2.4. Creating a File System on the Partition
Now that a blank partition has been set up, the file system can be
created. The most widely-used system in the Linux world is the second
extended file system (ext2), but with newer high-capacity hard disks,
journaling file systems are becoming increasingly popular. We will
create an ext2 file system.
Instructions for other file systems can be found at http://cblfs.cross-lfs.org/index.php?section=6#File_System.
To create an ext2 file system on the
CLFS partition, run the following as root:
mke2fs /dev/[xxx]
Replace [xxx] with the name
of the CLFS partition (sda5 in our
previous example).
![[Note]](../images/note.png)
Note
Some host distributions use custom features in their filesystem
creation tools (E2fsprogs). This can cause problems when booting
into your new CLFS system, as those features will not be supported
by the CLFS-installed E2fsprogs; you will get an error similar to
unsupported filesystem features,
upgrade your e2fsprogs. To check if your host system uses
custom enhancements, run the following command:
debugfs -R feature /dev/[xxx]
If the output contains features other than: dir_index; filetype;
large_file; resize_inode or sparse_super then your host system may
have custom enhancements. In that case, to avoid later problems,
you should compile the stock E2fsprogs package and use the
resulting binaries to re-create the filesystem on your CLFS
partition. To do this, run the following commands as root:
cd /tmp
tar xjf /path/to/sources/e2fsprogs-1.42.9.tar.bz2
cd e2fsprogs-1.42.9
mkdir build
cd build
../configure
make #note that we intentionally don't 'make install' here!
./misc/mke2fs /dev/[xxx]
cd /tmp
rm -rf e2fsprogs-1.42.9
If you created a swap partition, you will need to initialize it for
use by issuing the command below as root:
mkswap /dev/[yyy]
Replace [yyy] with the name
of the swap partition. If you are using an existing swap partition,
there is no need to format it.
The commands listed below are specific to the Cobalt MIPS systems, they have a special requirement to have a ext2 Revision 0 for the boot partition. To make sure you satify this requirement, use the commands listed:
mke2fs -r 0 /dev/hda1 mke2fs /dev/hda2 mkswap /dev/hda3