New iMac doesn't see my USB storage drive without going thru a hub

Discussion in 'iMac' started by Crotonmark, Apr 22, 2019.

  1. Crotonmark macrumors regular

    Crotonmark

    Joined:
    Jul 22, 2011
    Location:
    Westchester County, NY
    #1
    Just powered up my new 2019 iMac. Moved all my information from my 2009 iMac via Migration assistant from a time machine backup. After all was moved over I plugged in my storage drive. the iMac doesn't see it. as a test I plugged the drive into my USB hub. It now sees the drive and mounts it

    Any ideas why it needs the hub?

    Im baffled


    Mark
     
  2. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #2
    Is your hub a "powered hub" (with its own power supply)?
    Is the USB drive 3.5" or 2.5" ?
    Is it a platter-based drive (not an SSD)?
    Does it have its own power supply ?

    When you plug in the drive WITHOUT the hub, if it's a platter-based HDD, do you hear the platters "spin up" inside?
     
  3. Crotonmark thread starter macrumors regular

    Crotonmark

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    Jul 22, 2011
    Location:
    Westchester County, NY
    #3
    ok
    It is a platter based HDD Seagate drive. It is powered and the front light is on without the Hub
    The hub is also powered
    On a 2009 iMac the external drive was seen and mounted on its own
     
  4. Lee_Bo macrumors regular

    Lee_Bo

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    Location:
    Greenville, SC
    #4
    Exactly what I was thinking. Does your storage drive also need power? If so that's probably why you see it via USB hub.
     
  5. Crotonmark thread starter macrumors regular

    Crotonmark

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    #5
    The storage drive needs power but it has a power supply. When it is out of the hub I can hear it power up
     
  6. Lee_Bo macrumors regular

    Lee_Bo

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    Mar 26, 2017
    Location:
    Greenville, SC
    #6
    I also have a couple of the Seagate external drives. Does it only have the USB 3.0 connector on it:
     
  7. Crotonmark thread starter macrumors regular

    Crotonmark

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    #7
    I was using it on a 2009 Mac so I was using the connector into a USB 2.0 port
     
  8. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #8
    Another thought:
    What FORMAT is the Seagate drive?
     
  9. Crotonmark thread starter macrumors regular

    Crotonmark

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    Westchester County, NY
    #9
    I am not at my Mac at the moment
    It was formatted using High Sierra - probably not the latest
    Is this the issue?
    Can this be solved?
    Is being plugged into a hub a problem?
     
  10. NoBoMac macrumors 68020

    Joined:
    Jul 1, 2014
    #10
    What else is plugged in to the USB ports? One of those things might be sucking up most of the power. Could see that on my previous Macbook where when plugged in to the monitor, I'd use a wired keyboard: that ate juice, the phone plugged into one the keyboard ports pulled power, making the other USB port on the computer pretty anemic. Some drives fired up, others not (disk spins, but not seen), and the second keyboard port was pretty useless.

    When at the computer, pull up the System Report from "About this Mac", go to the USB section and see what kind of power draw is going on and add it up. USB type A ports on a Mac will deliver 900-1100mA of total power.
     
  11. Crotonmark thread starter macrumors regular

    Crotonmark

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    Jul 22, 2011
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    #11
    I will check when I am at the iMac - thanks
    this is the draw
    1 - Hub - has a elgato video capture attached as well as a scanner
    2 - Time Machine external drive
    3 - Photo Printer

    Why would it be different on the 2019 iMac vs. 2009 iMac?
    Does it hurt anything to be in a Hub?
     
  12. NoBoMac, Apr 22, 2019
    Last edited: Apr 22, 2019

    NoBoMac macrumors 68020

    Joined:
    Jul 1, 2014
    #12
    In theory, should be no difference between 2009 and 2019 re: power on the ports. That said, and I can't do the technicals justice, power across the ports, from what I've read (and seen), can be a bit variable.

    In this case, for example purposes, maybe the 2009 was delivering a little more power across the ports (ie. out-of-spec) vs 2019. Or 2019 is a little under spec. And if the drive is pulling power a little more than spec, you have a conflict. Add in, it's basically first come, first served for power: everyone next in line gets a smaller slice, if any.

    Since the hub is powered, should not be an issue. Printer is powered as well, so, not an issue there.

