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Thursday, 11 August 2011

Adding a SCSI Disk to a computer running Linux

Scenario: There is a SCSI disk with NTFS partition and this disk is to be added to a Linux box.
 
Step 1: Connect the SCSI disk to the Linux box.
 
Step 2: Type the command
#fdisk –l


 It will display partitions on all available disks, note the device name for the SCSI disk. Suppose the device name is /dev/sdb
 
Step 3: Start fdisk with /dev/sdb as argument
#fdisk /dev/sdb 

 Step 4 : To print the partition table for this disk
Command (m for help):


Device Boot Start End Blocks Id System
/dev/sdb1 * 1 4462   7 HPFS/NTFS
/dev/sdb2   4463 8924   F Win 95 Extended
/dev/sdb5   4463 8924   7 HPFS/NTFS
 
 
Step 5: Delete the partitions
Command (m for help): d
partition number (1-5): 1

Command (m for help): d
partition number (1-5): 2



Step 6: Create the required partitions (I will create one logical partition and will add that into my existing Linux file system)

Command (m for help): n

Command action
e extended
p primary partition
e
partition number (1-4): 1

Command (m for help): n
Command action
l logical (5 or above)
p primary partition
l
 
Step 7: Now I have created the required partition table for the disk, now I have to write the partition table to the disk.
Command (m for help): w
 
Step 8: View the new disk partition
Command (m for help): p
Device Boot Start End Blocks Id System
/dev/sdb1   1 8924   5 Extended
/dev/sdb2   1 8924   83 Linux
Quit fdisk program
 
Step 9: Format that partition and make file system
#mkfs.ext3 /dev/sdb2
 
Step 10: Create a directory to mount the partition
# mkdir /new_partition
 
Step 11: Mount the partition
#mount –t ext3 /dev/sdb2 /new_partition
 
Step 12: Add an entry in the /etc/fstab file so that the partition automatically gets mounted
/dev/sdb5 /new_partition ext3 defaults 1 2



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