Originally Posted by DragonSlayer48DX
Thank you for letting us know you solved your problem. Could you kindly post details on your issue and the solution you found so it may help others in the future?
my efforts have become somewhat convoluted since i first started this thread (this is my first attempt at a raid). i started another thread at ubuntu forums here...
with the output from...
$ sudo mdadm --query --detail /dev/md*
$ sudo fdisk -l
someone there has recommended to run...
$ sudo mke2fs -t ext4 /dev/md0
and then add a line to /etc/fstab to permanently mount the raid.
subsequently i presume that my original raid 1 configuration was correct. however, before i received the reply to the other thread i dismantled that first raid 1 and attempted to reconstruct it a second time placing a grub into /dev/sdb1 instead of the default first hard disk. this was a mistake. /dev/sdb1 seems to have been the usb stick i was running the alternate ubuntu installer from and now have to remake the usb startup disk and i will repartition the usb sticks to be used as a raid 1 as i did before following the instructions here...
i will then try to run mke2fs as recommended in the other thread.
perhaps i should not have marked this thread solved and if possible i will unmark it as solved if you recommend it because i still have not got the raid working.
i was trying to break the problem down into smaller questions to move towards the final solution thus my questions about "is the raid 1 correctly configured?"
because i have never setup a raid before i am sort of feeling my way as i go.
thank you for asking about why/how it was "solved" i think its helpful to everyone for me to explain it including myself.