掛載第二顆硬碟作業指引

令作業系統於開機時，自動掛載第二顆台硬碟。

電腦內硬碟摘要

• 第一顆硬碟（500GB)： /dev/sda
• 第二顆硬碟（2TB)： /dev/sdb

作業程序

1. 確認作業系統偵測到兩顆內接硬碟皆已存在：

$ ls /dev/sd*

2. 驗證第二顆硬碟的容量

$ sudo fdisk -l /dev/sdb

3. 查詢第二顆硬碟的 UUID 查詢 /dev/sdb 的 UUID

$ sudo blkid

4. 編輯「硬碟自動掛載設定檔」 /etc/fstab

   4.1 開啟設定檔

   $ sudo vim /etc/fstab
   

   4.2 加入設定

   # External Disk
   UUID=9279ede9-49f6-44fe-b481-261500f67675 /NAS ext4 defaults 0 2
   

   設定檔內完整的設定：

   # /etc/fstab: static file system information.
   #
   # Use 'blkid' to print the universally unique identifier for a
   # device; this may be used with UUID= as a more robust way to name devices
   # that works even if disks are added and removed. See fstab(5).
   #
   # <file system> <mount point>   <type>  <options>  <dump>  <pass>
   # / was on /dev/sda3 during installation
   UUID=328f484d-11f6-4135-ba2b-0ad26916dfd8 /        ext4    errors=remount-ro 0     1
   # /boot was on /dev/sda1 during installation
   UUID=d949a31c-0426-486d-a8a4-53a8d825ed5c /boot    ext4    defaults        　0      2
   # /home was on /dev/sda4 during installation
   UUID=fb7971a1-2fb7-48d9-8131-05cd840c9143 /home    ext4    defaults        　0      2
   # swap was on /dev/sda5 during installation
   UUID=9d5873a4-fa56-4a3b-bf3c-9b769e266097 none     swap    swap            　0      0
   # External Disk
   UUID=9279ede9-49f6-44fe-b481-261500f67675 /NAS    ext4    defaults    　 　　0      2
   

5. 設定掛載點 設定第二顆硬碟（/dev/sdb），掛載點位於目錄路徑： /NAS。

$ sudo mkdir /NAS

6. 第一次手動掛載硬碟

$ sudo mount /NAS

7. 驗證已成功掛載

$ sudo df -h

實作參考：

alanjui@Srv-01:/NAS1$ df -h
檔案系統 容量 已用 可用 已用% 掛載點
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 9.8M 1.6G 1% /run
/dev/sda3 47G 4.6G 40G 11% /
tmpfs 7.8G 61M 7.8G 1% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 7.8G 0 7.8G 0% /sys/fs/cgroup
/dev/sdb1 1.8T 841G 901G 49% /NAS1
/dev/sda1 945M 55M 825M 7% /boot
/dev/sda4 388G 1.1G 368G 1% /home
tmpfs 1.6G 116K 1.6G 1% /run/user/1000
tmpfs 1.6G 4.0K 1.6G 1% /run/user/108

alanjui@Srv-01:/NAS1\$ sudo blkid
/dev/sda1: UUID="d949a31c-0426-486d-a8a4-53a8d825ed5c" TYPE="ext4" PARTUUID="7b5d65b9-01"
/dev/sda3: UUID="328f484d-11f6-4135-ba2b-0ad26916dfd8" TYPE="ext4" PARTUUID="7b5d65b9-03"
/dev/sda4: UUID="fb7971a1-2fb7-48d9-8131-05cd840c9143" TYPE="ext4" PARTUUID="7b5d65b9-04"
/dev/sda5: UUID="9d5873a4-fa56-4a3b-bf3c-9b769e266097" TYPE="swap" PARTUUID="7b5d65b9-05"
/dev/sdb1: LABEL="NAS" UUID="9279ede9-49f6-44fe-b481-261500f67675" TYPE="ext4" PARTUUID="3c9b9d09-01"

$ ls -al /NAS1
....