    Might want to try different ports for the drive, see what happens. Or, unplug everything but the drive: if spins up, one of the other things is drawing a fair amount of power (strangely), so, back to System Report to see what's going on with the USB power draw.

    When a device pulls more than spec power, you run into what is basically undefined behavior across the ports: sometimes works, sometimes not.

    ADD: since a hub, if you have spare port there, plug the drive in that. Won't hurt anything and can use the Mac's USB ports for things like thumb drives (they use next to nothing re: power).
     
  13. Crotonmark thread starter macrumors regular

    Crotonmark

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    Location:
    Westchester County, NY
    #13
    as long as I can plug into the Hub port and not cause an issue I am happy
    I will test the rest later
    thanks
     
  14. Crotonmark thread starter macrumors regular

    Crotonmark

    Joined:
    Jul 22, 2011
    Location:
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    #14
    Can someone interpret this for me?
    How much power is my 8TB drive using that I have to go thru the Hub?


    USB 3.1 Bus:



    Host Controller Driver: AppleIntelCNLUSBXHCI

    PCI Device ID: 0xa36d

    PCI Revision ID: 0x0010

    PCI Vendor ID: 0x8086



    BUP Slim Mac SL:



    Product ID: 0xab25

    Vendor ID: 0x0bc2 (Seagate LLC)

    Version: 1.00

    Serial Number: NA7WBXAG

    Speed: Up to 5 Gb/sec

    Manufacturer: Seagate

    Location ID: 0x14b00000 / 4

    Current Available (mA): 900

    Current Required (mA): 144

    Extra Operating Current (mA): 0

    Media:

    BUP Slim Mac SL:

    Capacity: 2 TB (2,000,398,933,504 bytes)

    Removable Media: No

    BSD Name: disk2

    Logical Unit: 0

    Partition Map Type: GPT (GUID Partition Table)

    USB Interface: 0

    Volumes:

    EFI:

    Capacity: 209.7 MB (209,715,200 bytes)

    File System: MS-DOS FAT32

    BSD Name: disk2s1

    Content: EFI

    Volume UUID: 0E239BC6-F960-3107-89CF-1C97F78BB46B

    Seagate Backup Plus Drive:

    Capacity: 2 TB (2,000,054,960,128 bytes)

    Available: 352.66 GB (352,660,471,808 bytes)

    Writable: Yes

    File System: Journaled HFS+

    BSD Name: disk2s2

    Mount Point: /Volumes/Seagate Backup Plus Drive

    Content: Apple_HFS

    Volume UUID: CA2C54C9-A019-3295-8667-1D4A5821A693



    PRO-100 series:



    Product ID: 0x10de

    Vendor ID: 0x04a9 (Canon Inc.)

    Version: 1.04

    Serial Number: 21357F

    Speed: Up to 480 Mb/sec

    Manufacturer: Canon

    Location ID: 0x14700000 / 3

    Current Available (mA): 500

    Current Required (mA): 2

    Extra Operating Current (mA): 0

    1284 Device ID: MFG:Canon;CMD:BJL,BJRaster3,BSCCe,NCCe,IVEC,IVECPLI;SOJ:BJNP2,BJNPe;MDL:pRO-100 series;CLS:pRINTER;DES:Canon PRO-100 series;VER:1.040;STA:10;FSI:03;HRI:6;MSI:AON,B240,DCW,E3,FON,HASF,JOFF,K21000700;PDR:3;RRF:00;PSE:ACTC58685;CID:CA_IVEC1TYPE3_IJP;



    FaceTime HD Camera (Built-in):



    Product ID: 0x8511

    Vendor ID: 0x05ac (Apple Inc.)

    Version: 72.52

    Serial Number: CCG909103R2H34FFF

    Speed: Up to 480 Mb/sec

    Manufacturer: Apple Inc.

