Re: ubuntu installer doesn't detect hard disk
Did any of you try to see if there is raid meta data present on the disk? If a disk has been used in fakeraid (biod raid) before, it keeps the meta data since most people only disconnect it and don't destroy the array properly. I'm not sure if it keeps the meta data if you destroy the array using the raid settings.
Anyway, formatting doesn't help in this case, since the meta data is kept.
What you can do from live mode to see if you are affected, is run this for disk /dev/sda (or change with /dev/sdX if the disk is called differently):
sudo dmraid -E -r /dev/sda
If it asks you if you want to remove meta data, this was the issue. Confirm and the installer will see the disk.
If it has meta data it's ignored so that you don't install on existing raid array and destroy your data.
PS. Also, if UEFI device is offered for boot, that means your board is UEFI capable, and you have to think carefully what you enable in BIOS since UEFI works in different way, especially if you plan to dual boot. There are still issues to be solved for UEFI dual boot.
If you are happy with the old ways, just disable UEFI in BIOS if you have that option, and you're good to go. The setting for the sata mode should be AHCI, works much better than IDE.
Darko.
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Ubuntu 18.04 LTS 64bit
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