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---
title: "用DELL 6 i/R 建立RAID，
date: 2019-01-16T16:17:05+08:00
noSummary: false
featuredImage: "https://h.cowbay.org/images/post-default-11.jpg"
categories: ['筆記']
tags: ['ubuntu']
author: "Eric Chang"
---
買了一張 DELL 6/iR 低階的raid 卡
來測試把系統裝在硬體做的RAID上，
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都2019年了，
但是裝完之後，都會發生 " no boot device "的錯誤
測試過 ubuntu 16.04 / 18.04 , Debian 9 都是一樣的問題
翻了很久google，
先裝完系統，然後改用 ubuntu 18.04 Live DVD 開機
然後開啟 terminal
依序執行
```
sudo mount --bind /dev /mnt/dev
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
sudo chroot /mnt
```
chroot 完成之後，再進行下面的修改
```
找到
GRUB_CMDLINE_LINUX=""
修改成
GRUB_CMDLINE_LINUX="rootdelay=90"
```
存檔後離開，再更新 grub
```
```
然後重新開機，開機時間會比較久一點，但是這樣就可以正常開機了。
還是不懂，這到底是 ubuntu的問題， ？
