Boot Error

[    7.934290] ata1.00: failed command: READ FPDMA QUEUED
[    7.934403] ata1.00: cmd 60/00:00:88:10:05/01:00:09:00:00/40 tag 0 ncq 131072 in
[    7.934406]          res 51/40:00:88:10:05/00:01:09:00:00/40 Emask 0x409 (media error) <F>
[    7.934707] ata1.00: status: { DRDY ERR }
[    7.934789] ata1.00: error: { UNC }
[    7.937987] ata1.00: configured for UDMA/133
[    7.938001] ata1: EH complete
[   11.889712] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
[   11.889846] ata1.00: irq_stat 0x40000008
[   11.889930] ata1.00: failed command: READ FPDMA QUEUED
[   11.890042] ata1.00: cmd 60/00:00:88:10:05/01:00:09:00:00/40 tag 0 ncq 131072 in
[   11.890046]          res 51/40:00:88:10:05/00:01:09:00:00/40 Emask 0x409 (media error) <F>
[   11.890346] ata1.00: status: { DRDY ERR }
[   11.890428] ata1.00: error: { UNC }
[   11.893660] ata1.00: configured for UDMA/133
[   11.893674] ata1: EH complete
[   15.867540] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
[   15.867674] ata1.00: irq_stat 0x40000008
[   15.867758] ata1.00: failed command: READ FPDMA QUEUED
[   15.867870] ata1.00: cmd 60/00:00:88:10:05/01:00:09:00:00/40 tag 0 ncq 131072 in
[   15.867873]          res 51/40:00:88:10:05/00:01:09:00:00/40 Emask 0x409 (media error) <F>
[   15.868195] ata1.00: status: { DRDY ERR }
[   15.868279] ata1.00: error: { UNC }
[   15.871514] ata1.00: configured for UDMA/133
[   15.871529] ata1: EH complete
[   19.845379] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
[   19.845510] ata1.00: irq_stat 0x40000008
[   19.845593] ata1.00: failed command: READ FPDMA QUEUED
[   19.845705] ata1.00: cmd 60/00:00:88:10:05/01:00:09:00:00/40 tag 0 ncq 131072 in
[   19.845708]          res 51/40:00:88:10:05/00:01:09:00:00/40 Emask 0x409 (media error) <F>
[   19.846008] ata1.00: status: { DRDY ERR }
[   19.846090] ata1.00: error: { UNC }
[   19.849311] ata1.00: configured for UDMA/133
[   19.849323] ata1: EH complete
[   23.812112] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
[   23.812243] ata1.00: irq_stat 0x40000008
[   23.812326] ata1.00: failed command: READ FPDMA QUEUED
[   23.812438] ata1.00: cmd 60/00:00:88:10:05/01:00:09:00:00/40 tag 0 ncq 131072 in
[   23.812441]          res 51/40:00:88:10:05/00:01:09:00:00/40 Emask 0x409 (media error) <F>
[   23.812741] ata1.00: status: { DRDY ERR }
[   23.812823] ata1.00: error: { UNC }
[   23.816060] ata1.00: configured for UDMA/133
[   23.816072] ata1: EH complete
[   27.801070] ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0
[   27.804160] ata1.00: irq_stat 0x40000008
[   27.807160] ata1.00: failed command: READ FPDMA QUEUED
[   27.810181] ata1.00: cmd 60/00:00:88:10:05/01:00:09:00:00/40 tag 0 ncq 131072 in
[   27.810184]          res 51/40:00:88:10:05/00:01:09:00:00/40 Emask 0x409 (media error) <F>
[   27.816352] ata1.00: status: { DRDY ERR }
[   27.819402] ata1.00: error: { UNC }
[   27.825534] ata1.00: configured for UDMA/133
[   27.825555] sd 0:0:0:0: [sda] Unhandled sense code
[   27.825560] sd 0:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[   27.825567] sd 0:0:0:0: [sda] Sense Key : Medium Error [current] [descriptor]
[   27.825576] Descriptor sense data with sense descriptors (in hex):
[   27.825581]         72 03 11 04 00 00 00 0c 00 0a 80 00 00 00 00 00
[   27.825601]         09 05 10 88
[   27.825609] sd 0:0:0:0: [sda] Add. Sense: Unrecovered read error - auto reallocate failed
[   27.825619] sd 0:0:0:0: [sda] CDB: Read(10): 28 00 09 05 10 88 00 01 00 00
[   27.825637] end_request: I/O error, dev sda, sector 151326856
[   27.828706] JBD: Failed to read block at offset 8465
[   27.828731] ata1: EH complete
[   27.831834] JBD: recovery failed
[   27.831839] EXT4-fs (sda1): error loading journal
[   30.016914] ISO 9660 Extensions: Microsoft Joliet Level 3
[   30.044787] ISO 9660 Extensions: RRIP_1991A
[   30.083297] aufs: module is from the staging directory, the quality is unknown, you have been warned.
[   30.095494] aufs 2-standalone.tree-32-20100125
[   30.130738] loop: module loaded