diff --git a/add-right-fit-swap-for-laptop-hibernation-during-ubuntu-20.04-full-ZFS-install.md b/add-right-fit-swap-for-laptop-hibernation-during-ubuntu-20.04-full-ZFS-install.md
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+
+## create swap partition to permit Hibernate
+
+create a swap partition right sized for hibernation.
+
+add theses 2 lines in : */usr/share/ubiquity/zsys-setup*
+
+~~~{.shell}
+MEMSIZE=$(cat /proc/meminfo | grep MemTotal | awk -F' ' '{print $2}')
+SWAPVOLSIZE=$(( MEMSIZE / 1024 ))
+~~~
+
+like bellow : 
+
+~~~{.shell}
+	# Convert to MiB to align the size on the size of a block
+	SWAPVOLSIZE=$(( SWAPSIZE / 1024 / 1024 ))
+    
+MEMSIZE=$(cat /proc/meminfo | grep MemTotal | awk -F' ' '{print $2}')
+SWAPVOLSIZE=$(( MEMSIZE / 1024 ))
+
+	prepare_target "${TARGET}"
+	format_disk "${DISK}" "${PARTBASE}" "${PARTESP}" "${PARTBPOOL}" "${PARTRPOOL}" "${SWAPVOLSIZE}"
+	init_zfs "${TARGET}" "${DISK}${PARTBASE}${PARTBPOOL}" "${DISK}${PARTBASE}${PARTRPOOL}"
+	init_system_partitions "${TARGET}" "${DISK}${PARTBASE}1" "${DISK}${PARTBASE}${PARTESP}"
+~~~
+
+Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.
+
+
+source : [Linsomniac's Articles - Encrypting ZFS on Ubuntu 20.04](https://linsomniac.gitlab.io/post/2020-04-09-ubuntu-2004-encrypted-zfs/)
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-Bienvenue sur le Wiki.
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