USB flash drive won't mount

I have a strange problem with a USB flash drive which refuses to mount on the desktop of my MDD FW800. It registers in System Profiler but not in Disk Utility. I can't get it to mount using Terminal either. The Terminal screen says it has mounted but it doesn't appear on the desktop and I can't access it. However, if I do a restart with the the drive plugged in, it does mount. If I eject it and then try to plug it in again, it won't mount! Very frustrating.
It works fine on my Powerbook and my Digital Audio so it can't be the drive itself that's the problem. Not quite sure when this started but it may have been after I installed a PCI USB2.0 card (a Ratoc Rex-PCIU3). The card itself works fine with other USB products and I don't have any deep sleep problems with it either. I'm stumped.
Any suggestions anyone?
Alex
G4 1.25GHz Dual MDD FW800; G4 Digital Audio; Powerbook 800MHz DVI   Mac OS X (10.4.8)  

Hello rickame
Click on the desktop then go up to the menu bar and select Finder / Finder Preferences / General and make sure the box's are checked for Hard disk, External disks, etc.. then reconnect the drive. If you still don't see it on the desktop it may have been improperly disconnected from the iMac while mounted, look to see if it show's up in Disk Utilities and the System Profiler on the USB bus. If you are plugging it into the keyboard, try one of the USB ports on the back of the iMac or a powered hub. There also could be a conflict with other USB devices, try ejecting and disconnect things like an iPod, a printer/scanner or camera, then restarting the iMac and connect only the Flash drive.
Dennis

Similar Messages

  • Usb flash drive won't mount in disc utility

    running mountain lion on new imac .... usb flash drive was working, the next hour inserted it again and it doesn't show up in "devices".  Opened disc utility - it shows up there but won't mount and all the "verify disc" and repair disc" functions are greyed.
    Same result when I insert it into my macbook.

    Did you put it in another computer and save data to it since it last worked? did you properly eject the disk?
    sounds like you need to reformat the flash drive
    If you need to save the data , plug it in to a pc and see if you can copy to hd.
    Then take to your Mac and format it in disk utility. I recommend using windows format.
    Then plug in to your PCM and get the files.
    Then.. Eject the USB disk, don't just pull it out. Take to your Mac and it should mount

  • Flash Drive Won't Mount Except At Startup

    Just bought a little 1Gb USB Flash drive which is USB 1.1 compatible. I want it for transferring files back and forth between my OS 10.4 G5 at home and the old blue and white G3 (OS 9.2.2) I have to use at work.
    Trouble is, the G3 won't mount the drive unless it's inserted before startup. Apple System Profiler knows it's there when I put it in one of the USB slots on the back of the computer or in the spare slot on the Macally keyboard, but in neither case does it mount. I've looked at the USB events log in System Profiler and it registers the device being inserted and its call on the USB Mass Storage driver like this:
    13436.785: [ 75579098]: Driver - Hub Driver - Device found, calling USBHubAddDevice. Port 3
    13437.266: [ 75580125]: Expert - LoadClassDriver: USBCompositeDevice1.5.6 - calling driver initialize routine... 0
    13437.267: [ 75580125]: Expert - LoadClassDriver: USBCompositeDevice1.5.6 - driver initialization completed 0
    13437.578: [-1744497139]: Expert - LoadInterfaceDriver: USBMassStorageDriver - calling driver initialize routine... 0
    13437.580: [-1744497139]: Expert - LoadInterfaceDriver: USBMassStorageDriver - driver initialization completed 0
    So there's nothing there that says "fail" there unless that's what the zero at the end of each line means.
    If I shut down the computer, insert the drive then start up, it shows up on the desktop no problem. It won't show up again if I trash and remove it though.
    However, a graphite G4 in my office, which also runs OS 9.2.2 and seems to have an identical system install, will mount the drive with no problem on any of its USB ports.
    Is this a case of the G3's USB ports being underpowered and there's no way round it, or is there a fix out there somewhere?
    G3 Blue & White   Mac OS 9.2.x  

