Thank you all for your help. Yes, I wanted RAID on top of LVM. I have my system setup under LVM and I wanted to try a new installation with RAID. I have two disks, one is the sync-backup of the other. On each one, I have a standard partition for boot and the rest managed by LVM in one group for each disk.
My partitions for LVM had not the right type, so I changed it to 8e. Then I restarted the netinst-allation. I could activate LVM, but then, I did not get the opportunity to use LVM partitions as RAID devices. Maybe it does not make sense. Who knows tells me ! Cheers -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]