enter: the partitionier asks you, if you want to create an empty partition table. Say "yes". (Hint: this ... er the line with "FREE SPACE" and hit enter.
# Create a partition with the size you need, but remember ... tition with "Done setting up the partition".
# Create other partitions on the same disk, if you like.
... to write the changes, with "Yes".
# Now pick "Create MD device".
# Use RAID1 and give the number of