    However, a graphite G4 in my office, which also runs OS 9.2.2 and seems to have an identical system install, will mount the drive with no problem on any of its USB ports.
    Try this: Copy all of the extensions on the G4 that have USB in their names into the Extensions folder on the G3, replacing the USB extensions that are there; then restart and test again. Some of them may be older or newer versions than the ones on the G3 now, and that can make a difference. Note that in OS 9.x, it isn't always the newer versions of the USB extensions that work better.
    Also see this user tip from Apple employee Joerg Weise. In it he lists 6 USB extensions (with version numbers) that can often resolve USB problems in OS 9, even under circumstances different from those described at the beginning of his comments.

  • BUG: Sandisk USB flash drive in "half-mounted" state after wake from sleep

    My Sandisk Cruzer Crossfire 4GB Flash Drive is left in a half-mounted state after wake from sleep. The Finder believes the drive is still mounted, the icon is on the Desktop. However opening a file on the drive, or trying to eject the drive, results in a long beach ball, followed by a message that I removed the drive without Ejecting it first. The same drive continues to work fine on my Tiger machine, and on PCs.
    Bug Report:
    Setup:
    Macbook 1st Gen (2.0 Ghz)
    Mac OS X Leopard 10.5 Clean Install
    Sandisk Cruzer Crossfire 4GB USB Flash Drive (in either port)
    Repro:
    Plug in the drive.
    Close the MacBook to put it to sleep
    Reopen the MacBook
    Result:
    The lights on the flash drive never light back up after wake from sleep. Navigating the drive, or trying to eject it results in a "you removed the device without ejecting it first" message.
    Expected:
    Drive should still be mounted and accessible after waking back up.

    It may be a design flaw in the device. Mac OS X does a lot more power management than most other OSes, including tearing devices down to little or no power during sleep. It is possible that the device simply misbehaves due to corrupted memory state or reports a substantially different GUID or something similarly bizarre upon wake. (Okay, that last one wouldn't technically be a power management issue....)
    If it doesn't have any problems except when sleeping the system, I would just make sure I unmounted it before putting the machine to sleep and wouldn't worry about it. Maybe check with Sandisk to see if they have a firmware updater for the device.

  • USB memory drive won't mount

    I tried to mount a USB memory drive on my relatively new MBA (10.6.4) today, but it doesn't mount. Sometimes it doesn't even show up in Disk Utility. When it does, only the disk shows up, the disk's name doesn't show up, it is grayed out. I did disk repair and verify and they are OK. It is USB 2.0. I have tried both USB slots.
    I have tried the same USB memory drive on an older MacBook Air (Rev C, about 15 months old) and on a Powerbook and the USB memory drive mounts fine. I can open the drive and see the contents and manipulate the files etc.)
    The USB drive is formatted "extended OS Journal".
    I also tested out another USB memory drive and it too fails to mount properly as well on the new MBA.
    I don't know whether it's a hardware issue or a Mac OSX issue so I posted here first.
    The older MBA has 10.6.4 too.
    Earlier this morning, the USB memory drives did mount on the new MBA but it was touch and go. Sometimes they did mount and I could manipulate files, but other times they didn't mount.
    Now, this evening, they won't mount at all.

    I checked Verify permissions and I repaired permissions after I tested out the USB drives. Seems like there were many permissions to be repaired even though I had just repaired them before.
    I think sticking in the USB flash memory drives mucks up the permissions. I don't know why that is.
    Maybe they have files created from older operating systems (10.6.1, and 10.3.9) that caused this.
    In this case, I might have to check permissions and repair them every time I use one of these thumb drives especially if they contain files and folders from the older Macs.

  • Flash drive won't mount on iMac but mounts on all other computers

    I have two new PNY 8GB flash drives and both work on a Windows 7 laptop and two different Macbook Pro computers.  One Macbook is running 10.6 and the other is running 10.7.  Two other flash drives work just fine on the iMac but these PNY sticks do not.
    I have restarted the iMac with and without the sticks plugged in.
    I have tried all USB ports.
    I have tried Disk Utility but I do not see anything on the left.
    I have look in /Volumes and I don't see the USB stick.
    What am I missing?  Why won't it work on the iMac but works on the Macbooks?

