When all else fails, I use a usb3 NIC until the correct NIC drivers are
found :-)
I think you can use another disk to install UEFI setup and boot your
raid from that install. If you do not have a spare disk, use USB to
experiment. They are cheap to buy and use as you only need a bare
install (on USB) to get started.
I converted several legacy to UEFI. However, none was from a RAID. I
always leave 32G in every install/boot disk for crunch work like this. I
recommend this. Even the machine that has RAID1 boot has first 32G on
each RAID1 disk unused (so that I can convert this install too into
UEFI, when I decide to)
Note that you need GPT for UEFI boot disk. So, separate disk/USB is the
best.
Ramesh
On 6/28/22 20:05, Alexander Shenkin wrote:
Thanks all,
Once I installed a graphics card, I was able to enable CSM and I've
booted successfully. Thanks everyone for your help. Converting to
UEFI would be a good idea, though not sure how easy that will be given
that /boot is a RAID1 array (how do you resize all the partitions, etc?).
Anyway, now looking for a network driver for this mobo... ;-)
On 6/28/2022 2:57 PM, Ram Ramesh wrote:
On 6/28/22 16:32, Alexander Shenkin wrote:
On 6/27/2022 7:26 AM, Pascal Hambourg wrote:
On 27/06/2022 15:57, Alexander Shenkin wrote :
CSM is greyed out. I think I need a graphics card
Is secure boot disabled? Legacy boot is not compatible with secure
boot.
There's no way to completely disable secure boot on this mobo. It's
an Asus Prime B560M-A.
Can you boot legacy install with UEFI boot disk? Have you tried
booting with sysrescuecd or some such to boot your installed OS?
Have you considered converting UEFI? CSM/Legacy boot support is
dropping steadily. Sooner or later it will be extinct.
Regards
Ramesh
