I'm also curious about this issue :-) Not sure if you tried kfod that is normally used with disk discovery problems.I'd say that kfod will perform the same discovery as asm instance in startup using asm_diskstring. Can you try this: kfod asm_diskstring='/your_disk_string/*' disks=all Luis Marques On Thu, Jan 3, 2013 at 8:57 AM, Fergal Taheny <ftaheny@xxxxxxxxx> wrote: > /dev/oradsk/ASMDA1 -- Cumprimentos, Luís Marques -- //www.freelists.org/webpage/oracle-l