How to mirror the FreeBSD OS on two disks

Wojciech Puchar wojtek at
Thu Jul 12 19:57:01 UTC 2012

>> no it doesn't
> You appear to be agreeing with me, but saying that your method does not 
> produce that problem.

sorry - possibly i missed something.

>> both method results in system bootable from both drives and proper 
>> disklabels.
> Yes, these are the same methods that can be used with MBR partitions. The 
> second works with GPT partitioning also.
true. first doesn't. for now i use only second method in spite of not 
using GPT. being able to de-mirror selectively a partition or not mirror 
some partitions at all is quite a big adventage.

definitely not possible with "hardware" RAID.

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