None of my usb flash drives are mounting

OS X 10.6.8 - None of my usb flash drives are mounting. They don't show up in disk utility either. System proflier does show the flash drives. I've run disk warrior and the flash drives show there as well. I've tried all of the usb outlets with several flash drives and none of them show up. I can use the same usb outlets to use my wireless keyboard, mouse and also my ipad.
Finders preferences are all checked to show items on desktop.
One of my flash drives I tried several times and finally got this screen message. "System extension cannot be used The system extension "/System/Library/Extension/IOStorageFamily.Kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update. Non of my other 6 flash drives mount and they do not receive any screen message.
I've also run repair disk permissions several times and the it says permissions repaired so I run it again and the same issued it said it was repaired, it lists again. I've done this several times with the same results.

Hello
from that
"System extension cannot be used The system extension "/System/Library/Extension/IOStorageFamily.Kext" was installed improperly and cannot be used"
try this
- boot from your original system disc
- plug one of your usb flash drives
- see if installer software could use usb flash drives as target for install
( testing your usb flash drive from a know good system software )
- DO not perform install on flash drive , just need to know if flash is usable
if it could , re-install your system or if it was updated from a previous version re-install 10.6.8 combo update
http://support.apple.com/kb/DL1399
checking for any missing update ?
HTH
Pierre

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USB Flash Drive not mounting

I recently bought an 8GB USB flash drive, which came formatted FAT-32. The drive was put into a friend's Windoze laptop and had a couple GBs of jpeg and avi files transferred to it. I took the drive home and put it in my white MacBook (4GB RAM, Leopard 10.5.8) and it would not mount. I put it in my G4 MacMini; likewise, it wouldn't mount. I am assuming it also won't mount in all my older Macs with USB, either. I returned it to the Windoze laptop, and it ALSO wouldn't mount this time, except as one pulled the flash drive from the Windoze laptop, for a second a window with the flash drive's contents would flash on the desktop of the laptop. Originally, the flash drive was "properly" ejected from the Windoze laptop.
On the MacBook, both Disk Utility and DiskWarrior do not see the flash drive when it is in the USB port (either port). However, Apple System Profiler does recognize when it is plugged into the port. ASP returns the following information when the flash drive is in the high speed USB port:
"Flash Disk:
Product ID: 0x3234
Vendor ID: 0x1221
Version: 0.00
Serial Number: 10000000000003CF
Speed: Up to 480 Mb/sec
Manufacturer: USB2.0
Location ID: 0x24100000
Current Available (mA): 500
Current Required (mA): 100"
Anybody have any idea what is the cause of my problems with the flash Drive and how I can get the drive to mount? I don't think the problem is a function of my Apple hardware, as my USB ports on all my machines function with everything else USB which I have without problems. Thanks.

I know that, but I have USB in my older Macs, too, and besides, some of the most knowledgeable people are in these older forums!!
I've come to the conclusion that the drive may be defective, too, but I was just looking for some possible angle which I'd not already considered. I tried reformatting, but without the drive even being recognized, it isn't even possible to reformat. I can only get ASP to indicate that it is attached.
Thanks for your try!

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

Usb flash drive not mounting when inserted (SOLVED)

Hi,
I am (now) using fvwm-crystal with rox as my file manager and when i insert a usb flash drive in to a usb port nothing happens. I check /media and nothing is there. Yes i do have hal started at boot.
I reinstalled arch with xfce4.
Last edited by theringmaster (2007-10-09 20:28:42)

Well, there are the on-line manual pages:
man ivman
man IvmConfigActions.xml
man IvmConfigBase.xml
man IvmConfigConditions.xml
man IvmConfigProperties.xml
And there are examples in the default files (/etc/ivman/) provided with Ivman.
But that you probably already know. I'm not familiar with any other docs, except maybe tutorials on the net if you count them as docs

Finder stall after wake from sleep w/USB flash drive mounted

Has anyone else experienced this? iMac works flawlessly while USB flash drive is mounted UNTIL iMac sleeps. Then as soon as the iMac wakes from sleep the finder is non-responsive (perpetually spinning beach ball) and other apps slow to a crawl and become non-responsive as well if they need the finder (i.e. to save, etc.). This only happens when the USB flash drive is mounted.
Trying to force quit (relaunch) the Finder does not work, I always have to perform a hard restart.
I have an external FireWire hard drive that works beautifully and does not cause these same symptoms.
Any ideas?

umm.. don't let the computer go to sleep with your jump drive connected? The mac will usually take a few seconds to get his gear together after waking up from a sleep sounds like he is having to gather additional things since the jump drive is in there. I don't have a REAL solution except don't let Mr. Mac sleep with the jump inserted....

