Freebsd server wont boot

[rpadilla]

Hi,

Im technically new to freebsd/linux , our Sys admin just left and no one here to check the problem. After a power failure our server just hangs up in boot.

here is the last part of error

GEOM_MIRROR: Device gm0 created (id=42865....)
GEOM_MIRROR: Device gm0: provider ad4 detected
GEOM_MIRROR: Device gm0: provider ad6 detected
GEOM_MIRROR: Device gm0: provider mirror/gm0 launched.
GEOM_MIRROR: Device gm0: rebuilding provider ad4
ad6: FAILURE - READ_DMA status=51<READY, DSC,ERROR> errror=40<UNCORRECTABLE> LBA=41081416
GEOM_MIRROR: Request failed (error=5). ad6[READ(offset=21034...., length=131...)]

I just retype all that on the last part of the boot message.

I tried reading about GEOM_MIRROR and i found out that we had a two hard disk and probably 1 of them is having some problem. Is their anyway i can just remove the 1 hard disk and make it boot again.

Thanks