Rebuilding a Raid 1

Ian Stakenvicius, Aerobiology Research ian at
Sat May 18 13:04:05 UTC 2013

A small bit of terminology difference is being used, I think.  Traditionally:

hardware raid:  raid cards that handle all HDD io independently.

Bios raid / fake raid:  what dmraid is meant for (or mdraid, for isw)

software raid: pure software/kernel solution; using mdraid.

now, as for booting -- as far as I know the only way to boot a full raid0 system is to use biosraid, since the bios cannot assemble the striped drives of a mdraid-0 in order to load the bootloader or kernel.  yes this is probably a rare config (i would never run it) but if someone so chose, dmraid would be the tool for this job.

On 2013-05-18, at 6:00 AM, Danny <danwood76 at> wrote:

> You can boot from mdadm fake RAID and it is far superior in terms of features and support/maintenence and the performance is the same. So anyone with a pure linux install would be better off in mdadm.
> On Fri, May 17, 2013 at 8:54 PM, Kristian Rasmussen <kristian.rasmussen at> wrote:
>> On 17.05.2013 20:10, Danny wrote:
>> > The problem with dmraid is that the only people who use it are dual booting
>> > windows,
>> Or anybody who wants to boot from fakeRAID.
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