Lubuntu 16.04安装后无法启动，双系统启动故障求助

Hey Marvin, sorry to hear you're stuck with this Lubuntu boot headache after setting up dual-boot with Windows 7 32-bit—let's walk through targeted fixes that should get your system up and running properly.

1. Leverage Recovery Mode to Repair Core System Files #

When you reach the GRUB menu, select Advanced options for Ubuntu, then pick the entry labeled with "(recovery mode)". Once in the recovery menu:

• Choose fsck first: this checks and repairs filesystem corruption that’s often the root cause of boot hangs. Confirm the operation by typing y when prompted.
• After fsck finishes, select root to access a root shell prompt. Run these commands to fix potential issues:
  • Refresh package lists: sudo apt update
  • Fix broken or incomplete packages: sudo apt -f install
  • Reinstall GRUB to ensure it’s properly configured for your dual-boot setup: sudo grub-install /dev/sda (replace /dev/sda with your main drive—use lsblk to list drives if you’re unsure which one it is)
  • Update GRUB’s configuration: sudo update-grub
• Type exit to return to the recovery menu, then select resume to test a normal boot.

2. Resolve Graphics Driver Conflicts #

Boot hangs or black screens with command prompts are often tied to graphics driver issues. From the recovery mode root shell:

• Purge any proprietary graphics drivers you might have installed: sudo apt purge nvidia* (use sudo apt purge fglrx* instead if you have AMD hardware)
• Reinstall stable open-source drivers:
  • For Intel GPUs: sudo apt install xserver-xorg-video-intel
  • For NVIDIA GPUs: sudo apt install xserver-xorg-video-nouveau
• Reboot your system with sudo reboot to apply changes.

3. Adjust Boot Parameters for Hardware Compatibility #

Adding specific boot flags can bypass hardware-related boot blocks. Here’s how:

• At the GRUB menu, highlight the Ubuntu entry and press e to edit boot commands.
• Find the line starting with linux, locate the quiet splash segment, and replace it with nomodeset (this disables automatic graphics modesetting, which fixes most black screen issues).
• Press Ctrl+X or F10 to boot with these temporary parameters. If this works, make the change permanent:
  • Open the GRUB config file: sudo nano /etc/default/grub
  • Modify GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="nomodeset"
  • Save and exit (press Ctrl+O, hit Enter, then Ctrl+X), then update GRUB: sudo update-grub

4. Verify Dual-Boot Partition Setup #

A misconfigured partition layout can also cause boot failures. From the recovery mode root shell:

• List all partitions to check their status: lsblk
• Ensure your Lubuntu root partition (usually labeled /dev/sdaX where X is a number) is mounted correctly. If not, mount it with: sudo mount /dev/sdaX /mnt (replace X with your root partition number)
• Double-check that both systems use the same boot mode: Windows 7 32-bit uses MBR, so Lubuntu should also be installed in MBR mode. If you accidentally installed it in EFI mode, this will cause conflicts—you may need to reinstall Lubuntu with the correct boot mode selected in your BIOS.

内容的提问来源于stack exchange，提问作者Marvin