添加硬盘开机后 dmesg | grep sd sda: sda1 sda2 sdb: unknown partition table 创建硬盘信息 fdisk /dev/sdb 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 添加分区 Command action e extended p primary partition (1-4) p 添加主分区 Partition number (1-4): 1 First cylinder (1-2610, default 1): Using default value 1 Last cylinder or +size or +sizeM or +sizeK (1-2610, default 2610): Using default value 2610
Command (m for help): w The partition table has been altered!
Calling ioctl() to re-read partition table. Syncing disks.
格式化硬盘 [root@lmap ~]# mkfs -t ext3 /dev/sdb1 mke2fs 1.39 (29-May-2006) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 2621440 inodes, 5241198 blocks 262059 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=0 160 block groups 32768 blocks per group, 32768 fragments per group 16384 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000
Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 29 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.
创建mount目录 mkdir -p /mnt/CentOS01
mout到指定的目录 mount /dev/sdb1 /mnt/centos01
修改/etc/fstab文件，每次开机自动加载 vi /etc/fstab /dev/sdb1 /mnt/centos01 ext3 defaults 1 1
查看 [root@lmap ~]# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/mapper/VolGroup00-LogVol00 18156292 2574216 14644912 15% / /dev/sda1 101086 18382 77485 20% /boot tmpfs 517552 0 517552 0% /dev/shm /dev/sdb1 20635700 176200 19411264 1% /mnt/centos01
关于去除硬盘，修改/etc/fstab文件，删除相关内容
删除硬盘后如果不去掉/etc/fstab文件中的 /dev/sdb1 /mnt/centos01 ext3 defaults 1 1
重启后会出现 Give root password for maintenance (or type Control-D to continue):
解决办法： 这是所有的文件系统是只读的，，输入root密码后，使用这个命令 #mount -o remount,rw / 然后去掉/etc/fstab文件中的 /dev/sdb1 /mnt/centos01 ext3 defaults 1 1
reboot
命运掌握在自己手中
