在VM上进行更新后，如何为“ GRUB安装设备”选择什么？

这与更新后为“ GRUB安装设备”选择什么完全相同？-也许不是，因此提出了要求，因为我正在通过Vagrant在Virtualbox计算机上运行Ubuntu。

我无法更新包，所以我跑了sudo apt-get update那么sudo apt-get dist-upgrade。它显示以下消息：

The GRUB boot loader was previously installed to a disk that is no longer present, or whose unique identifier has changed for some reason. It is        │ 
 │ important to make sure that the installed GRUB core image stays in sync with GRUB modules and grub.cfg. Please check again to make sure that GRUB is    │ 
 │ written to the appropriate boot devices.                                                                                                                │ 
 │                                                                                                                                                         │ 
 │ If you're unsure which drive is designated as boot drive by your BIOS, it is often a good idea to install GRUB to all of them.                          │ 
 │                                                                                                                                                         │ 
 │ Note: it is possible to install GRUB to partition boot records as well, and some appropriate partitions are offered here. However, this forces GRUB to  │ 
 │ use the blocklist mechanism, which makes it less reliable, and therefore is not recommended.                                                            │ 
 │                                                                                                                                                         │ 
 │ GRUB install devices:                                                                                                                                   │ 
 │                                                                                                                                                         │ 
 │    [ ] /dev/sda (85899 MB; VBOX_HARDDISK)                                                                                                               │ 
 │    [ ] - /dev/sda1 (254 MB; /boot)                                                                                                                      │ 
 │    [ ] /dev/dm-0 (84833 MB; precise64-root) 

我猜第一个选择是正确的，就像对另一个问题的回答说的那样，但是我不喜欢猜测！如果有任何帮助或见解，我将不胜感激。

假设您没有使用UEFI，我认为没有理由这么做。还要假设您最初并未以某种幻想的方式进行设置，那么是的，第一个选项是正确的。通过选择/ dev / sda，它将被安装到BIOS应该能够启动的/ dev / sda的MBR中。