Flash Drive Not Mounting

I just got a Swiss Memory swissbit flash drive that I attempted to completely erase and format in Disk Utility. I formatted as Mac OS X Standard and now my drive does not mount when I plug it in. The light on my flash drive blinks but I get no icon on the desktop or within the finder window. Disk Utility does not recognize it either for me to reformat and try again. Any suggestions?

I believe that could have happened. The drive
disappeared from the desktop after I selected "Erase"
in Disk Utility so I just removed it from the USB
port, as there was no way to eject it. Rebooting
gets me no where. However, the drive does show up
under USB in System Profiler as "Flash Disk".
Disk Utility will dismount a drive before it begins to format it. ( If it is mounted on the desktop, it is considered "in use" )
Once the format is complete, DU remounts the drive.
Of course, when dismounted, it will disappear. If you removed the device as soon as it went away, then the format process never completed, which would explain why it doesn't show up now.
Might want to check w/ the manufacturer to see if they have a reformatter utility for the drive.

Similar Messages

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!

Flash Drive not mounting, shows up in sys. prof. and USB Prober

I have a 4Gig Flash Drive that doesn't mount. It shows up in both SYstem Profiler and USB Prober. Is there any way to "fix" it? I don't need to recover any files - I just want to be able to use it.
It used to work, maybe a year ago. Havn't touched it since.
The port is just fine, it's definitely the drive.
Thanks for your time!

it doesn't show up in disk utility. unless there is a way to force mount it, disk utility can't help.

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

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

Flash Drive not supported

Hello everyone,
I purchased a SanDisk Cruzer Micro 1.0 GB flash drive not too long ago and it was working fine. Removed some software that was on it because I couldn't use it.
Used my flash drive today and I receive this error, but still kinda works...
"The disc could not be used because the disc drive is not supported. (Error code 0x80020025)"
The flash drive also does not eject the flash drive correctly. The little light that is on the flash drive does not turn off when I press the eject button in the OS hard drive icon.
I've tried reformating the flash drive and tried downloading the driver on the sandisk website, but it is for the Windows 98SE Operating System and does nothing for my iBook G4.
Any suggestion would be much appreciated.
Thanks,
Stephanie
iBook G4 Mac OS X (10.3.4)

Someone on another forum had a similar issue. Basically, you need to connect it to a Windows machine and uninstall the U3 software from it.
The error message you get indicates that the computer is trying to access the flash drive as if it was a CD writer.
(13744)

10.6 to upgrade 10.8 my promise vess drive not mount again

when i upgrade 10.6 to 10.8 my promise vess drive not mount again.

If you are using Safari, try a different browser such as Mozilla Firefox Web Browser or Google Chrome

10.4.7 & FireWire drives not mounting

Hi everyone,
since this morning my trusted LaCie FW HDs won't mount, are not seen in System Profiler and Disk Utility.
I tried almost every thing I could find, resetting vram, pram, powering everything down, waiting, disconnecting all the cables, powering back up, connecting one after another, etc. - no changes.
Every application runs fine. Except, of course, Logic because I have all my sounds and song projects on these drives.
My system.log continues to say every second again:
...-Computer kernel[0]: AppleFWOHCI_AsyncTransmit::waitForDMA - context not going inactive.
The console.log repeats:
-Computer root[175]: [MAFL] attempt to make FSSpec for "121-210.cypress" failed -120\n
-Computer root[175]: [MAFL] attempt to make FSSpec for "210.cypress" failed -120\n
-Computer root[175]: [MAFL] found no firmware to load for 210\n
Does anybody know what these logs mean?
Is anybody else having this problem with 10.4.7?
I started a similar thread on A-S-D- Installation and Setup, only to find out, that a lot of people there are experiencing the same issue (FW drives not mounting, not showing).
Would resetting the PMU help?
Please help, I can't work

Back from the mysterious world of HDs, so easy to solve..., sometimes...
I tried the HDs on my friends older PB and all was fine.
Resetting my computers PMU did not solve the problem, after I tried everything else.
I refrained from reinstalling 10.4.7.
All other applications (but Logic, because I could not access my files) were running smooth.
Going back to 10 a.m. yesterday, basically starting over, there was one thing I missed checking (being human): the AC to DC converters supplied by LaCie for their drives.
See, they are under my desk, like out of sight...
Voilá! Individual testing revealed, that the AC/DC converter for the first LaCie drive in my chain did not spin up any of my other six LaCie drives, which I never run all at the same time, but they still have their own power supply.
Changed power supply on the first HD and now I am back to the fast speed and glitch free system I love. Back to enjoying work as well
What a day. And I am very sorry, that I was implying to blame 10.4.7 for this. My PB has never been faster

Usb optical drive not mounting

Usb Optical Drive not mounting via MacBook Pro (13inch 2013) since update to 10.10.1. Any positive solutions?

