On Wed, Jun 01, 2016 at 12:25:17PM -0500, Matt wrote:
I am trying to install Centos 7 on a couple 4TB drives with software raid. In the Supermicro bios I set UEFI/BIOS boot mode to legacy. I am using the Centos 7 minimal install ISO flashed to a USB thumb drive.
So I do custom drive layout something like this using sda and sdb.
Create /boot as 512 MB XFS raid1 array.
Create SWAP as 32 GB SWAP raid1 array.
Create / on 3.xxx TB XFS raid1 array.
I then get error.
"Your BIOS-based system needs a special partition to boot from a GPT disk label. To countinue, please create a 1MiB 'biosboot' type partition."
I cannot seem to create the biosboot partition so it is mirrored to both drives for redundancy. Any ideas how to do this? I want everything mirrored to both drives.
This is the relevant part of a kickstart of a raid1 setup I have used 2 weeks ago for a 3 members RAID1 on 6 TB hard disks (legacy boot, no UEFI).
<snip> clearpart --all --drives=sda,sdb,sdc --initlabel
#initial setup only #------------------ part biosboot.a --fstype=biosboot --size=1 --ondisk=sda part biosboot.b --fstype=biosboot --size=1 --ondisk=sdb part biosboot.c --fstype=biosboot --size=1 --ondisk=sdc part raid.1a --size=1500 --asprimary --ondisk=sda part raid.1b --size=1500 --asprimary --ondisk=sdb part raid.1c --size=1500 --asprimary --ondisk=sdc part raid.2a --size=32000 --asprimary --ondisk=sda --grow part raid.2b --size=32000 --asprimary --ondisk=sdb --grow part raid.2c --size=32000 --asprimary --ondisk=sdc --grow
#initial setup only #------------------ raid /boot --fstype ext4 --level=RAID1 raid.1a raid.1b raid.1c --device=md0 raid pv.raid1 --level=RAID1 raid.2a raid.2b raid.2c --device=md1 volgroup raid1 pv.raid1 logvol / --vgname=raid1 --size=16000 --name=root --fstype=xfs logvol /home --vgname=raid1 --size=1000 --name=home --fstype=xfs logvol swap --vgname=raid1 --size=1000 --name=swap --fstype=swap </snip>
Just adapt for 2 members and you partionning of choice.
Tru