    My other USB memory sticks, an iPhone, and two iPods work normally plugged into the USB connectors on the iMac.  It is just this one brand of USB sticks that don't work on the iMac BUT the same sticks work on two different MacBook Pro computers and even a Windows 7 computer.

  • USB hard drive won't mount on startup

    I recently (2 days ago) purchased a new 21.5" iMac (mid 2011).  Yesterday I installed the update to 10.6.8, and since then have had an unusual problem.  I own two external USB drives.  One for Time Machine, and another that houses my iTunes library.  Both are formated to Mac File System (Journaled).  When I originally set up the computer, and completed the transfer of my data and accounts from my old Mac, both of the external drives mounted on the desktop exactly as they should and everything worked without issue.  But then I did a Software update, which installed a bunch of updates to iTunes, Java, etc.  This update included the update which took the system from 10.6.6 to 10.6.8.  Now whenever I reboot the computer, the drive that houses my iTunes library will not mount when my desktop loads.  I have to reach around the computer and physically disconnect and reconnect the USB cable before the computer will recognize the volume.  Disk Utility won't even see it until I do this.  Once I reconnect the cable, the drive works as it should until I reboot again, and I have to disconnect/reconnect the cable again to get it to work.
    I don't believe this is a problem with the hard drive itself, because it worked as it should up until the software update, and it continues to work as it should on the old computer that it was hooked up to before I upgraded.
    I have searched google, and apple.com for similar situations and I have come up empty.  Is there anyone who might have any ideas on how to fix this?  it's rather annoying to reconnect the drive each and every time I turn on the computer.
    Thanks!

    Repair Disk Permissions on the internal HD and also on the EHDs. Then do restart in Safe Mode and then do both SMC and PRAM resets.
    SMC RESET
    Shut down the computer.
    Unplug the computer's power cord and all peripherals.
    Press and hold the power button for 5 seconds.
    Release the power button.
    Attach the computers power cable.
    Press the power button to turn on the computer.
    PRAM RESET
    Shut down the computer.
    Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.
    Roger

