Hi, Juan Thank you for your comments. I can boot domU with the following modprobe.conf. > alias scsi_hostadapter xenblk But I have some ide errors. After I add extra = 'ide0=noprobe ide1=noprobe ide2=noprobe ide3=noprobe ide4=noprobe' into domU's config, ide errors are not occurred. (Thanks Kouya) Best Regards, Akio Takebe