This guide will help you understand the procedure step by step.
Let's get started.
First after physical installation and basic BIOS check of the device you would like to see if the OS has recognized the disk.
To see attached SCSI devices, execute:
[root@jenova media]# lsscsi
You should see the new disk on the next SCSI channel.
To check the disk exists on the system run:
[root@jenova media]#fdisk -l
Next we will run:
[root@jenova media]# fdisk /dev/sdb
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) If you issue the p command, you will see any partitions that currently exist on the drive. You can see by the output above there are no existing partitions. This drive is un-partitionedd and unformatted. To create a new partition, use the n command.
Command (m for help): p Disk /dev/sdb: 50.0 GB, 50019202560 bytes 255 heads, 63 sectors/track, 6081 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System Command (m for help): n Command action e extended p primary partition (1-4) Partition number (1-4): 1 First cylinder (1-6081, default 1): 1 Last cylinder or +size or +sizeM or +sizeK (1-6081, default 6081): 6081
We can check the partition specifications we just entered by using the p command again. Command (m for help): p Disk /dev/sdb: 50.0 GB, 50019202560 bytes 255 heads, 63 sectors/track, 6081 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 6081 48845601 83 Linux
If you messed anything up, you can use the d command and specify which partition you want to delete. Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. Now that the partition has been created, you need to format the drive. The most common Linux formats are ext2 and ext3. You must specify which partition to format by calling the device and partition number: [root@jenova root]# mkfs -t ext3 /dev/sdb1 mke2fs 1.32 (09-Nov-2002) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) 6111232 inodes, 12211400 blocks 610570 blocks (5.00%) reserved for the super user First data block=0 373 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, 7962624, 11239424 Writing inode tables: done Creating journal (8192 blocks): done Writing superblocks and filesystem accounting information: done This filesystem will be automatically checked every 38 mounts or 180 days, whichever comes first. Use tune2fs -c or -i to override.In order to automatically mount a partition, you must edit the /etc/fstab file.
The fstab file tells Linux where to mount all partitions located within the system.
[root@roswell root]# vi /etc/fstab
We will mount the new partition as /media. Remember to create a directory named media, otherwise /etc/fstab won't be able to mount the partition.
The following line will be added to /etc/fstab:
/dev/sdb1 /media ext3 defaults 1 2
Next, issue a simple mount command providing the partition name:
[root@jenova]# mount /dev/sdb1 /media
You're all done! You will be able to access the /media folder immediately and after the machine reboots as fstab will automatically re-mount it for you. If you want to verify the partition is successfully present and mounted, use the following commands:
[root@jenova media]# mount
/dev/sda1 on / type ext3 (rw) none on /proc type proc (rw) none on /dev/pts type devpts (rw,gid=5,mode=620) usbdevfs on /proc/bus/usb type usbdevfs (rw) /dev/sda2 on /boot type ext3 (rw) /dev/sdc1 on /export type ext3 (rw) none on /dev/shm type tmpfs (rw) /dev/sdb1 on /media type ext3 (rw)
The red line shows our new drive freshly mounted.
You can check the space usage if you issue the following command.
[root@jenova media]# df -h
Filesystem Size Used Avail Use% Mounted on /dev/sda1 8.3G 2.4G 5.5G 30% / /dev/sda2 99M 26M 69M 27% /boot /dev/sdc1 16G 13G 2.3G 85% /export none 250M 0 250M 0% /dev/shm /dev/sdb1 46G 33M 44G 1% /media