  • USB LaCie Porche 500gb usb external drive won't mount

    Here is the scoop.
    A few days ago I was using my LaCie 500gb external drive and the usb chord was accidently yanked out whilst adding a photo to iphoto.
    So i thought uh oh better close everything disconnect wait a while then restart.
    So I did...plugged it back in...it made all the normal start up noises little amber light came on but it didn't appear on the desktop..nor in disk utility. But it did appear in system profiler.
    Yesterday after resetting the "pram" or whatever it is that happens when you hold p + r + the apple key and alt....or ctrl and still no relief.
    So i leave it plugged in over night to see if it is merely slow for some reason. When i awake this morning it is in disk utility even with the "time machine" volume...so presumably all the files are more or less still intact. But it still isn't mounting. So after clicking repair disk ....three or more hours later i get this in the log
    2008-07-18 10:07:22 +0100: Verify and Repair volume “Time Machine Backups”
    Starting repair tool: 2008-07-18 10:07:22 +0100
    2008-07-18 10:07:22 +0100: Checking Journaled HFS Plus volume.
    2008-07-18 10:07:22 +0100: Detected a case-sensitive catalog.
    2008-07-18 10:07:22 +0100: Checking Extents Overflow file.
    2008-07-18 10:07:22 +0100: Checking Catalog file.
    2008-07-18 10:14:21 +0100: Checking multi-linked files.
    2008-07-18 10:23:17 +0100: Checking Catalog hierarchy.
    2008-07-18 10:42:25 +0100: Checking Extended Attributes file.
    2008-07-18 10:42:46 +0100: Invalid sibling link
    2008-07-18 10:42:46 +0100: Repairing volume.
    2008-07-18 10:42:46 +0100: Rechecking volume.
    2008-07-18 10:42:46 +0100: Checking Journaled HFS Plus volume.
    2008-07-18 10:42:46 +0100: Detected a case-sensitive catalog.
    2008-07-18 10:42:46 +0100: Checking Extents Overflow file.
    2008-07-18 10:42:46 +0100: Checking Catalog file.
    2008-07-18 10:49:46 +0100: Checking multi-linked files.
    2008-07-18 10:58:37 +0100: Checking Catalog hierarchy.
    2008-07-18 11:17:59 +0100: Checking Extended Attributes file.
    2008-07-18 11:18:20 +0100: Invalid sibling link
    2008-07-18 11:18:20 +0100: Repairing volume.
    2008-07-18 11:18:20 +0100: Rechecking volume.
    2008-07-18 11:18:20 +0100: Checking Journaled HFS Plus volume.
    2008-07-18 11:18:20 +0100: Detected a case-sensitive catalog.
    2008-07-18 11:18:20 +0100: Checking Extents Overflow file.
    2008-07-18 11:18:20 +0100: Checking Catalog file.
    2008-07-18 11:25:15 +0100: Checking multi-linked files.
    2008-07-18 11:34:06 +0100: Checking Catalog hierarchy.
    2008-07-18 11:53:38 +0100: Checking Extended Attributes file.
    2008-07-18 11:54:01 +0100: Invalid sibling link
    2008-07-18 11:54:01 +0100: Repairing volume.
    2008-07-18 11:54:01 +0100: Rechecking volume.
    2008-07-18 11:54:01 +0100: Checking Journaled HFS Plus volume.
    2008-07-18 11:54:01 +0100: Detected a case-sensitive catalog.
    2008-07-18 11:54:01 +0100: Checking Extents Overflow file.
    2008-07-18 11:54:01 +0100: Checking Catalog file.
    2008-07-18 12:01:19 +0100: Checking multi-linked files.
    2008-07-18 12:10:29 +0100: Checking Catalog hierarchy.
    2008-07-18 12:28:25 +0100: Checking Extended Attributes file.
    2008-07-18 12:28:46 +0100: Invalid sibling link
    2008-07-18 12:28:46 +0100: 2008-07-18 12:28:46 +0100: The volume Time Machine Backups could not be repaired after 3 attempts.
    it would appear that the problem is "invalid sibling link"
    Any ideas people.

    nonononon...
    Every tech will offer to reformat the HDD or suggest its broken.
    The table of contents are corrupted.
    What I do is remove the drive from the case and put it in a PC and run "mac drive" software then choose repair volume and your good to go.
    Iv done this as a PC tech for several of my mac customers.
    But for the life of me I cant appear to reproduce the issue and don't know what the issue is.
    Several macbook guys have given me their "broken" USB drive and the TOS is corrupted. Its really a royal pain in the back side.
    What is the issue, how to make it stop?

  • External usb hard drive won't mount on G4

    I just bought an external USB 2.0 hard drive enclosure for a 30 gig HD I had in my old G3 Powerbook.It mounts fine on the older powerbook G3 with OS X 10.1.2, but not on the G4 titanium 10.3.9 I bought it for. Please help!

    http://www.doubleh.com.tw/download/IDE%20Enclosure/Usb2.0%20IDE%20Enclosure/Alum inum%20case%20Enclosure(Genesys)/driver/Mac/Mac%20%2010.2x/
    There used to be a couple of explanation on some ones' nomepage - the idea is (I think ) that hardware developers think it comes with OS and apple think that it comes with hardware driver.
    Here is a discussion board in Swedish, but there used to be some English page somewhere ...
    http://64.233.183.104/search?q=cache:KRxGo5q6MJcJ:www.99mac.se/forum/archive/ind ex.php/t-40336.html+GeneIOUSBIDE230&hl=en&ct=clnk&cd=3&client=safari

  • Firewire and USB hard drives won't mount on Xserve - 10.5.8

    I have a triple interface drive set for rotating backups, and they've stopped mounting on my Xserve. Disk Utility can't see them at all, but System Profiler sees when I plug them in. The drive specifics for the volume are missing, but they ID correctly. Same drives plugged into an iMac and a MacBook Pro mount perfectly every time, both over USB and Firewire. Disk Utility via the iMac shows no problems at all. I've tried rebooting the Xserve... doesn't help.
    I kinda need my backup to run on my server. Thoughts on how to resolve?

