grub问题

[theuserofshift8]

执行了两条命令
sudo apt-get update -y
sudo apt-get upgrade -y
然后出来一堆命令
-----------------------------

Setting up curl (7.22.0-3ubuntu4.12) ...
Setting up grub-common (1.99-21ubuntu3.17) ...
Setting up grub2-common (1.99-21ubuntu3.17) ...
Setting up grub-pc-bin (1.99-21ubuntu3.17) ...
Setting up grub-pc (1.99-21ubuntu3.17) ...
===============================================================
然后
┌──────────────────────────┤ Configuring grub-pc ├──────────────────────────┐
│ │
│ 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. │
│ │
│ <Ok>
===============================================================
然后
──────┤ Configuring grub-pc ├───────┐
│ GRUB install devices: │
│ │
│ [ ] /dev/xvda (8589 MB; ???) │
│ [ ] /dev/xvdb (25769 MB; ???) │
│ [ ] /dev/xvda1 (8578 MB; ???) │
│ │
│ ok │
===============================================================
这边不知道如何操作了
1我不知道该安装在哪里 根据上面的提示 说 “如果不知道 最好全部安装” 如果全部安装该如何操作？ 如果想选择第一个盘 该如何操作？
2 我尝试把光标停留在【 [ ] /dev/xvda (8589 MB; ???) 】上 然后按ok时 会提示 你妹选择任何东西

[poloshiao]

然后
──────┤ Configuring grub-pc ├───────┐
│ GRUB install devices: │
│ │
│ [ ] /dev/xvda (8589 MB; ???) │
│ [ ] /dev/xvdb (25769 MB; ???) │
│ [ ] /dev/xvda1 (8578 MB; ???) │
│ │
│ ok │
===============================================================
这边不知道如何操作了

1. 選 最優先開機 Virtual storage devices
1-1. 如果不清楚 哪個最優先 就選 /dev/xvda
2. 方法
2-1. 先用鼠標在範圍內 點一下
2-2. 按 tab 鍵 或 向上鍵/向下鍵 把 亮光條 指向 /dev/xvda 或 /dev/xvda
2-3. 按一下 space 鍵 在前面的 括號內 應該會 出現 星號
2-4. 再按 tab 鍵 或 向上鍵/向下鍵 到 ok 把 亮光條 指向 ok
2-5. 按下 Enter