ThinkPad E14 Gen4无法引导Ubuntu安装U盘的问题求助

Hi there, sorry to hear you're stuck with this dual-boot setup issue. Let's walk through some common fixes that usually resolve this kind of problem with ThinkPads and Ubuntu USB booting:

• Disable Secure Boot temporarily: Windows 11 pre-installed systems almost always have Secure Boot enabled by default. While Ubuntu 22.04 does support Secure Boot, there are occasional compatibility hiccups with certain hardware. To disable it:

  1. Restart your laptop and press F1 or F2 (look for the on-boot prompt to confirm) to enter UEFI/BIOS settings.
  2. Navigate to the Security tab, find the Secure Boot option, and set it to Disabled.
  3. Save changes and exit (usually via F10).

• Ensure UEFI Boot Mode is enabled: Legacy/CSM mode can block UEFI-bootable Ubuntu USBs from working correctly. In UEFI settings:

  1. Go to the Boot tab.
  2. Confirm Boot Mode is set to UEFI (not Legacy or CSM).

• Check USB drive priority and port:

  • Sometimes even if you select the USB from the boot menu, the BIOS might not prioritize it properly. In UEFI's Boot Order section, move your USB drive to the top of the list.
  • Try switching to a different USB port—some laptops have better compatibility with USB-A ports over USB-C, or vice versa. Avoid using USB hubs; plug the drive directly into the laptop.

• Recreate the Ubuntu USB drive:

  • The Rufus configuration might have been off. Try using the DD Image mode (under the "Image option" dropdown) instead of the default "ISO Image" mode. This writes the image directly to the drive without extra processing.
  • Verify your Ubuntu ISO file isn't corrupted by checking its SHA256 sum against the one provided on Canonical's download page.
  • Try a different USB drive—preferably an empty 8GB+ drive in good condition (old or faulty drives often cause boot failures).

• Turn off Windows Fast Startup: This feature can lock the drive and interfere with booting into other OSes:

  1. Open Windows Control Panel, go to Power Options.
  2. Click Choose what the power buttons do.
  3. Click Change settings that are currently unavailable, then uncheck Turn on fast startup (recommended).
  4. Shut down your laptop completely (don't restart) before attempting to boot from the USB again.

• Update your BIOS: Outdated BIOS versions can cause compatibility issues with newer OSes. You can check Lenovo's official support resources for your ThinkPad E14 Gen4 to download and install the latest BIOS update—follow their instructions closely (usually you run the update from Windows).

Try these steps one by one, and test the USB boot after each change. If none of these work, let us know and we can dig deeper into other possibilities!

备注：内容来源于stack exchange，提问作者eccentricOrange