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 -- Tru Huynh http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <http://lists.centos.org/pipermail/centos/attachments/20160601/07655cce/attachment-0004.sig>