~patte FSF https://www.fsf.org/blogs/community/presenting-shoetool-happy-holidays-fr...