Thanks for all your help Simon - I've updated the Openboot default boot to be partition 3 (All disk) and it works. We're so close...
I did set things up slightly different to you, in that I created a separate /boot (partition 1, starting at cylinder 1, on each disk). After that I created swap and root partitions. After updating /etc/fstab for mirrored /boot & swap I can successfully boot into the system and can see that both are using the mirrors. However, when it comes to mounting / from the md the boot dies - at the bottom of this email I've pasted output of the last stage of the boot process. I can confirm that: I compiled kernel with all require storage drivers, RAID support & RAID1 compiled in I've set all of the RAID partitions as type 'fd'. I've created the RAID device /dev/md2 for / on /dev/sda4 & /dev/sdb4 I mkfs'd /dev/md2, mounted on /mnt and copied / to it using cp -ax / /mnt I updated /mnt/etc/fstab to use /dev/md2 for / I copied the existing silo.conf entry for my working, unmirrored root drive (sda5), gave it a unique silo label and added a statement root=/dev/md2 Here's what my .config has to say about RAID CONFIG_RAID_ATTRS=y # CONFIG_BLK_DEV_3W_XXXX_RAID is not set # CONFIG_SCSI_AACRAID is not set # CONFIG_MEGARAID_NEWGEN is not set # CONFIG_MEGARAID_LEGACY is not set # CONFIG_MEGARAID_SAS is not set # Multi-device support (RAID and LVM) CONFIG_MD_RAID0=m CONFIG_MD_RAID1=y CONFIG_MD_RAID10=m CONFIG_MD_RAID5=m CONFIG_MD_RAID6=m And here's the boot output as promised (after the message 'Unable to open an initial console', the system has most definitely hung up its guns!): md: Autodetecting RAID arrays. md: autorun ... md: considering sdb4 ... md: adding sdb4 ... md: sdb2 has different UUID to sdb4 md: sdb1 has different UUID to sdb4 md: adding sda4 ... md: sda2 has different UUID to sdb4 md: sda1 has different UUID to sdb4 md: created md2 md: bind<sda4> md: bind<sdb4> md: running: <sdb4><sda4> raid1: raid set md2 active with 2 out of 2 mirrors md: considering sdb2 ... md: adding sdb2 ... md: sdb1 has different UUID to sdb2 md: adding sda2 ... md: sda1 has different UUID to sdb2 md: created md1 md: bind<sda2> md: bind<sdb2> md: running: <sdb2><sda2> raid1: raid set md1 active with 2 out of 2 mirrors md: considering sdb1 ... md: adding sdb1 ... md: adding sda1 ... md: created md0 md: bind<sda1> md: bind<sdb1> md: running: <sdb1><sda1> raid1: raid set md0 active with 2 out of 2 mirrors md: ... autorun DONE. kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) readonly. Warning: unable to open an initial console. ________________________________________________________________________ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify [EMAIL PROTECTED] This email has been scanned for all viruses by the FFastFill Email Security System. ________________________________________________________________________