[SOLVED]USB flash drive no longer showing up in /dev

My USB flash drives are no longer showing up in /dev. I also don't see them in /dev/disks/... either. Dmesg outputs:
[731969.826862] usb 1-1: new high-speed USB device number 5 using ehci_hcd
Any ideas on where to start?
Last edited by nadman10 (2012-09-26 22:12:22)

ls -l outputs:
Bus 001 Device 005: ID 0781:5530 SanDisk Corp. Cruzer
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0781 SanDisk Corp.
idProduct 0x5530 Cruzer
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 200mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk-Only
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Bus 002 Device 002: ID 045e:0040 Microsoft Corp. Wheel Mouse Optical
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x045e Microsoft Corp.
idProduct 0x0040 Wheel Mouse Optical
bcdDevice 3.00
iManufacturer 1
iProduct 3
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 72
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 10
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 3.05
iManufacturer 3
iProduct 2
iSerial 1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 3.05
iManufacturer 3
iProduct 2
iSerial 1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255

How do I browse & play .mp3 files from a USB flash drive using Labview 8.0?

I'm a tester & want to test USB flash drives connected to PC.
I want to browse the file system & playback the audio files, .jpeg files etc in the USB drive. I've Labview 8.0. When I searched for some examples or VIs which can detect the USB flash drive, couldn't find any. So if you could point me in the right direction, I can find a solution to my problem.
Thanks.
Solved!
Go to Solution.

You probably won't find specific examples for this. A USB flash drive is mounted by the OS and appears as a new memory storage device to all software on the PC, including LabVIEW. You can certainly write a LabVIEW program to open files on the stick and play/run them but I would create a VI that wrote files to the stick and then read them back and checked them for bit-level errors. Keep in mind that your OS might be doing parity checking under the hood which would make your test rather meaningless.
BTW, testing memory by looking at pics or listening to MP3s would be useless of course. A human can't see or hear bit-level errors in a high bandwidth data stream.
Using LabVIEW: 7.1.1, 8.5.1 & 2013

Copying files from iMac to USB flash drives

I am having problems copying files from my iMac computer to USB flash drives. Sometimes, I get the error message: "Sorry the operation could not be completed because an unexpected error occurred (Error Code -50)."
How can I solve this problem?
This error message does not happen everytime but rather occasionally. Most of the files I am trying to copy to my USB flash drives are MS Word documents. I have tried using various brands of flash drive, but I still get this error message.
I use my USB flash drives for both Mac and Windows OS computers. For my 2GB Kingston Data Traveller flash drive, I checked its product datasheet on the Kingston website, and it says that it is compatible with both Macintosh and Windows OS, and that I can use it for cross-platform PC/Mac file transfers.
I also checked the Properties tab for this flash drive, and the File System for the drive is listed as "FAT."

Hello Stedman:
I am pretty sure that these files were not open in MS Word when I tried to copy them.
I only get this error message/code for a handful of MS Word documents; the rest of my MS Word documents were copied successfully to my USB flash drive.

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USB flash drives are available in 4 and 8 gb sizes now. Is it possible to put OSX on one of these drives and boot from it?

