Linux安裝時Device for boot loader installation的了解

if you choose dev/sda, it’ll use Grub (Ubuntu’s boot loader) to load all systems on this hard drive.

If you choose dev/sda1 (the ext4 partition your created for Ubuntu), Ubuntu need to be manually added to drive’s boot loader after installation. (for example, you previously have Windows installed on another partition of this drive, you’ll need manually add Ubuntu into mbr)

據我觀察在UEFI+GPT模式下貌似兩種選法都是可以的，或許第二種選法是某些人分區剛好是MBR的然後他們有時候裝了雙系統後無法引導可能就是由這個原因造成的。同盤裝雙系統時可能要特别注意這個東西。反正我也不會同盤雙系統，對于我來說能啟動就行了，不需要過度探究。

參考連結：

http://ubuntuhandbook.org/index.php/how-to-install-ubuntu/

https://blog.csdn.net/weixin_41053564/article/details/85724884

https://blog.csdn.net/weixin_33989780/article/details/86339230