What commands did you use to create the RAID arrays?
> mdadm --create --level=10 --raid-devices=4 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
Are you booting from the RAID arrays?
What boot menu entry files and kernel options did you use?
Are you getting any errors related to detecting RAID or are the arrays just not detected during boot?
Nope, it just not detected.
When I assemble it by hand
> mdadm --assemble /dev/md0 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
all seems fine.
I guess not enough.
I have tried another thing by installing slackware directly on a stick and I see a line passing by mentioning it is trying to detect a raid array, not there yet.
I had to remove the disks from the system cause I have another problem while booting with grub.
Maybe it is off topic but here it goes;
My slackware install on the USB disk, /dev/sda, went fine.
Installed grub and it boots correctly.
When adding the disks for the raid array my system is not able to boot anymore
/dev/sda is the 1st disk in the array and /dev/sdd the last.
/dev/sde is now the USB stick with the slack-install.
How can I resolve this boot issue ?
I have tried to modify the boot commands without success.