Translations:Install Gentoo on a bootable USB stick/20/en

Now format the new partitions. In the example we use the ext2 file system but another file system for the partition can be used if it is supported in the kernel. Notice that during the formatting operation, a label is assigned to the partitions. This is important because it will be how the root file system is detected later as the USB stick can be booted on systems where the drive letter allocation is completely different. This is related to the  option of the genkernel command line earlier.