Could be a problem with the USB port on the CentOS computer, or if you
are using a cable on with that computer, the cable.
Craig
On Tue, 2009-04-28 at 15:11 -0700, Bart Schaefer wrote:
> I just tried this with CentOS 5.3 as well, and got exactly the same
> symptoms and dmesg output. (As a point of comparison, Ubunu 8.04 on
> my work laptop is able to access the drive.)
>
> Obviously "not detected" is a misapprehension, though I'm puzzled why
> "lsusb" doesn't show it. The device is there even though the
> partition table can't be read.
>
> ---------- Forwarded message ----------
> From: Bart Schaefer <barton.schaefer@xxxxxxxxx>
> Date: Tue, Apr 28, 2009 at 10:58 AM
> Subject: Re: USB device not detected (CentOS 4.7)
> To: CentOS mailing list <centos@xxxxxxxxxx>
>
>
> On Tue, Apr 28, 2009 at 10:01 AM, Craig White <craigwhite@xxxxxxxxxxx> wrote:
> > On Tue, 2009-04-28 at 09:48 -0700, Bart Schaefer wrote:
> >> I recently purchased an I/O Magic USB enclosure for 3.5" IDE
> > ----
> > check what it says about the drive in dmesg after you plugged it in.
>
> Hmm.
>
> usb 1-6: new high speed USB device using address 4
> scsi7 : SCSI emulation for USB Mass Storage devices
> Vendor: HDS72251 Model: 6VLAT80 Rev: 0 0
> Type: Direct-Access ANSI SCSI revision: 02
> SCSI device sdd: 321672960 512-byte hdwr sectors (164697 MB)
> sdd: assuming drive cache: write through
> SCSI device sdd: 321672960 512-byte hdwr sectors (164697 MB)
> sdd: assuming drive cache: write through
>
> (so far this is correct, it's a 160GB drive in the enclosure)
> (the leading space on the next line is literally there in dmesg)
>
> sdd:SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> ldm_validate_partition_table(): Disk read failed.
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> unable to read partition table
> Attached scsi disk sdd at scsi7, channel 0, id 0, lun 0
> USB Mass Storage device found at 4
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 0
> Buffer I/O error on device sdd, logical block 0
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 8
> Buffer I/O error on device sdd, logical block 1
>
> (the last three lines then repeat for each of sectors 16-568, logical
> blocks 2-71)
>
> SCSI error : <7 0 0 0> return code = 0x10070000
> end_request: I/O error, dev sdd, sector 512
> Buffer I/O error on device sdd, logical block 64
> usb 1-6: USB disconnect, address 4
>
> (that's where I unplugged)
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>
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