540 USB Port

TimH
TimH Posts: 12
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When I connect a large (GPT) disk to the USB port the File Browser fails to recognize any data.  Am I missing something?

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  • TimH
    TimH Posts: 12
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    Answer ✓
    Final word: Repartitioned the Seagate to a single exFAT and all is good.
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  • okimarukas
    okimarukas Posts: 86
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    How large is your disk size? If it is large, it require a external power supply, I do not think the NAS could offer enough power to the disk. 
  • TimH
    TimH Posts: 12
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    I've had trouble with several 2-3 TB 3.5" SATA drives with 12V external power provided to the USB adapter.  A USB-powered 5TB 2.5" portable drive is again recognized, but not read.
  • Mijzelf
    Mijzelf Posts: 2,468
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    When you feel comfortable on the command line you can login over ssh, and run 'dmesg' to see if the kernel has any useful information about that disk.
  • TimH
    TimH Posts: 12
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    Hmmm.  Running "ssh admin@(ipaddress)" from the Win terminal I get "connection refused" rather than a PW request.  Probably need to know the proper syntax?  Not exactly a sophisticate here.
  • okimarukas
    okimarukas Posts: 86
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    To use SSH , you need to enable it on the NAS
  • TimH
    TimH Posts: 12
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    I think this is the relevant part of what I get from dmesg:

    [  742.826812] usb 2-1.3: New USB device found, idVendor=0bc2, idProduct=ab9a
    [  742.833708] usb 2-1.3: New USB device strings: Mfr=2, Product=3, SerialNumber=1
    [  742.841060] usb 2-1.3: Product: One Touch HDD
    [  742.845429] usb 2-1.3: Manufacturer: Seagate
    [  742.849718] usb 2-1.3: SerialNumber: 00000000NABNFCT4
    [  742.855319] usb 2-1.3: usb_probe_device
    [  742.855334] usb 2-1.3: configuration #1 chosen from 1 choice
    [  742.855495] usb 2-1.3: Successful Endpoint Configure command
    [  742.855607] usb 2-1.3: adding 2-1.3:1.0 (config #1, interface 0)
    [  742.856184] usb-storage 2-1.3:1.0: usb_probe_interface
    [  742.856204] usb-storage 2-1.3:1.0: usb_probe_interface - got id
    [  742.860959] scsi4 : usb-storage 2-1.3:1.0
    [  742.872376] drivers/usb/core/inode.c: creating file '003'
    [  742.872488] hub 2-1:1.0: state 7 ports 4 chg 0000 evt 0008
    [  743.866451] scsi 4:0:0:0: Direct-Access     Seagate  One Touch HDD    0002 PQ: 0 ANSI: 6
    [  743.882664] sd 4:0:0:0: [sde] Spinning up disk...
    [  743.887306] sd 4:0:0:0: Attached scsi generic sg4 type 0
    [  744.895944] .......ready

    Again, the disk is recognized by the Storage Manager and File Browser but appears to be empty, which it is not.


  • TimH
    TimH Posts: 12
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    Oh, and there's this after the "ready":

    [  750.956997] sd 4:0:0:0: [sde] Very big device. Trying to use READ CAPACITY(16).
    [  750.964677] sd 4:0:0:0: [sde] 9767541167 512-byte logical blocks: (5.00 TB/4.54 TiB)
    [  750.988982] sd 4:0:0:0: [sde] Write Protect is off
    [  750.993800] sd 4:0:0:0: [sde] Mode Sense: 4f 00 00 00
    [  750.994145] sd 4:0:0:0: [sde] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    [  751.004565] sd 4:0:0:0: [sde] Very big device. Trying to use READ CAPACITY(16).
    [  751.093380]  sde: sde1 sde2
    [  751.104047] sd 4:0:0:0: [sde] Very big device. Trying to use READ CAPACITY(16).
    [  751.112262] sd 4:0:0:0: [sde] Attached SCSI disk
    [  753.000091] FAT-fs (sde1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!

  • TimH
    TimH Posts: 12
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  • Mijzelf
    Mijzelf Posts: 2,468
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    That dmesg output looks healthy to me. It recognizes the partition table, and finds 2 partitions. The first one is mounted, and yields a warning about utf8 filenames. Can't say if the second is mounted. According to your screenshot it knows the filesystem (exfat), but it doesn't know the size, which suggests that it's not mounted.
    I remember that long ago there was a limit on NTFS filesystem size on a ZyXEL NAS, but I can't remember what caused it.
    Are all partitions of a multi partition smaller disk mounted?
  • TimH
    TimH Posts: 12
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    I've been able to see files on single-partition disks smaller than 1TB.  Just now was able to read and write to a 2TB single NTFS partition using my new SATA to USB connector.  Don't have a 3TB to test at the moment.  Hmm.  Maybe the old connector was part of the problem.  Seagate shipped the 5TB portable disk with a 200MB System portion I've never tried to read and a second exFAT partition that Windows loads easily.  Is exFAT the problem?

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