由于在装软件，原来的20G空间不够使用，需要扩容操作。
1.关闭虚拟机
2.点击编辑虚拟机设置
选中硬盘，添加，硬盘，推荐，确定大小，完成。
2.启动虚拟机
查看磁盘使用情况：
[[email protected] ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 18G 3.0G 14G 18% / tmpfs 931M 80K 931M 1% /dev/shm /dev/sda1 291M 39M 238M 14% /boot /dev/sr0 3.6G 3.6G 0 100% /media/RHEL_6.5 x86_64 Disc 1
查看我们新的磁盘
对新加的硬盘进行分区，格式化，因为我的磁盘名称是/dev/sdb，所以输入 fdisk /dev/sdb命令：
[[email protected] ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xc2e1095b.
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
b edit bsd disklabel
c toggle the dos compatibility flag
d delete a partition
l list known partition types
m print this menu
n add a new partition
o create a new empty DOS partition table
p print the partition table
q quit without saving changes
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
x extra functionality (experts only)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-652, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-652, default 652):
Using default value 652
Command (m for help): p
Disk /dev/sdb: 5368 MB, 5368709120 bytes
255 heads, 63 sectors/track, 652 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: 0xc2e1095b
Device Boot Start End Blocks Id System
/dev/sdb1 1 652 5237158+ 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
下一步，查看
格式化：
待完成
。。。。眼疼的一笔
原文地址：https://www.cnblogs.com/hello-wei/p/11235157.html