-RVP PS. Try seeing if a `dd' with `oflag=direct' with a very large file (10GB) provokes an error.Hi RVP, many thanks for your findings. I am now backuping the SD contents, it seems that it can be read with no apparent problems. After that I will make the dd test directly to the SD and see what happens.Regards. Ramiro.
Oh, during the backup I see the following frequent messages in dmesg :-) [ 5799.922946] ASC/ASCQ: Incompatible Medium Installed [ 5806.622960] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 72 80 00 00 80 00 [ 5806.622960] SENSE KEY: Aborted Command [ 5806.622960] ASC/ASCQ: Incompatible Medium Installed [ 5813.332974] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 72 80 00 00 80 00 [ 5813.332974] SENSE KEY: Aborted Command [ 5813.332974] ASC/ASCQ: Incompatible Medium Installed [ 5813.332974] sd0d: error reading fsbn 15430272 of 15430272-15430399 (sd0 bn 15430272; cn 7534 tn 20 sn 0) [ 5820.032991] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 7a 80 00 00 60 00 [ 5820.032991] SENSE KEY: Aborted Command [ 5820.032991] ASC/ASCQ: Incompatible Medium Installed [ 5826.733005] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 7a 80 00 00 60 00 [ 5826.733005] SENSE KEY: Aborted Command [ 5826.733005] ASC/ASCQ: Incompatible Medium Installed [ 5833.433020] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 7a 80 00 00 60 00 [ 5833.433020] SENSE KEY: Aborted Command [ 5833.433020] ASC/ASCQ: Incompatible Medium Installed [ 5840.143035] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 7a 80 00 00 60 00 [ 5840.143035] SENSE KEY: Aborted Command [ 5840.143035] ASC/ASCQ: Incompatible Medium Installed [ 5846.843049] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 7a 80 00 00 60 00 [ 5846.843049] SENSE KEY: Aborted Command [ 5846.843049] ASC/ASCQ: Incompatible Medium Installed [ 5846.843049] sd0d: error reading fsbn 15432320 of 15432320-15432415 (sd0 bn 15432320; cn 7535 tn 20 sn 0) [ 5854.153066] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 72 80 00 00 80 00 [ 5854.153066] SENSE KEY: Aborted Command [ 5854.153066] ASC/ASCQ: Incompatible Medium Installed [ 5860.853081] sd0(umass0:0:0:0): Check Condition on CDB: 0x28 00 00 eb 72 80 00 00 80 00 [ 5860.853081] SENSE KEY: Aborted Command [ 5860.853081] ASC/ASCQ: Incompatible Medium Installed netbsd-x260$