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 at gmail.com> > Date: Tue, Apr 28, 2009 at 10:58 AM > Subject: Re: [CentOS] USB device not detected (CentOS 4.7) > To: CentOS mailing list <centos at centos.org> > > > On Tue, Apr 28, 2009 at 10:01 AM, Craig White <craigwhite at azapple.com> 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) > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.