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I'm trying to install Ubuntu 16.04 on my Dell XPS 15, but the installer can't find my SSD.

I want to do a dual boot, keeping Ubuntu and Windows 10.

Jeferson Pisoni
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2 Answers2

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You will need to switch the SSD controller mode in BIOS settings (press F12 when booting) from "RAID" to "AHCI", as right now Linux doesn't have the firmware support for the former mode, so cannot recognise the SSD drive.

Kaijia Feng
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  • Switching from RAID to AHCI did work, the issue is that every time I'll have to go through BIOS settings and switch RAID to AHCI. My idea is that it shows me the two options straight away, without having to keep going through BIOS setup. – Jeferson Pisoni Jun 13 '17 at 15:14
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    Did you save the BIOS settings after changes? – Kaijia Feng Jun 13 '17 at 15:20
  • Yes I did. I realised that if RAID is not on, Windows doesn't work. So if I need switch between the two OS, I have to switch from RAID to AHCI or vice versa. – Jeferson Pisoni Jun 13 '17 at 15:22
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    You will need to follow this guide https://samnicholls.net/2016/01/14/how-to-switch-sata-raid-to-ahci-windows-10-xps-13/ to switch Windows to AHCI. – Kaijia Feng Jun 14 '17 at 02:14
  • I did it, but didn't work. Instead I had to reset Windows 10 because it wouldn't load anymore. I believe I'll have to format my SSD and install Windows 10 from the beginning.. – Jeferson Pisoni Jun 14 '17 at 16:41
  • See my answer at https://askubuntu.com/questions/932997/why-cannot-the-ubuntu-installer-recognize-my-ssd/933042#933042 – heynnema Jul 18 '17 at 15:00
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The guide by Sam Nicholls doesn't quite work with the latest Intel RST driver. However, I used the following solution switching Win10 into safe mode before the BIOS change and switching it back after AHCI is correctly installed as the new default, and it works on my Dell XPS 8930.

Kevin in Colorado
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