I once changed the block factor of a enterprise NOVELL Server Hard Disk from 4 K to 8 K.
Side effect all data was lost.
Tape backups are your friends :)
>I once accidentally deleted a SQL Server database on a production server. Not good.
>
>>Back in the '80s, I inadvertently did that once...to someone else's PC.
>>Not a good feeling... :-(
>>
>>-m.