https://bugzilla.kernel.org/show_bug.cgi?id=118401 --- Comment #13 from Navin <navinp1912@xxxxxxxxx> --- Your block devices are not being detected due to some problem. Maybe the driver for it is not getting loaded. Can you post the complete dmesg from 4.2 working ? In the initramfs pre mount scripts Instead of dmesg | grep -i blocks you can add dmesg | grep -i achi dmesg | grep -i scsi dmesg | grep -i sata dmesg | grep -i ata[0-4] cat /proc/scsi/scsi The below device is missing in your 4.6 . Below is your 4.2 [7.6.] SCSI information (from /proc/scsi/scsi) (from running 4.2) Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST1000LM014-1EJ1 Rev: LIV6 Type: Direct-Access ANSI SCSI revision: 05 -- You are receiving this mail because: You are watching the assignee of the bug. -- 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