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--- zfs [2019/11/05 23:16] – francesco
+++ zfs [2022/10/26 15:02] (current) – francesco
@@ Line 111: / Line 111: @@
 root@FreeBSD:~ # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada2
 bootcode written to ada2
+</code>
+**ATTENZIONE!**
+come spiegato in questo blog:
+https://solence.de/2019/05/01/update-uefi-boot-code-after-zfs-upgrade-on-freebsd/
+The suggested command to update the boot code [quello sopra], however, only applies to systems still booting with the old BIOS. If you use it on a system booting with UEFI, the UEFI partition will be overwritten and is not recognized as bootable anymore.
+The proper command to use on an UEFI system is the following:
+<code>
+gpart bootcode -p /boot/boot1.efifat -i 1 ada0
+</code>
+e in ogni caso, per vedere se è necessario fare un upgrade del pool ZFS, vale sempre la pena lanciare prima il comando:
+<code>
+zpool status zroot
 </code>
 ----
@@ Line 119: / Line 139: @@
 https://www.freebsd.org/cgi/man.cgi?zfs%288%29
+e soprattutto, visto che la situazione da FreeBSD 13.0 si è fatta più complicata:
+https://forums.freebsd.org/threads/update-of-the-bootcodes-for-a-gpt-scheme.80163/