I'm not entirely sure this is the right list for this question, but it IS ext4 'involved'. So ... I create a GPT Bios Boot Partition on a clean disk sgdisk -z /dev/sdc sgdisk -o /dev/sdc sgdisk -n 1:2048:+1M -t 1:ef02 -c 1:"BIOS Boot" /dev/sdc IIUC, at this point, the partition should exist with NO filesystem. But, if I check with blkid blkid /dev/sdc1 /dev/sdc1: LABEL="RAID_BOOT" UUID="8a828baa-f315-4456-88d2-ff14849eb705" TYPE="ext4" PARTLABEL="BIOS Boot" PARTUUID="2b3b10b1-a458-481e-872c-bada7d244b13" Note that it IDs the filesystem type as TYPE="ext4" Why? Bios Boot Partition should have NO filesystem. Is blkid correct? Is there, or isn't there a fs on that partition? if there isn't, what's causint the 'false' report? If there IS, how do I make sure there isn't? grant -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html