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To start Ubuntu in normal mode, you will need to boot your computer and wait for the login screen to appear. If you are presented with a login screen, enter your username and password and press Enter or Return to log in. If you are not presented with a login screen, your computer may be set to automatically log you in. In this case, you can simply wait for the desktop to appear.
If you are having trouble logging in to your account, or if you are unable to access the desktop, there are a few other things you can try:
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If you've made changes to the GRUB configuration and want to make them permanent, you can modify the /etc/default/grub file by following these steps:
After completing these steps, your Ubuntu system should always boot into normal mode by default.