linux删除硬盘，linux删除整个磁盘的命令

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linux虚拟机卸载新硬盘的方法

装载： 1、启动vm，选择vm->Settings,按向导添加一块SCSI磁盘。进入Linux系统。2、 fdisk -l 会看到有一块新的设置,如果你先前有一块硬盘(sda1, sda3...),新加的这块应该是(/dev/sdb)。[root@localhost ~]# fdisk -l Disk /dev/sda: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 * 1 13 104391 83 Linux/dev/sda3 14 1044 8281507+ 83 Linux Disk /dev/sdb: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table 3、分区：[root@localhost ~]# fdisk /dev/sdbDevice contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabelBuilding a new DOS disklabel. Changes will remain in memory only,until you decide to write them. After that, of course, the previouscontent won't be recoverable. The number of cylinders for this disk is set to 1044.There is nothing wrong with that, but this is larger than 1024,and could in certain setups cause problems with:1) software that runs at boot time (e.g., old versions of LILO)2) booting and partitioning software from other OSs(e.g., DOS FDISK, OS/2 FDISK)Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) Command (m for help): mCommand actiona toggle a bootable flagb edit bsd disklabelc toggle the dos compatibility flagd delete a partitionl list known partition typesm print this menun add a new partitiono create a new empty DOS partition tablep print the partition tableq quit without saving changess create a new empty Sun disklabelt change a partition's system idu change display/entry unitsv verify the partition tablew write table to disk and exitx extra functionality (experts only) Command (m for help): nCommand actione extendedp primary partition (1-4)pPartition number (1-4): 1First cylinder (1-1044, default 1):Using default value 1Last cylinder or +size or +sizeM or +sizeK (1-1044, default 1044):Using default value 1044 Command (m for help): wThe partition table has been altered! Calling ioctl() to re-read partition table.Syncing disks. [root@localhost ~]# fdisk -l Disk /dev/sda: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sda1 * 1 13 104391 83 Linux/dev/sda3 14 1044 8281507+ 83 Linux Disk /dev/sdb: 8589 MB, 8589934592 bytes255 heads, 63 sectors/track, 1044 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System/dev/sdb1 1 1044 8385898+ 83 Linux 4、格式化：[root@localhost ~]# mkfs -t ext3 /dev/sdb1mke2fs 1.39 (29-May-2006)Filesystem label=OS type: LinuxBlock size=4096 (log=2)Fragment size=4096 (log=2)1048576 inodes, 2096474 blocks104823 blocks (5.00%) reserved for the super userFirst data block=0Maximum filesystem blocks=214748364864 block groups32768 blocks per group, 32768 fragments per group16384 inodes per groupSuperblock backups stored on blocks:32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632 Writing inode tables: doneCreating journal (32768 blocks): doneWriting superblocks and filesystem accounting information: done This filesystem will be automatically checked every 31 mounts or180 days, whichever comes first. Use tune2fs -c or -i to override. 5、装载：[root@localhost ~]# mount /dev/sdb1 /u01/app/oracle[root@localhost ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup00-LogVol006.7G 5.8G 576M 92% //dev/sda1 99M 12M 82M 13% /boottmpfs 233M 0 233M 0% /dev/shm/dev/sdb1 7.9G 147M 7.4G 2% /u01/app/oracle 6、编辑fstab文件（不然重启电脑后系统将不会保存之前的挂载操作）： [root@localhost ~]# vi /etc/fstab /dev/VolGroup00/LogVol00 / ext3 defaults 1 1LABEL=/boot /boot ext3 defaults 1 2devpts /dev/pts devpts gid=5,mode=620 0 0tmpfs /dev/shm tmpfs defaults 0 0proc /proc proc defaults 0 0sysfs /sys sysfs defaults 0 0/dev/VolGroup00/LogVol01 swap swap defaults 0 0/dev/sdc1 /u03 ext3 defaults 1 1/dev/sdb1 /u01/app/oracle ext3 defaults 1 1# Beginning of the block added by the VMware software.host:/ /mnt/hgfs vmhgfs defaults,ttl=5 0 0# End of the block added by the VMware software卸载：[root@localhost ~]# umount /dev/sdb1[root@localhost ~]# df -hFilesystem Size Used Avail Use% Mounted on/dev/mapper/VolGroup00-LogVol006.7G 5.8G 576M 92% //dev/sda1 99M 12M 82M 13% /boot tmpfs 233M 0 233M 0% /dev/shm

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