    Sounds like you should be posting to the Xserve forum.

  • USB Hard drive won't mount

    I have a problem with a hard drive connected in an external USB enclosure to a Mac Mini Core Duo, that occasionally fails to mount automatically when powered up. Apple's System Profiler "sees" the drives (and both formatted partitions on it), but I cannot access the files. Is there any type of utility that will allow me to mount the drive manually?
    Thanks in advance,
    Robert

    try Apple's Disk Utility
    /Applications/Utilities/Disk Utility
    regards,
    Pete.

  • Upgraded my PowerBook G4 to Leopard 10.5.8 - USB/Jump drives won't mount

    I just upgraded my OS to 10.5.8. Now, when I boot with any attached jump drive it pops up on my desktop for about 10 secs and then gives me a dialog box with a big stop sign w/exclamation point and reads "device removal" - the device you removed was not ejected properly....the 'icon' for the drive disappears and if I try to re-insert it, it doesn't read it. Any ideas why that might be? I have run all the software updates earlier today. What could I be missing?

    Thank you so much for the suggestions. You are correct, in 'wiggling' the drive it seems to read and then not read...the jump drive is definitely damaged. I will make attempts to pull files slowly, one at a time. Yes, I wish I had a back up but I don't. I should have burned the files on a CD as a second back up but didn't,my bad. It's okay, I'll have to manage. I'm happy it's not my USB port but a faulty drive. Thank you again for helping me out, greatly appreciate it.

  • Buffalo USB Hard Drive won't mount after 10.4.10 upgrade

    After updating to OS X 10.4.10, my Buffalo Drivestation wouldn't mount. My MacBook could see that it was connected in System Profiler, but I couldn't access it. I (rather painfully !) backed out the update and reverted back to 10.4.9. Has anyone else had this problem ? Is there a solution that lets you use 10.4.10 ?

    I have the exact same problem! I tried accessing it through my Windows, and it worked, but I have to say this is very disappointing and upsetting.

  • Usb flash drive wont mount on desktop

    my usb flash drive no longer mounts on the desktop or shows up in disk utility.When i plugged it in the green led did a series of flashes with 3 intervals and the cursor froze.Unplugging it brings the computer back to normal.It works fine on a powerbook and on a pc at work.I re-formated the drive on the pc using fat32 and it works fine.(dragged files out first and back again after re-format).Now when i bring it home the green light flashes continuous and does not affect the computer in any way but it still wont show on desktop or in disk utility?.
    imac 333   Mac OS X (10.3.9)   512m ram 40gig 7200 harddrive

    I have a few devices connected all right but they work fine on either usb input. I think maybe the system software may be damaged somehow but i am only guessing and i dont want to re-install in case i am wrong.
    imac 333 Mac OS X (10.3.9) 512m ram 40gig 7200 harddrive

  • [Solved]USB Flash Drive inaccessible.

