I can confirm this on 13.04.
Booting an ASUS P8H77-M PRO completely broke a 1TB ONDEMAND-RAID1 array of two disks!
Even worse, the SATA was actually in AHCI mode on purpose in the BIOS! Nevertheless it activated the raid, even worse, started a sync without asking!
I could barely get back the partitions with partition recovery. I had extremely hard time to recover my TrueCrypt encrypted volume! (Thanks, EASEUS!)
This is severe! You can loose all your data!
I can confirm this on 13.04.
Booting an ASUS P8H77-M PRO completely broke a 1TB ONDEMAND-RAID1 array of two disks!
Even worse, the SATA was actually in AHCI mode on purpose in the BIOS!
Nevertheless it activated the raid, even worse, started a sync without asking!
I could barely get back the partitions with partition recovery. I had extremely hard time to recover my TrueCrypt encrypted volume! (Thanks, EASEUS!)
This is severe! You can loose all your data!