Hello MicroTuFF,
If you cannot get your USB SuperDrive to not mount disks, then take a look at the troubleshooting in the articles below. Start at the Doesn't accept discs section for your specific issue.
Get help with the slot-loading SuperDrive on your Mac computer
http://support.apple.com/en-us/HT201788
Regards,
-Norm G.

SOLUTION - USB 3.0 External Drives Not Mounting on MBP Retinas - SOLUTION

So I have been having the same problem as everyone else who has issues with USB 3 external hard drives not mounting on their MBP Retinas. My friend told me to try unplugging the USB cord and plugging it back in instantly (like in half a second, so as to not let the power turn off on the drive). I had my doubts but then I tried it just now, and MY DRIVE MOUNTED.
GO TRY IT AND SEE IF IT WORKS FOR YOU!
UPDATE: I am using a powered external drive (Seagate Backup Pro 3TB). Not sure if this will work with bus powered drives, but I think it might, as my friend might have been using a bus powered drive.
Also, I just bought two Hitachi TOURO 750GB bus powered portable drives (7200rpm/USB 3.0) and they mounted perfectly without problem as soon as I plugged it in for the first time.

Roderick A. Santiano wrote:
So I have been having the same problem as everyone else who has issues with USB 3 external hard drives not mounting on their MBP Retinas. My friend told me to try unplugging the USB cord and plugging it back in instantly (like in half a second, so as to not let the power turn off on the drive)...
Did you unplug the USB cable from the computer or from the external drive? This fix has been posted here previously but it was reported that the cable had to be unplugged from the device, not the computer. If the cable was unplugged from the computer instead, the fix didn't work.

USB thumb drive not mounting... hardware or software problem?

I have two systems I'm working with. The first is a MacBook, running 10.5.6 (also Parallels 4 for WinXP). I have no problems here.
The problematic system is a MacPro, running 10.5.6 (and Parallels 4 for WinXP).
Symptoms:
All USB ports function (sort of). I can plug my keyboard in to any port and they work. If I plug a thumb drive in (to any port), it periodically flashes, but never mounts, nor is it visible in Disk Utility or System Profiler.
If I start Parallels with the thumb drive inserted. It asks me what I want to do with the device, and I can tell it to mount on the mac, and it does. If Parallels is already started, then I insert the thumb drive, nothing (Mac OS or Parallels) notices it was inserted.
If I boot Windows directly, then insert the thumb drive, it tells me the port is not a high-speed port, but will still mount the device.
Finally, again, I have no problems with this thumb drive on my MacBook.

Roger
This may be sorted out in the Preferences for Parallel. In the configuration editor>usb option>connection options.
With parallels running does it see the usb in the menu under devices when you plug it in?

USB flash drive not recognized by Macbook Leopard 15.1

Hi
Until last week my macbook was able to recognize my USB flash drives and my IPOD in Itunes and also as an independant drive.
Last week it started to give trouble. It simply does not recognizes any USB flash drives I plug in as well as my IPOD music into Itunes.
This is very strange since it is recognizing the HP all in one. It scans and prints. I purchased this HP all in one last week and installed the software for it. I am not sure how this could have affected that I cannot mount any USB drives.
Can you please help? Anyone?
Thanks.
Viri

Hi
Welcome to Apple discussions
Can you see the devices if you use Utilities/Disk Utility? Maybe you need to reformat them. Take care, reformatting will lose the data on the device.
Bob

Hard Drive Not Mounting NTFS Tried MacFuse and NTFS-3G

Issue:
Mac OS X Tiger
- External HD NTFS Formatted (Win XP)
- Does not mount, but shows in Disk Utility (running on USB2.0)
Ran Disk Utility's Verify Disk:
Invalid B-tree node size
The volume needs to be repaired.
Error: The underlying task reported failure on exit
1HFS volume checked
Volume needs repair
Repair Disk:
same errors above
but under HFS volume check shows 1 volume could not be repaired because of an error
I've tried installing Macfuse and NTFS-3G and FinkCommander. I've tried running terminal commands offered on various sites.
I don't have Bootcamp.
I believe this hard drive was connected to my pc (win xp) when it may have crashed on me. I think its a recovery issue because I run a 4 bay usb hd box that probably wasnt plugged in when this happened, and those hard drives can be seen my this mac. The crashed computer's hard drive and this external hard drive are the only ones not being read. Can somebody help me? Thanks.
PS- I ran a demo of Boomerang and showed all my files on this external hard drive. It was all under the Regular tab, not the Lost tab.
I have techtool pro as well. I just got it yesterday,and I'm not sure if it's supposed to fix this stuff.
Do I need one of the recovery programs out there like Diskwarrior, DataRescue, Boomerang, etc etc?