    Hi there.
    I have installed Arch Linux on my Sony laptop and I have configured it so that most stuff works. The only problem I'm facing now, is that my USB Flash Drive won't show up when I plug it in. I have tried restarting ehci service, but it does not solve anything. I had this problem many years ago with another computer running Linux, but I can't remember how it got solved. Connecting a USB-mouse works perfectly but not a flash drive. The drive is a FAT32 formatted Kingston.
    This is my dmesg log:
    [ 109.300651] usb 2-1.3: new high-speed USB device number 4 using ehci_hcd
    [ 109.613294] Initializing USB Mass Storage driver...
    [ 109.613459] scsi7 : usb-storage 2-1.3:1.0
    [ 109.613577] usbcore: registered new interface driver usb-storage
    [ 109.613579] USB Mass Storage support registered.
    [ 110.614456] scsi 7:0:0:0: Direct-Access Generic Flash Disk 8.07 PQ: 0 ANSI: 2
    [ 110.616674] sd 7:0:0:0: [sdc] 8237056 512-byte logical blocks: (4.21 GB/3.92 GiB)
    [ 110.617821] sd 7:0:0:0: [sdc] Write Protect is off
    [ 110.617835] sd 7:0:0:0: [sdc] Mode Sense: 03 00 00 00
    [ 110.618550] sd 7:0:0:0: [sdc] No Caching mode page present
    [ 110.618561] sd 7:0:0:0: [sdc] Assuming drive cache: write through
    [ 110.621899] sd 7:0:0:0: [sdc] No Caching mode page present
    [ 110.621908] sd 7:0:0:0: [sdc] Assuming drive cache: write through
    [ 110.787723] sdc: sdc1
    [ 110.880634] sd 7:0:0:0: [sdc] No Caching mode page present
    [ 110.880647] sd 7:0:0:0: [sdc] Assuming drive cache: write through
    [ 110.880655] sd 7:0:0:0: [sdc] Attached SCSI removable disk
    Running openbox with PCManFM. Any clues how to solve this?
    Last edited by light (2013-03-17 21:26:26)

    s1ln7m4s7r wrote:
    For what i can see from the log  there is no problem.
    Have you tried to manually mount it? To see if it is a PCManFM issue. Also, have you checked this:
    https://wiki.archlinux.org/index.php/PC … ge_devices
    Hi.
    I tried installing gvfs, apparently I uninstalled it for some reason before.   But it did not help mounting the flash drive. So I tried mounting it manually and it worked (Yaay!). But it complained that my flash drive was not mentioned in fstab. So I looked in fstab and the only ones listed is my root partion "/" and "/home". So how do I add USB mounting to fstab? I'm a little bit confused.
    And one off-topic question: Shouldn't my "/var" partion also be mentioned in fstab?
    Thanks for helping me
    Edit: This is how fstab looks right now
    # /etc/fstab: static file system information
    # <file system> <dir> <type> <options> <dump> <pass>
    # /dev/sda2 LABEL=/
    UUID=ed07bdb6-61c6-4cc7-b98d-122a869046f1 / ext4 rw,relatime,data=ordered 0 1
    # /dev/sda4 LABEL=/home
    UUID=7448100b-682b-430f-9e59-327ce6f9f22c /home ext4 rw,relatime,data=ordered 0 2
    Last edited by light (2013-03-17 20:54:38)

Maybe you are looking for

  • How to migrate the datasource from Bea 8.1 to Bea 10

    Hi, I have to migrate an application from bea 8.1 to 10. the configuration in 8.1 is as follow : (config.xml) <JDBCConnectionPool DriverName="oracle.jdbc.driver.OracleDriver" InitialCapacity="10" KeepXAConnTillTxComplete="true" MaxCapacity="150" Name

  • Problem handling special characters while generating pdf

    I have special char stored in DB when user pasted that on the screen. i will read and make the DOM and add as attribute. when i apply xslt transformer and send it to driver(FOP) . it gives following error. FOPException; invliad character &#11 in xml.

  • 'Missing consumption account determination' Error -Automatic PR

    Hi Colleagues I hope someone can shed some light on this issue for me. I have configured a specific process for auto PR, i.e. when we create a SO and enter the item qty, a "create purchase requisition" appears (ME51). I always get an error message re

  • Sidebar does not display when in Develop module

    Issues with the sidebars in Develop module such as when hovering mouse over left or right on screen does not make sidebar show.  Also, when in full screen mode the sidebars seem to have been completely disabled.  Have just upgraded from LR 3 to 5.

  • X3-02 + Ovi 3.1.1.90 makes contacts screen permane...

    Hi - I have a new X3-02 which was updated via Ovi-suite v3.1.1.90 I then copied contacts from sim to phone, then synced. At this point, the contacts page in Ovi just shows the little dotted circles just endlessly spinning. Any ideas anyone? I bought