How likely is the following error (which happens periodically) to be on the M. 2 SATA device and how likely is it to be on the motherboard? If it's on the SATA device I can replace that, if it's the motherboard I just need to put up with periodic hangs and keep good backups (a new motherboard costs more than the value of the laptop). [315041.837612] ata1.00: status: { DRDY } [315041.837613] ata1.00: failed command: WRITE FPDMA QUEUED [315041.837616] ata1.00: cmd 61/20:48:28:1e:3e/00:00:00:00:00/40 tag 9 ncq dma 16384 out res 40/00:01:00:00:00/00:00:00:00:00/e0 Emask 0x4 (timeout) [315041.837617] ata1.00: status: { DRDY } [315041.837618] ata1.00: failed command: READ FPDMA QUEUED [315041.837621] ata1.00: cmd 60/08:50:e0:26:84/00:00:00:00:00/40 tag 10 ncq dma 4096 in res 40/00:01:00:00:00/00:00:00:00:00/e0 Emask 0x4 (timeout) [315041.837622] ata1.00: status: { DRDY } [315041.837625] ata1: hard resetting link [315042.151781] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300) [315042.163368] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded [315042.163370] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out [315042.163372] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out [315042.183332] ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded [315042.183334] ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out [315042.183336] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out [315042.193332] ata1.00: configured for UDMA/133 [315042.193789] sd 0:0:0:0: [sda] tag#10 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [315042.193791] sd 0:0:0:0: [sda] tag#10 Sense Key : Illegal Request [current] [315042.193793] sd 0:0:0:0: [sda] tag#10 Add. Sense: Unaligned write command [315042.193795] sd 0:0:0:0: [sda] tag#10 CDB: Read(10) 28 00 00 84 26 e0 00 00 08 00 [315042.193797] print_req_error: I/O error, dev sda, sector 8660704 [315042.193810] ata1: EH complete I'm getting the errors on a wide selection of somewhat random sectors (that are all divisible by 8). Dec 14 17:40:09 liv kernel: [297451.401459] print_req_error: I/O error, dev sdb, sector 2073200 Dec 14 17:40:29 liv kernel: [297471.674024] print_req_error: I/O error, dev sdb, sector 2931718768 Dec 14 17:40:29 liv kernel: [297471.674295] print_req_error: I/O error, dev sdb, sector 1226653088 Dec 14 17:40:29 liv kernel: [297471.674315] print_req_error: I/O error, dev sdb, sector 4156298656 Dec 14 22:33:20 liv kernel: [315042.193797] print_req_error: I/O error, dev sda, sector 8660704 Dec 11 17:42:23 liv kernel: [182970.726875] print_req_error: I/O error, dev sda, sector 42147264 Nov 30 22:43:31 liv kernel: [399074.746393] print_req_error: I/O error, dev sda, sector 231758600 Nov 26 00:55:16 liv kernel: [212647.753370] print_req_error: I/O error, dev sda, sector 23865952 Nov 26 00:55:16 liv kernel: [212647.753420] print_req_error: I/O error, dev sda, sector 23870056 Nov 26 00:55:16 liv kernel: [212647.753444] print_req_error: I/O error, dev sda, sector 5989744 Nov 26 00:55:16 liv kernel: [212647.753463] print_req_error: I/O error, dev sda, sector 6127336 Nov 26 00:55:16 liv kernel: [212647.753481] print_req_error: I/O error, dev sda, sector 8780056 Nov 26 00:55:16 liv kernel: [212647.753499] print_req_error: I/O error, dev sda, sector 9435856 Nov 26 00:55:16 liv kernel: [212647.753526] print_req_error: I/O error, dev sda, sector 9622096 Nov 26 00:55:16 liv kernel: [212647.753533] print_req_error: I/O error, dev sda, sector 9697912 Nov 26 00:55:16 liv kernel: [212647.753543] print_req_error: I/O error, dev sda, sector 9874752 Nov 26 00:55:16 liv kernel: [212647.753551] print_req_error: I/O error, dev sda, sector 9897224 Nov 27 01:35:55 liv kernel: [240255.929450] print_req_error: 22 callbacks suppressed Nov 27 01:35:55 liv kernel: [240255.929453] print_req_error: I/O error, dev sda, sector 43704312 Nov 27 01:35:55 liv kernel: [240255.929524] print_req_error: I/O error, dev sda, sector 43704432 Nov 27 01:35:55 liv kernel: [240255.929557] print_req_error: I/O error, dev sda, sector 3902144 Nov 27 01:35:55 liv kernel: [240255.929589] print_req_error: I/O error, dev sda, sector 26654472 Nov 27 01:35:55 liv kernel: [240255.929615] print_req_error: I/O error, dev sda, sector 35040632 Nov 27 01:35:55 liv kernel: [240255.929642] print_req_error: I/O error, dev sda, sector 38449048 Nov 27 01:35:55 liv kernel: [240255.929667] print_req_error: I/O error, dev sda, sector 44228320 Nov 27 01:35:55 liv kernel: [240255.929700] print_req_error: I/O error, dev sda, sector 43699720 Nov 27 01:35:55 liv kernel: [240255.929745] print_req_error: I/O error, dev sda, sector 43701688 Nov 27 01:35:55 liv kernel: [240255.929772] print_req_error: I/O error, dev sda, sector 43809896 Nov 28 14:37:09 liv kernel: [277047.828152] print_req_error: 20 callbacks suppressed Nov 28 14:37:09 liv kernel: [277047.828152] print_req_error: I/O error, dev sda, sector 55522392 -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/