diff --git a/install_sys.sh b/install_sys.sh
index 328329f..ea640ed 100644
--- a/install_sys.sh
+++ b/install_sys.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # Préparer le système
-wait $STAGE3_PID ; tar xjpf $CHROOT/$STAGE3 -C $CHROOT  --xattrs --numeric-owner
+tar xjpf $CHROOT/$STAGE3 -C $CHROOT  --xattrs --numeric-owner
 
 chmod 1777 $CHROOT/tmp
 mount -t proc /proc $CHROOT/proc
@@ -21,7 +21,7 @@ echo EMERGE_DEFAULT_OPTS='"'$EMERGE_DEFAULT_OPTS'"'  >> $CHROOT/etc/portage/make
 mkdir $CHROOT/etc/portage/repos.conf
 cp $CHROOT/usr/share/portage/config/repos.conf $CHROOT/etc/portage/repos.conf/gentoo.conf
 
-wait $SNAPSHOT_PID ; tar xjpf $CHROOT/$SNAPSHOT -C $CHROOT/usr
+tar xjpf $CHROOT/$SNAPSHOT -C $CHROOT/usr
 chroot $CHROOT /bin/bash -c "emerge --config sys-libs/timezone-data"
 echo "fr_FR.UTF-8 UTF-8" >> $CHROOT/etc/locale.gen
 chroot $CHROOT /bin/bash -c "locale-gen"
@@ -36,9 +36,9 @@ echo "sys-boot/grub -fonts -themes" >> $CHROOT/etc/portage/package.use/grub.use
 chroot $CHROOT /bin/bash -c "emerge grub"
 echo MAKEOPTS='"'-j${NJOBS}'"' >> $CHROOT/etc/genkernel.conf
 #chroot $CHROOT /bin/bash -c "genkernel all"
-wait $KERNEL_PID ; tar xjpf $CHROOT/kernel.tar.bz2 -C $CHROOT/
+tar xjpf $CHROOT/kernel.tar.bz2 -C $CHROOT/
 mkdir -p $CHROOT/lib/modules/
-wait $MODULES_PID ; tar xjpf $CHROOT/modules.tar.bz2 -C $CHROOT/lib/modules/
+tar xjpf $CHROOT/modules.tar.bz2 -C $CHROOT/lib/modules/
 chroot $CHROOT /bin/bash -c "grub-install /dev/sda"
 chroot $CHROOT /bin/bash -c "grub-mkconfig -o /boot/grub/grub.cfg"
 echo 'GRUB_CMDLINE_LINUX_DEFAULT="quiet"' >> $CHROOT/etc/default/grub