    Location ID: 0x14600000 / 2

    Current Available (mA): 500

    Current Required (mA): 500

    Extra Operating Current (mA): 0

    Built-In: Yes



    Hub:



    Product ID: 0x005a

    Vendor ID: 0x0409 (NEC Corporation)

    Version: 1.00

    Speed: Up to 480 Mb/sec

    Location ID: 0x14400000 / 5

    Current Available (mA): 500

    Current Required (mA): 100

    Extra Operating Current (mA): 0



    Backup+ Hub:



    Product ID: 0xab44

    Vendor ID: 0x0bc2 (Seagate LLC)

    Version: 48.85

    Serial Number: 18CA7307B1W8

    Speed: Up to 480 Mb/sec

    Manufacturer: Seagate

    Location ID: 0x14440000 / 8

    Current Available (mA): 500

    Current Required (mA): 100

    Extra Operating Current (mA): 0



    Backup+ Hub WH:



    Product ID: 0xab39

    Vendor ID: 0x0bc2 (Seagate LLC)

    Version: 1.00

    Serial Number: NA8T8ALX

    Speed: Up to 480 Mb/sec

    Manufacturer: Seagate

    Location ID: 0x14441000 / 9

    Current Available (mA): 500

    Current Required (mA): 0

    Extra Operating Current (mA): 0

    Media:

    Backup+ Hub WH:

    Capacity: 8 TB (8,001,563,221,504 bytes)

    Removable Media: No

    BSD Name: disk3

    Logical Unit: 0

    Partition Map Type: GPT (GUID Partition Table)

    USB Interface: 0

    Volumes:

    EFI:

    Capacity: 209.7 MB (209,715,200 bytes)

    File System: MS-DOS FAT32

    BSD Name: disk3s1

    Content: EFI

    Volume UUID: 0E239BC6-F960-3107-89CF-1C97F78BB46B

    Seagage Media Drive:

    Capacity: 8 TB (8,001,219,248,128 bytes)

    Available: 7 TB (7,000,492,818,432 bytes)

    Writable: Yes

    File System: Journaled HFS+

    BSD Name: disk3s2

    Mount Point: /Volumes/Seagage Media Drive

    Content: Apple_HFS

    Volume UUID: F0ED26B9-9297-3822-9D56-AAA0028959BB



    Video Capture:



    Product ID: 0x0037

    Vendor ID: 0x0fd9 (Elgato Systems GmbH)

    Version: 40.01

    Serial Number: 2VC309901000461011608

    Speed: Up to 480 Mb/sec

    Manufacturer: Elgato

    Location ID: 0x14430000 / 7

    Current Available (mA): 500

    Current Required (mA): 500

    Extra Operating Current (mA): 0



    Perfection610 :



    Product ID: 0x0103

    Vendor ID: 0x04b8 (Seiko Epson Corp.)

    Version: 0.01

    Speed: Up to 12 Mb/sec

    Manufacturer: EPSON

    Location ID: 0x14410000 / 6

    Current Available (mA): 500

    Extra Operating Current (mA): 0
     
  15. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #15
    Some USB drives are "quirky".
    That is, they connect properly some ways -- but not via other ways.

    It may have something to do with all the different "controller chips" and control boards that various USB devices have. Or it may be for other reasons.

    If the drive in question connects ok "through the hub", but not when plugged directly into the Mac, well... "what works, works". And leave it at that.

    A question:
    Have you tried DISCONNECTING EVERYTHING except for the "problem drive"?
    Does it connect and show up on the desktop if you do that?
     
  16. Crotonmark thread starter macrumors regular

    Crotonmark

    Joined:
    Jul 22, 2011
    Location:
    Westchester County, NY
    #16
    I DID do that
    I shut down the Mac and unplugged all but the one drive
    rebooted and no change
    Plugged everything back in and once in the hub it appeared mounted
    It is so weird that on the 2009 mac there was no issue
    Anyway, it is mounted so I am not worrying.

    Was anyone able to make sense of the post I put up from the system report?
     
  17. NoBoMac macrumors 68020

    Joined:
    Jul 1, 2014
    #17
    Well, looks like the 8TB drive needs 100mA out of the 500 available to it.

    However, whatever is "Elgato Video Capture", that is needing all 500mA available. And the NEC hub appears to want 100mA. Add that up, that's 700mA with 500mA available.

    As Fishrrman said, USB can be quirky, particularly HDDs that don't have their own power supplies. If works in the hub, so be it.
     
  18. Crotonmark, Apr 23, 2019
    Last edited: Apr 23, 2019

    Crotonmark thread starter macrumors regular

    Crotonmark

    Joined:
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    Location:
    Westchester County, NY
    #18
    Thanks. Weirdly the external drive in question has its own power supply. Weird but I’m in the hub for now.

    Also weird it mounted on the 2009
     

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17 April 22, 2019