導讀:后端開發后端開發 使用虛擬機時發現磁盤空間不夠了，需要掛載一個磁盤以供繼續使用，但是磁盤不是添加就可以使用的，還需要進行[v_notice]一、添加磁盤[/v_notice]添網站seo優化課程公司網站建設。

使用虛擬機時發現磁盤空間不夠了，需要掛載一個磁盤以供繼續使用，但是磁盤不是添加就可以使用的，還需要進行

[v_notice]一、添加磁盤[/v_notice]

添加加新硬盤重啟服務器

添加完之后就可以重啟機器了，如果你機器是開啟的，進入系統并不能看見你剛添加的那塊磁盤，只有等系統重啟，重新加載之后才會顯示安裝的那塊磁盤

[v_notice]二、進入系統[/v_notice]

使用root用戶進入系統

[v_notice]三、 查看硬盤信息[/v_notice]

[root@localhost ~]# fdisk -l //磁盤命令 Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000c4cb5 Device Boot Start End Blocks Id System /dev/sda1 * 1 64 512000 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 64 2611 20458496 8e Linux LVM Disk /dev/sdb: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xd0f5c869 Device Boot Start End Blocks Id System /dev/sdb1 1 2610 20964793+ 83 Linux Disk /dev/sdc: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000

可以看到這臺機器加載了三個磁盤sda、sdb、sdc 其中sda是初始磁盤，sdb已經初始化且經過使用，sdc是剛剛加載的，未格式化的新磁盤

[v_notice]四、創建新硬盤分區[/v_notice]

[root@localhost ~]# fdisk /dev/sdc #進入磁盤 Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x45a3cadb. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): m Command action a toggle a bootable flag #設定可啟動標記 b edit bsd disklabel c toggle the dos compatibility flag d delete a partition #刪除一個分區 l list known partition types #各分區類型所對應的ID m print this menu #菜單 n add a new partition #添加一個分區 o create a new empty DOS partition table p print the partition table #顯示該磁盤下的當前分區信息 q quit without saving changes #不保存退出 s create a new empty Sun disklabel t change a partition's system id u change display/entry units v verify the partition table w write table to disk and exit #保存退出 x extra functionality (experts only)

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