Previous 1 2 Next 20 Replies Latest reply: Feb 25, 2015 4:46 AM by head4heights
Snap4u Level 1 Level 1 (0 points)

Hi I have tried a number of different brand USB drives but none show in finder.  I have check in the profiler and they show there.  I have a Macbook Pro running 10.6.x. I am relatively new to Macs so all constructive suggestions welcome.

 

J


MacBook Pro, Mac OS X (10.6.8)
  • fane_j Level 4 Level 4 (3,660 points)

    Snap4u wrote:

     

    I have tried a number of different brand USB drives but none show in finder.

    Finder > Preferences > General > Show these items on the desktop

     

    Is "External disks" checked?

     

    Finder > Preferences > Sidebar > DEVICES

     

    Is "External disks" checked?

  • Snap4u Level 1 Level 1 (0 points)

    Thanks for responding so promptly      Yes this box is checked.

  • fane_j Level 4 Level 4 (3,660 points)

    What MacBook?

     

    Are you connecting directly to the MBP, or through a hub?

     

    Do they show in Disk Utility?

     

    Are these drives low capacity thumb drives (eg, 4GB) or high capacity (eg, 500GB)?

  • Snap4u Level 1 Level 1 (0 points)

    These drives are plugged in directly.  I have a choice of two ports.  When I plug in the activity light goes then stops.  I have only tried 4gb or smaller.

  • fane_j Level 4 Level 4 (3,660 points)

    Do they show in Disk Utility?

  • Shootist007 Level 6 Level 6 (16,645 points)

    Are you using a USB powered drive? In other words the USB drive does not have a external AC power adapter?

     

    This is a ongoing problem. Some, really most, notebooks, whether Mac or PC, do not put out enough power on the USB ports to power these type of drives. Some work but some, most, don't.

    You can buy a USB Y cable that connects to 2 USB ports at the same time giving the drive more power.

     

    Other then that if the drive is listed in Disk Utility you may need to partition and format it before the drive will show in Finder.

    But to my knowledge most of these external drive come formatted in one way or another so that any operating system, Mac or Windows, can see them as soon as they are connected.

  • Snap4u Level 1 Level 1 (0 points)

    HI, I have specifically bought usb drives that are supposedly formated for both Mac (10.6.X) and PC.  My feeling is that it must be a setting or something.  I have windows loaded on the same machine and run parallels6 and the drive show up know problem so I don't think it is a power issue.  I just really want to be able to plug it in with the Mac software running only.

  • fane_j Level 4 Level 4 (3,660 points)

    Do they show in Disk Utility, or not?

  • Snap4u Level 1 Level 1 (0 points)

    No they are not - just the HD and DVD drives

  • fane_j Level 4 Level 4 (3,660 points)

    So they show up in System Profiler, but not in Disk Utility.

     

    Post the info on one of them from System Profiler. For instance, if I attach a SanDisk Cruzer through a hub, I get something like this

     

    USB2.0 Hub:

     

      Product ID:          0x0608

      Vendor ID:          0x05e3  (Genesys Logic, Inc.)

      Version:          77.64

      Speed:          Up to 480 Mb/sec

      Location ID:          0xfd120000 / 4

      Current Available (mA):          500

      Current Required (mA):          100

     

    Cruzer Edge:

     

      Product ID:          0x556b

      Vendor ID:          0x0781  (SanDisk Corporation)

      Version:           1.03

      Speed:          Up to 480 Mb/sec

      Manufacturer:          SanDisk

      Location ID:          0xfd121000 / 8

      Current Available (mA):          500

      Current Required (mA):          200

     

    (But delete the serial number, if any, or anything else of that kind.)

  • Snap4u Level 1 Level 1 (0 points)

    Yes, that is correct - showing in profiler but not in disk utility

     

    This is a lexar jumpdrive 70s

    JumpDrive:

     

      Product ID:          0xa201

      Vendor ID:          0x05dc  (Lexar Media, Inc.)

      Version:          11.00

      Serial Number:          AAOVD4E9LKLC1RV0

      Speed:          Up to 480 Mb/sec

      Manufacturer:          Lexar

      Location ID:          0xfa130000 / 6

      Current Available (mA):          500

      Current Required (mA):          200

  • fane_j Level 4 Level 4 (3,660 points)

    That's a tough one, because everything seems normal (btw, did you install any Lexar software?).

     

    I'd've said, try a different brand, but you've already tried that.

     

    Let's try to isolate the problem. In Terminal, issue the command

     

    $ diskutil list

     

    (where $ is your prompt). Does the listing contain anything that could be the USB drive? If yes, please post it.

  • Snap4u Level 1 Level 1 (0 points)

    Yes I have tried HP100v, Sandisk Cruiser & today's purchase the lexar s70.

     

    here is the screen grab from the Terminal.  I ran it twice with the s70 in each port. 

     

    Last login: Thu Jan 12 15:48:29 on console

    Joanne:~ embroidery$ diskutil list

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI                         209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            499.8 GB   disk0s2

    Joanne:~ embroidery$ diskutil list

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI                         209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            499.8 GB   disk0s2

    Joanne:~ embroidery$

  • fane_j Level 4 Level 4 (3,660 points)

    Unfortunately, I don't know what the problem is, so the following is a bit of a scatter-gun approach.

     

    Self-powered hub.

    It is possible (not likely, perhaps a tad more likely if your MBP is a 13″ one) that there's an issue with USB power. If you have one, try connecting a thumb drive through a self-powered hub, ie, one with a separate power supply (not a bus-powered hub).

     

    New user.

    Create a new admin user account. Restart and log in as the new user.

    Try a thumb drive. If it shows up in Disk Utility, no need to perform the other steps.

     

    Safe Mode.

    Shut down, then start in Safe Mode, as described here

     

    <http://support.apple.com/kb/HT1455>

     

    Try a thumb drive again. Then restart as usual (the first start after Safe Mode takes longer; that is normal). Try the thumb drive once more.

     

    Reset NVRAM.

    It is possible (not likely) that a setting in NVRAM is causing an error. Follow the instructions here

     

    <http://support.apple.com/kb/HT1379>

     

    to reset NVRAM.

     

    Reset the SMC.

    Follow the instructions below

     

    <http://support.apple.com/kb/HT3964>

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