无法启动的Windows 10主机安装Ubuntu遇阻求助

Hey, I’ve dealt with this exact problem on Dell pre-built machines before—your hunch about RAID mode being the culprit is spot-on. Let’s walk through the fix step by step, since switching to AHCI directly can break Windows if you don’t prep first:

Step 1: Prep Windows 10 for AHCI Mode #

If you just flip the BIOS to AHCI without doing this, Windows will throw a blue screen on boot. Here’s how to avoid that:

• Fire up Windows, press Win + R, type regedit and hit Enter to open the Registry Editor.
• Navigate to this path:
  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci
• Find the Start DWORD on the right side, double-click it, change the value from 3 to 0, then click OK.
• Restart your PC and hit the BIOS key (usually F2 on Dell XPS models—watch the boot screen for prompts).
• Look for a setting called SATA Mode or Storage Configuration, switch it from RAID On to AHCI, save changes and exit BIOS.

Step 2: Re-Run Ubuntu Installation #

• Boot back from your Ubuntu USB drive.
• This time the installer should detect your existing Windows 10 installation, and you’ll see the "Install Ubuntu alongside Windows Boot Manager" option—this is the easy dual-boot setup you’re looking for.
• If for some reason it still doesn’t show up, you can use the "Something else" option to manually partition, but the alongside option should work now that AHCI is enabled.

Quick Troubleshooting Tip #

• If Windows blue-screens after switching to AHCI, reboot into BIOS again to confirm AHCI is selected, or double-check the registry change you made earlier (make sure Start is set to 0).

内容的提问来源于stack exchange，提问作者szm