（2）OCR设备大小的问题：

第一次划分磁盘分区时，用于OCR和VOTING DISK的磁盘分区各为200MB，安装时报错，要求OCR不小于256MB，重新划分分区大小为500MB。

[root@rac1 ~]# fdisk /dev/sdc

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): d

Partition number (1-4): 4

Command (m for help): d

Partition number (1-4): 1

Command (m for help): d

Selected partition 2

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):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-652, default 652): +500M

Command (m for help): n

Command action

   e   extended

   p   primary partition (1-4)

p

Partition number (1-4): 2

First cylinder (66-652, default 66):

Using default value 66

Last cylinder, +cylinders or +size{K,M,G} (66-652, default 652): +500M

Command (m for help): n

Command action

   e   extended

   p   primary partition (1-4)

p

Partition number (1-4): 4

First cylinder (131-652, default 131):

Using default value 131

Last cylinder, +cylinders or +size{K,M,G} (131-652, default 652):

Using default value 652

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

Syncing disks.

[root@rac1 ~]# fdisk -l

Disk /dev/sdc: 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: 0x266a5e13

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1          65      522081   83  Linux

/dev/sdc2              66         130      522112+  83  Linux

/dev/sdc4             131         652     4192965   83  Linux