Red Hat LINUX 7.2 - OFFICIAL LINUX CUSTOMIZATION GUIDE Guida di Installazione Scaricare il pdf (Pagina 89)

Chapter 5. The ext3 File System 89

Tip

It is a good idea to write down which partitions (for example, /dev/hdb2) are meant for which ﬁle

systems (for example, /home/username) as you create each partition.

Next, you will need to specify what type of ﬁle system you intend to put on the disk because fdisk

creates partitions of type unknown by default.

To do this, type t followed by a partition number. Next enter the hex value for the ﬁle system type

you intend to install on the partition. For Linux swap partitions. the hex value is 82. For Linux ext2

or ext3 partitions, the hex value is 83. For other partition types, use the l command to see a list of ﬁle

system types and their hex values. Repeat this for each partition you created.

When you are ﬁnished making partitions, type w to save your changes and quit.

Warning

By typing w, you are permanently destroying any data that currently exists on the device. If you need

wish to preserve any data, type q to exit the program without altering the disk and back up your data.

5.2.2. Formating ext3 File Systems with mkfs

Once you have created partitions on the disk drive using a partitioning program such as fdisk, you

should use mkfs to create an ext3 ﬁle system on each partition.

To do this, log in as root and type:

/sbin/mkfs -t ext3 /dev/hdbX

In the above command, replace hdb with the drive letter and X with the partition number.

Warning

Using mkfs to format a disk partition will permanently destroy any data that currently exists on the

partition.

5.2.3. Assigning a Label with e2label

Once you have created and formated a partition, you should assign it a label using the e2label com-

mand. This allows you to add the partition to /etc/fstab using a label instead of using a device path,

thereby making the system more robust.

To add a label to a partition, type the following command

as root:

/sbin/e2label /dev/hdbX /mount/point

Where hdb is the drive letter, X is the partition number, and /mount/point is the mount point you

intend to use for the partition.

1. Adding a partition to /etc/fstab allows the partition to be mounted at boot time and simpliﬁes use of the

mount command.

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Red Hat LINUX 7.2 - OFFICIAL LINUX CUSTOMIZATION GUIDE Guida di Installazione Pagina 89