Ok, here is getting really weird, take a look at this.. With only 1 array, same as before, with 2 arrays, this happens. aniel@Lizzie:~$ sudo dmraid -ay [sudo] password for daniel: RAID set "isw_bhhagfbig_Volume0" already active RAID set "isw_bhhagfbig_Volume1" was not activated the detailed report says this: daniel@Lizzie:~$ sudo dmraid -ay -ddd -vvv WARN: locking /var/lock/dmraid/.lock NOTICE: /dev/sdc: asr discovering NOTICE: /dev/sdc: ddf1 discovering NOTICE: /dev/sdc: hpt37x discovering NOTICE: /dev/sdc: hpt45x discovering NOTICE: /dev/sdc: isw discovering DEBUG: isw metadata found at 150039944192 from probe at 150039944192 NOTICE: /dev/sdc: isw metadata discovered NOTICE: /dev/sdc: jmicron discovering NOTICE: /dev/sdc: lsi discovering NOTICE: /dev/sdc: nvidia discovering NOTICE: /dev/sdc: pdc discovering NOTICE: /dev/sdc: sil discovering NOTICE: /dev/sdc: via discovering NOTICE: /dev/sdb: asr discovering NOTICE: /dev/sdb: ddf1 discovering NOTICE: /dev/sdb: hpt37x discovering NOTICE: /dev/sdb: hpt45x discovering NOTICE: /dev/sdb: isw discovering DEBUG: isw metadata found at 150039944192 from probe at 150039944192 NOTICE: /dev/sdb: isw metadata discovered NOTICE: /dev/sdb: jmicron discovering NOTICE: /dev/sdb: lsi discovering NOTICE: /dev/sdb: nvidia discovering NOTICE: /dev/sdb: pdc discovering NOTICE: /dev/sdb: sil discovering NOTICE: /dev/sdb: via discovering NOTICE: /dev/sda: asr discovering NOTICE: /dev/sda: ddf1 discovering NOTICE: /dev/sda: hpt37x discovering NOTICE: /dev/sda: hpt45x discovering NOTICE: /dev/sda: isw discovering DEBUG: not isw at 64105741312 DEBUG: isw trying hard coded -2115 offset. DEBUG: not isw at 64104659456 NOTICE: /dev/sda: jmicron discovering NOTICE: /dev/sda: lsi discovering NOTICE: /dev/sda: nvidia discovering NOTICE: /dev/sda: pdc discovering NOTICE: /dev/sda: sil discovering NOTICE: /dev/sda: via discovering DEBUG: _find_set: searching isw_bhhagfbig DEBUG: _find_set: not found isw_bhhagfbig DEBUG: _find_set: searching isw_bhhagfbig_Volume0 DEBUG: _find_set: searching isw_bhhagfbig_Volume0 DEBUG: _find_set: not found isw_bhhagfbig_Volume0 DEBUG: _find_set: not found isw_bhhagfbig_Volume0 DEBUG: _find_set: searching isw_bhhagfbig_Volume1 DEBUG: _find_set: searching isw_bhhagfbig_Volume1 DEBUG: _find_set: searching isw_bhhagfbig_Volume1 DEBUG: _find_set: not found isw_bhhagfbig_Volume1 DEBUG: _find_set: not found isw_bhhagfbig_Volume1 DEBUG: _find_set: not found isw_bhhagfbig_Volume1 NOTICE: added /dev/sdc to RAID set "isw_bhhagfbig" DEBUG: _find_set: searching isw_bhhagfbig DEBUG: _find_set: found isw_bhhagfbig DEBUG: _find_set: searching isw_bhhagfbig_Volume0 DEBUG: _find_set: searching isw_bhhagfbig_Volume0 DEBUG: _find_set: found isw_bhhagfbig_Volume0 DEBUG: _find_set: found isw_bhhagfbig_Volume0 DEBUG: _find_set: searching isw_bhhagfbig_Volume1 DEBUG: _find_set: searching isw_bhhagfbig_Volume1 DEBUG: _find_set: found isw_bhhagfbig_Volume1 DEBUG: _find_set: found isw_bhhagfbig_Volume1 NOTICE: added /dev/sdb to RAID set "isw_bhhagfbig" DEBUG: checking isw device "/dev/sdb" DEBUG: checking isw device "/dev/sdc" DEBUG: set status of set "isw_bhhagfbig_Volume0" to 16 DEBUG: checking isw device "/dev/sdb" DEBUG: checking isw device "/dev/sdc" DEBUG: set status of set "isw_bhhagfbig_Volume1" to 16 RAID set "isw_bhhagfbig_Volume0" already active RAID set "isw_bhhagfbig_Volume1" was not activated INFO: Activating GROUP raid set "isw_bhhagfbig" NOTICE: discovering partitions on "isw_bhhagfbig_Volume0" NOTICE: /dev/mapper/isw_bhhagfbig_Volume0: dos discovering WARN: unlocking /var/lock/dmraid/.lock DEBUG: freeing devices of RAID set "isw_bhhagfbig_Volume0" DEBUG: freeing device "isw_bhhagfbig_Volume0", path "/dev/sdb" DEBUG: freeing device "isw_bhhagfbig_Volume0", path "/dev/sdc" DEBUG: freeing devices of RAID set "isw_bhhagfbig_Volume1" DEBUG: freeing device "isw_bhhagfbig_Volume1", path "/dev/sdb" DEBUG: freeing device "isw_bhhagfbig_Volume1", path "/dev/sdc" DEBUG: freeing devices of RAID set "isw_bhhagfbig" DEBUG: freeing device "isw_bhhagfbig", path "/dev/sdb" DEBUG: freeing device "isw_bhhagfbig", path "/dev/sdc" Something is very wrong here and I think it has to do with something else, also, after executing dmraid, I can no longer boot (this bug is what happens to me after the first boot: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/398059) Hope this helps