HOWTO: Install and Boot OS X On a Flash Drive >>
-Bmer
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How to mount USB Flash Drive

Hello again Arch-Linux users,
I always search google very hard and for months (off and on) I search for how to mount a USB Flash Drive. Nothing ever work so I give up than try again months latter. I don't want to give up anymore and that is why I join this forum.
Here are some of the code I found on the net. Some of these commands will only re-mount the entire Arch-Linux running system in /mnt/usbstick.
sudo mount -o rw,noauto,async,user,umask=1000 /dev/sda1 /mnt/usbstick
... don't work it only re-mount the entire system
/dev/sda15 /mnt/usbstick vfat user,noauto,unhide 0 0
... don't work... I found nothing inside /mnt/usbstick
mount -t vfat -o rw,nosuid,nodev,quiet,shortname=mixed,uid=1001,gid=100,umask=077,iocharset=utf8 /dev/sda1 /mnt/usbstick
... don't work... here is the error i get:
mount: /dev/sda1 already mounted or /mnt/usbstick busy
mount: according to mtab, /dev/sda1 is mounted on /
It strange that most USB mount commands use the operating system partition itself- example: /dev/sda1 as the device for USB device, while others use /dev/cdrom for cd - /dev/dvd for dvd and /dev/fd0 for floppy.
Could someone post the code that will easily mount a usb device under Arch_Linux.
I'm using Arch-Linux core-64 (08-2009)
Thanks in advance
Last edited by sharris (2010-06-17 21:58:43)

Thanks fsckd,
I needed a rapid reply because I been wasting too much time not getting anything done because I needed to get pass this flash-drive thing. I can now have a secure back-up in my pocket on USB to go. Arch-Linux does it better for what I seen while just dd'ing on disk.
...lsusb
Found it
http://gd.tuwien.ac.at/linuxcommand.org … susb8.html
Thanks demian,
sdb is the location for my single hard-drive machine. I saw it before in my list above but I changed it to sda1 because I knew no better. I had no clue it represent a 2nd hard-drive for LINUX if one is not already present.
This did it for me
Thanks again

10.5.1: Unable to mount a USB flash drive.

I've seen this problem posted elsewhere, but so far I have yet to see a solution:
After upgrading my MacBook Pro to 10.5.1, it can no longer mount USB flash drives. They show up in System Profiler as well as the USB Probe tool, but do not show up in Disk Utility (and, obviously, not on the Desktop or listed in /Volumes).
I checked the drives on a co-worker's MBP, also running 10.5, and the problem persisted there. The drives mount and work fine under 10.4, as well as various flavors of Windows. When plugged into the MBPs, the status LEDs light up, so they are getting power, and mice plugged into the USB ports work fine.
So, the problem seems to be specific to mounting a USB flash drive in 10.5/10.5.1. I'm not sure if this is specific to MacBook Pros, or if the issue is the same on all 10.5 machines.
Any help would be appreciated.

I have the USB problem. When I insert my USB memory pen, it flashes then stops. The icon doesn't come up on the Desktop, but the memory shows up on the System Profiler.
My USB telephone responds in Skype, but the sound input and output don't show up in Preferences, and so the phone doesn't work.
My Vodaphone USB internet modem won't connect.
This morning, I have no sound at all.
All these problems are resolved if the computer is restarted with the external source already plugged in, but it's a big hassle and must be solvable............

Mount a USB Flash Drive

I am running a 1998 iMac with a PowerPC Processor. It has MacOS 8.5.1. I have a PNY 2 GB USB Flash Drive. How do I mount this.

The link says it won't work with G3(which is what I have).
Where does it say that? Both the 8.6 update and the USB Mass Storage Support 1.3.5 are OK for a 1998 iMac (with 8.5.1 right now). Since the USB Mass Storage Support 1.3.5 requires 8.6, install that update first.
Oh, and I forgot to mention the only means of transporting data is through a CD(which I can burn).
Yes, you can transfer files on a CD. Use a CD-R (not CD-RW).
If you are using a PC for the downloads, make sure that the files are kept unaltered. Do not try to decode the MacBinary (.bin) on the PC. Once on the iMac, use an appropriate version of StuffIt Expander (which, hopefully, is there already) for the decoding (drag the .bin file onto the StuffIt Expander program icon). Otherwise, special software (such as TransMac) will be needed on the PC in order to correctly handle Mac files.
The iMac is not connected to the internet.
If necessary, that can be resolved within minutes. The iMac has a built-in modem for a dial-up connection, or it can be connected to a broadband router by means of an RJ-45 Ethernet cable.
Jan

