To edit Grub2 during the boot process try the following:

To edit GRUB2 during boot, you can try the following steps

1. Immediately after the BIOS splash screen during boot, press and hold the SHIFT button. This will display you grub containing a list of kernels and recovery options After the BIOS splash screen appears during the boot process, immediately press and hold the SHIFT key. This will display the grub containing a list of kernels and recovery options.

2. Press e to edit the first kernel displayed Press e to edit the first kernel displayed

3. Find the line ending with quiet splash. Add your boot option before these key words - i.e. so the line looks like […] nomodeset quiet splash Find the line ending with quiet splash. Add your boot option before these keywords - i.e. so the line looks like […] nomodeset quiet splash

4. Press CTRL + X to boot Press CTRL + X to boot

Reference Articles

https://askubuntu.com/questions/38780/how-do-i-set-nomodeset-after-ive-already-installed-ubuntu https://www.dell.com/support/kbdoc/zh-cn/000123893/%E6%89%8B%E5%8A%A8-nomodeset-%E5%86%85%E6%A0%B8%E5%BC%95%E5%AF%BC-%E8%A1%8C%E9%80%89%E9%A1%B9-%E7%94%A8%E4%BA%8E-linux-%E5%BC%95%E5%AF%BC