Zapis na USB flashku - zasek OS

[Kaminar]

Zdravim,

zapisoval jsem na flashku Corsair Flash 1G nekolik souboru
o velikosti v prumeru 150KiB. Po nejake dobe kopirovani se
ovsem zapis zasekl a cely system se zacal hroutit az po pokusu
odmontovat flash disk se zcela zasekl. Pokus jsem opakoval
dvakrat a v obou pripadech doslo ke stejnemu problemu s tim,
ze pokazde v trochu jinem okamziku kopirovani. Flasku jsem
vyzkousel na Windowsech a bez problemu fungovala.

Rad bych se tedy zeptal, co se to stalo a kde by mohl byt problem
a jestli je to problem OS nebo flasky.

Dik
Karel


Mam FreeBSD R6.0.
Disk byl namontovany jako:
mount -t msdos /dev/da0s1 /mnt

V logu byly tyto zapisy, ktere vznikly pri zapisu:

Sep  6 14:05:58 k307 kernel: uhub4: Prolific Technology Inc. USB Embedded Hub, class 9/0, rev 2.00/1.00, addr 2
Sep  6 14:05:58 k307 kernel: uhub4: single transaction translator
Sep  6 14:05:58 k307 kernel: uhub4: 1 port with 0 removable, self powered
Sep  6 14:05:59 k307 kernel: umass0: Prolific Technology Inc. USB Mass Storage Device, rev 2.00/1.00, addr 3
Sep  6 14:05:59 k307 kernel: da0 at umass-sim0 bus 0 target 0 lun 0
Sep  6 14:05:59 k307 kernel: da0: <Corsair Flash Voyager 1.00> Removable Direct Access SCSI-0 device
Sep  6 14:05:59 k307 kernel: da0: 40.000MB/s transfers
Sep  6 14:05:59 k307 kernel: da0: 992MB (2031616 512 byte sectors: 64H 32S/T 992C)
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 0 0 1e 90 20 0 0 20 0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): SCSI Status: Check Condition
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): DATA PROTECT asc:27,0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): Write protected
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): Unretryable error
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1025523712, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1025540096, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1025556480, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1025572864, length=16384)]error = 5

.......... zkraceno (opakovani jen s jinymi hodnotami)

Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1025507328, length=16384)]error = 13
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 0 0 1e 95 c0 0 0 20 0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): SCSI Status: Check Condition
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): DATA PROTECT asc:27,0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): Write protected
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): Unretryable error
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026260992, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026277376, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026244608, length=16384)]error = 13
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 0 0 1e 96 20 0 0 20 0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): SCSI Status: Check Condition
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): DATA PROTECT asc:27,0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): Write protected
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): Unretryable error
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026310144, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026326528, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026342912, length=16384)]error = 5
Sep  6 14:07:52 k307 kernel: g_vfs_done():da0s1[WRITE(offset=1026293760, length=16384)]error = 13
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): WRITE(10). CDB: 2a 0 0 1e 96 a0 0 0 20 0
Sep  6 14:07:52 k307 kernel: (da0:umass-sim0:0:0:0): CAM Status: SCSI Status Error

..... a takto se to podobne opakovalo dale.