USB Flash Drive Powered but Not Mounting

I have two USB flash drives that refuse to mount on my 13" MacBook Pro running 10.6.7.
The flash drive powers on, and blinks a bit.
The drive shows up in Disk Utility but the volumes are listed generically (like disk1s2) rather than having their proper volume name.
Clicking the mount button with a colume selected appears ineffective.
Trying to eject the drive results in:
The disk “Kingston DataTraveler 200 Media” could not be unmounted.
Ideas
Pulling the drive out without ejecting crashes Disk Utility. The Disk Utility Log doesn't say anything helpful.
I have two drives I've tried, opne the Kingston above which has two HFS+J volumes and another one formatted FAT32. Both drives work great on a different MacBook. I don't have other drives on hand to test at the moment.
I have MacFUSE and NTFS-3G and Parallels 6, installed, I haven't tried disabling them yet. Anyone else experiencing similar issues? Figured it out yet? Ideas?

Just so you don't think you're alone, I've been having the same problem, but with firewire devices. I'm searching around to see if there's a solution. I re-ran the 10.4.3 combo updater and it seemed to "fix" things for a while, but now the problem is back. I was in the middle of a copy from a FW CD-drive and it just disconnected. Then the iMac disconnected a hard drive attached to the other FW port. So it's happening on both ports, even when the computer is actively engaged in something.
I'm going to run the updater again. Then I might try downgrading to 10.4.2.

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

Mount a USB flash drive from a shell

I am about six months new to Linux; I have installed my first arch system but not yet installed a desktop environment. I am trying to mount a USB flash drive from the shell but I am not having much luck. I have tried following the instructions in the archwiki, http://wiki.archlinux.org/index.php/USB_Storage_Devices. I am having a problem with the following command:
mount -t vfat /dev/sda1 /mnt/usbstick
I get an error message saying that the mount point does not exist. I have in the /mnt directory the following:
cd cdrom dvd fd0 f1
(I am not sure what fd0 and fl are, if somebody could please tell me I would appreciate it. Also I do not have a DVD-ROM on my computer is the dvd listed by default or do I have a package installed I do not need?) I did some searching online and came across the following site, http://linuxcommando.blogspot.com/2007/ … -from.html. I followed the instructions to identify the correct partition name corresponding to the USB drive by running the following command:
grep SCSI /var/log/messages.log
and I get the following results:
Dec 30 22:16:17 morgan-desktop scsi2 : SCSI emulation for USB Mass Storage divices
Dec 30 22:16:22 morgan-desktop sd 2:0:0:0: [sdb] Attached SCSI removable disk
The next steps in the instructions are to mount the partition to the existing mount point (directory) by using the following command.
mkdir -p /mnt/myusb
mount -t vfat -o rw,users /dev/sda1 /mnt/myusb
This is where I am having a problem, I do not understand the results and how to proceed to the next step, please help me.
One other small question what is the best command to shut down the computer as a normal user?
Thank you
Morgan Smith

Ok, Lots of different advice here, let's see if I can explain it all together, and clear up a few bits...
I'll try to explain why I'm saying what I am, it doesn't matter if you don't follow it all, commands are below.
You are on the right lines here, but a few things missing. Firstly, to mount the USB stick you are using the correct command, but the locations are a problem. The command is "mount -t type what/to/mount where/to/mount". You can find out more about the mount command with "mount --help" or "man mount"
You have correctly identified type as vfat - this means the pen is formated as FAT.
To find out what to mount, you can check /var/log/messages.log, the second command you posted searches trough that file and prints out lines including the phrase SCSI, and the result tells you that a usb storage device had been attached as sdb, so the correct device is /dev/sdb1. Storage devices are named sda sdb sdc etc in the order they are attached, and the numbers refer to the partitions on the disk.
You can mount it anywhere you want, as any existing directory, but the one you tried to use /mnt/usbstick doesn't exist, so create it, using mkdir.
The commands you need therefore are:
mkdir /mnt/usbstick
mount -t vfat /dev/sdb1 /mnt/usbstick
This will work as root. There is also, as byte said, a program called pmount (which you can get with pacman -S pmount) which works the same way for a standard user.
Finally, there are also a number of tools like HAL which can be used to automate the process.
As for shutting down, as has been said you must be root or in the power group, then you can use 'halt' 'poweroff' 'reboot' or 'shutdown'. All have slightly different effects, and poweroff is probably the easiest.
Hope this helps
Jack

None of my usb flash drives are mounting

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