When i powerdown my computer i obtain these messages : sd 1:0:1:0: freeze sd 1:0:1:0: [sdc] Synchronizing SCSI cache ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:20/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete sd 1:0:1:0: [sdc] 16514064 512-byte hardware sectors (8455 MB) sd 1:0:1:0: [sdc] Write Protect is off sd 1:0:1:0: [sdc] Mode Sense: 00 3a 00 00 sd 1:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:1:0: [sdc] 16514064 512-byte hardware sectors (8455 MB) sd 1:0:1:0: [sdc] Write Protect is off sd 1:0:1:0: [sdc] Mode Sense: 00 3a 00 00 sd 1:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete sd 1:0:1:0: [sdc] 16514064 512-byte hardware sectors (8455 MB) sd 1:0:1:0: [sdc] Write Protect is off sd 1:0:1:0: [sdc] Mode Sense: 00 3a 00 00 sd 1:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:1:0: [sdc] 16514064 512-byte hardware sectors (8455 MB) sd 1:0:1:0: [sdc] Write Protect is off sd 1:0:1:0: [sdc] Mode Sense: 00 3a 00 00 sd 1:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete ata2.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 ata2.01: cmd e7/00:00:00:00:00/00:00:00:00:00/b0 tag 0 cdb 0x1e data 0 res 51/04:00:00:00:00/00:00:00:00:00/b0 Emask 0x1 (device error) ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.00: configured for UDMA/33 ata2.01: ata_hpa_resize 1: hpa sectors (0) is smaller than sectors (16514064) ata2.01: configured for UDMA/33 ata2: EH complete sd 1:0:1:0: [sdc] 16514064 512-byte hardware sectors (8455 MB) sd 1:0:1:0: [sdc] Write Protect is off sd 1:0:1:0: [sdc] Mode Sense: 00 3a 00 00 sd 1:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:1:0: [sdc] 16514064 512-byte hardware sectors (8455 MB) sd 1:0:1:0: [sdc] Write Protect is off sd 1:0:1:0: [sdc] Mode Sense: 00 3a 00 00 sd 1:0:1:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 1:0:1:0: [sdc] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE,SUGGEST_OK sd 1:0:1:0: [sdc] Sense Key : Aborted Command [current] [descriptor] sd 1:0:1:0: [sdc] Add. Sense: No additional sense information What's the problem ? Thanks Eric