RAID 5 Install on Ubuntu Server 12.04

Question

Environment: Ubuntu Server 12.04, tried installing from bootable flash drive.
Got the following error: No root file system is defined. Please correct this from the partitioning menu.

I'm trying to set up a personal file server with software RAID 5. I just got three hard drives for this, but haven't found any solid documentation. I'm unsure what the basic way to partition my hard drives is. Can someone upload a screenshot of their "partition disks" screen so that I can compare with mine (attached)?

I tired to upload an image, but it said that I need reputation 10+ to post an image...

Should I set the bootable flag? Do I need a /home partition? A /boot partition? Should I "Use [my partition] as: Ext4 journaling file system"? Or make that field "physical volume for RAID"?

I am an engineer, but I have only a cursory knowledge of all-things-linux. If you know of any good learning resources I'd be happy to hear about those too (that way I don't have to blindly follow deprecated tutorials online).

Thank you,

References I've looked into:

• https://help.ubuntu.com/community/Installation/SoftwareRAID
• https://help.ubuntu.com/12.04/serverguide/advanced-installation.html
• http://forevergeeks.com/setup-ubuntu-server-with-raid-5/

Solution

Posting for Tarabyte

So it turns out that the error is pretty relevant. I selected my raid and then made it ext4 and mount to root /. I still can't post the screenshot that solved it, but here is a text summary of my "Partition disks" menu: RAID5 device #0 2.0TB software RAID device #1 2.0TB f ext4 / 512B unusable SCSI3 (my first hard drive)

1 primary B K raid #3

primary F ext4 /boot FREE SPACE #5 logical F swap swap SCSI3 (my 2nd hard drive) #1 primary B K raid SCSI4 (my 3rd hard drive) #1 primary B K raid Hope it helps –tarabyte

Comments

[tarabyte]

So it turns out that the error is pretty relevant. I selected my raid and then made it ext4 and mount to root /. I still can't post the screenshot that solved it, but here is a text summary of my "Partition disks" menu: RAID5 device #0 2.0TB software RAID device #1 2.0TB f ext4 / 512B unusable SCSI3 (my first hard drive) #1 primary B K raid #3 primary F ext4 /boot FREE SPACE #5 logical F swap swap SCSI3 (my 2nd hard drive) #1 primary B K raid SCSI4 (my 3rd hard drive) #1 primary B K raid Hope it helps

[tarabyte]

uugh, had to put my answer in my own comment because i have no reputation and cannot answer my own question, but i hope it helps regardless

[Jim Salter]

I upvoted your question, so you should have enough rep to answer and post images now.

[Argusvision]

Justt repost when you have enough rep. and I'll remove mine. (If you want to do it that way. It's your answer.)