Hello all,
A few days ago a Western Digital hard disk of mine, which is attached via USB, stopped working. It turned out to be a power issue, and therefore it seems that my data is still there, but while trying another USB bay I found a strange issue. The product is WDBAAU0010HBX while the disk is a WD10EADS.
This is what is reported when the disk is attached to another external bay:
and as GEOM reports the partition table was not readable and the disk was not mountable. After having fixed the power issue with the original bay, this is what happens using the WD bay:
(the fact that in the former case the disk is reported as /dev/da1 is because the external peripheral was a two disk bay, while the original one was a single bay).
So as of this writing the disk is working again, but I'm curious to understand this strange behavior, that I think is not strictly related to FreeBSD. Sounds to me like the hardware controller is faking the partition table or similar.
A few days ago a Western Digital hard disk of mine, which is attached via USB, stopped working. It turned out to be a power issue, and therefore it seems that my data is still there, but while trying another USB bay I found a strange issue. The product is WDBAAU0010HBX while the disk is a WD10EADS.
This is what is reported when the disk is attached to another external bay:
Code:
da1 at umass-sim1 bus 1 scbus5 target 0 lun 0
da1: <WDC WD10 EADS-11M2B2 > Fixed Direct Access SCSI-2 device
da1: 40.000MB/s transfers
da1: 953869MB (244190646 4096 byte sectors: 255H 63S/T 15200C)
GEOM_PART: integrity check failed (da1, MBR)
and as GEOM reports the partition table was not readable and the disk was not mountable. After having fixed the power issue with the original bay, this is what happens using the WD bay:
Code:
da0 at umass-sim0 bus 0 scbus4 target 0 lun 0
da0: <WD Ext HDD 1021 2002> Fixed Direct Access SCSI-4 device
da0: 40.000MB/s transfers
da0: 953867MB (1953519616 512 byte sectors: 255H 63S/T 121600C)
(the fact that in the former case the disk is reported as /dev/da1 is because the external peripheral was a two disk bay, while the original one was a single bay).
So as of this writing the disk is working again, but I'm curious to understand this strange behavior, that I think is not strictly related to FreeBSD. Sounds to me like the hardware controller is faking the partition table or similar.