Post by Carsten Grzemba
Is there a way to migrate a sliced (mirrored) rpool on disks with msdos partition table to gpt partioned disks (EFI lable)
Yes, you fully reformat one drive and do fresh install on it, then vtoc
+ zpool attach other drives to it.
(Or with newest Openindiana hipster snapshot media, installer can take
multiple devices and install on them during install.)
GPT and MBR disk partition types are mutually exclusive.
Maybe one can also first full-format whole disk as GPT, partition it AND
then make a Solaris Slice on it and install on Slice (and zfs
send/receive existing installation), but it is more advisable to give
unpartitioned space to the installer to make partitions and slices.
(and you can also zfs send/ zfs receive previous instalaltion on new BE
dataset later to migrate if you want).
Whatever one does, make sure to have system and data Backups, offline
(even if using zfs send/receive to backup).