Disable RST for Installing ubuntu 20.4 Dual boot

I recently bought a Lenovo ideapad S340 (Intel i7 and SSD) and try to install Ubuntu 20.04 aside Windows 10. Everything goes smooth until I am asked to disable intel RST. Back in the bios, i select to change from RST to DH_something and get a warning telling me that i will (may) loose all data... I wont do that! I wont install linux since ubuntu allows for rst. So my question : More and more pcs will use RST mode .. When can it be made available.. a month, a year, more?

Solution 1:

Intel RST

You've got a single SSD/HDD set up in RAID mode, and the Ubuntu installer won't recognize your SSD/HDD until you switch your disk setting in the BIOS from RAID to AHCI.

Making that switch comes with some problems though, as Windows will no longer boot.

You don't need to reinstall Windows...

Below, you'll find two different ways to solve this problem. Some users found Choice #2 to be easier.

Make sure to have a backup of your important Windows files!

Choice #1: Looking at this article https://samnicholls.net/2016/01/14/how-to-switch-sata-raid-to-ahci-windows-10-xps-13/ will show you how to make the change without having to reinstall Windows.

• Boot to Windows with your current SATA controller configuration
• Open Device Manager
• Expand Storage Controllers and identify the Intel SATA RAID Controller
• View properties of the identified controller
• On the Driver tab, click the Update driver… button
• Browse my computer…, Let me pick…
• Uncheck Show compatible hardware
• Select Microsoft as manufacturer
• Select Microsoft Storage Spaces Controller as model #
• Accept that Windows cannot confirm that this driver is compatible
• Save changes, reboot to BIOS and change RAID SATA Controller to AHCI
• Save changes and reboot normally, hopefully to Windows

Now you should be able to install Ubuntu in a dual-boot configuration.

Choice #2: See http://triplescomputers.com/blog/uncategorized/solution-switch-windows-10-from-raidide-to-ahci-operation/

•  Right-click the Windows Start Menu. Choose Command Prompt (Admin).
•  If you don’t see Command Prompt listed, it’s because you have already been updated to a later version of Windows.  If so, use this method instead to get to the Command Prompt:
• Click the Start Button and type cmd
• Right-click the result and select Run as administrator
• Type this command and press ENTER: bcdedit /set {current} safeboot minimal
• If this command does not work for you, try bcdedit /set safeboot minimal
• Restart the computer and enter BIOS Setup (the key to press varies between systems).
• Change the SATA Operation mode to AHCI from either IDE or RAID (again, the language varies).
• Save changes and exit Setup and Windows will automatically boot to Safe Mode.
• Right-click the Windows Start Menu once more. Choose Command Prompt (Admin)
• Type this command and press ENTER: bcdedit /deletevalue {current} safeboot
• If you had to try the alternate command above, you will likely need to do so here also: bcdedit /deletevalue safeboot
• Reboot once more and Windows will automatically start with AHCI drivers enabled.

Solution 2:

I successfully executed Choice #2 today on Lenovo Legion 7-15IMHg05 worked like a charm.

When changing the mode in the BIOS it warned that data on the disk would be wiped. Fortunately it is only a precaution that did not happen.

Of course, before this procedure that took 5 minutes I have a Restore disk, Microsoft Installation Media and did a full backup. Apparently, like always, when you have these you do not need them.

Also note that while in RST, Acronis 2020 boot DOES NOT see the internal drive (did not try 2021). EaseUS Todo Backup DOES see the internal drive. So while in RST mode for this pc model I would prefer EaseUS.

In my case, F2 during boot enters the Bios. F12 during the book gives boot device options. Ubuntu 18.04 is now installed side by side with windows.

Good luck to all. Mickey