Is it possible that your hard drive is full enough that there was not enough space on it to complete the reinstall of OS X 10.4?
You may have partial installs of the OS on the hard drive which have totally filled the drive. This is not a certainty, just a possibility, but it could explain why there is no error report on the drive.
Do you have access to another Mac with FireWire? If so, you can try to use FireWire Target Disk Mode with your iBook as the Target Disk to see if you can retrieve your data to the other Mac's hard drive.
Instructions on recovering from the flashing question mark folder can be found in this Apple Knowledge Base article:
http://docs.info.apple.com/article.html?artnum=58042

USB Hard Drive not mounting til after restart

This weekend I put a new internal hdd in my Power Mac G5, and decided to use this opportunity to go ahead and put Leopard on one of my macs.
I'm finding that it doesn't mount some my USB External Hard Drives (3.5" externaly powered cases) unless I plug them in, and then restart the computer. (It also works just starting up if the G5 is off.) The drive needs to be turned on before the start up.
This is the case with an older IDE->USB 5 inch case, a brand new sata->USB 3.5 case (with the former g5 drive inside, and a sata->usb newertech bridge on the g5 drive. A bus powered 2.5" one mounted fine without the restart. I have not tried any flash drives.
I've tried the different USB ports on the G5 with no difference. I have not tried plugging it into a hub that's pre-connected (either powered or non).
They don't show up in Disk Utility during the time they don't mount. They do after the plugged-in restart, though. They also unmount then remount fine after the plugged in-restart.
The drives work just fine on my MBP (running Tiger). They worked just fine before the Leopard upgrade. If I boot into the Tiger partition on the G5, they work just fine.
I've seen references to other people having what sounds sort of like this problem in google searches but nothing exact, and those threads seem to get sidetracked with useless comments (like "Well, you should just use Firewire!" etc).
Has anyone experience this...and moreover, anyone found a fix.

Two things to check:
The drive must be formatted in Mac OS Extended (Journaled) or FAT 32
You almost always have to use a powered USB hub with the under powered port on the Time Capsule, even if the hard drive has its own power supply
Where are you expecting the drive to "show up"?

USB flash drive not being recognized as a startup disk?

Hi everyone, I've been searching for similar questions but haven't found one that exactly matches my experience. So, I'm going to try and explain my issue in hopes that others may be able to help.
I'm trying to create a bootable flash drive from which I can install lion, and eventually Mountain Lion when it is released onto my main hard drive. My main reason for doing this is to have a way that I can perform a clean install of the operating system. Yes, I know I am old fashioned, but sometimes I prefer clean operating system installs rather than upgrading. In any case, I have downloaded the lion setup file from the Mac app store (Install Mac OS X Lion.app) and am following the directions given on this page to do this procedure. These directions are consistent with directions found on various other sources online. Having this file saved to my hard drive, I was able to find and extract the disk image file from the package InstallESD.dmg to another folder. Once extracted, I plugged in my flash drive and attempted to use disk utility to restore the disk image to my flash drive. I selected the dmg file as my source and the flash drive as the destination. I then clicked restore and was warned that all data on the flash drive would be erased while the disk image was restored to my flash drive. I was prepared for this, so I allowed the process to continue, and it appeared to proceed with no problem. When disk utility was finished, I did a quick look at my flash drive using finder and confirmed that it did in fact appear to contain a disk image of the .dmg file. Here's where things get interesting however.
When I go to system preferences and choose startup disk, my flash drive is not listed as an optional disk from which to boot, only my hard drive ("macintosh HD"). When I restart and hold down the option key, my flash drive is not listed as a startup disk either. I know that the non-intel based macs are not capable of booting from USB, but this is certainly not my issue as I have an intel macbook pro, mid 2009 model. My flash drive is about 4 or 5 years old; it is a PNY Technologies Attaché 16 gb flash drive. I have no trouble viewing and transferring files to and from the flash drive, the only issue is that my computer seems to refuse to recognize it as a startup disk. Are there certain flash drives which do not support booting? This would normally seem more like a computer issue rather than a flash drive issue, but most people seem to have no problem doing what I'm trying to do. Unfortunately I do not have another flash drive with which to test this, and I didn't really feel like buying another flash drive just to test this out if in fact this is not a flash drive issue. I am planning to upgrade to the macbook pro retina soon which of course does not have an optical drive, which is one of the reasons I would like to get this working. Can anyone think of something else I can try? Is it more likely an issue with the macbook pro or the flash drive?
Thanks in advance for any thoughts.

The format says Mac OS Extended. All of the settings were set during the disk image restore process. Even if I format the flash drive as extended journaled or some other format, all of these settings are reverted when I do the restore from the disk image. I will just copy all of the information that disk utility has so that you can see it.
Mount Point : /Volumes/Mac OS X Install ESD Capacity : 16.11 GB (16,106,110,976 Bytes) Format : Mac OS Extended Available : 12.3 GB (12,303,499,264 Bytes) Owners Enabled : Yes Used : 3.8 GB (3,802,611,712 Bytes) Number of Folders : 128 Number of Files : 876

Flash Drive Not Mounting

Similar Messages

Maybe you are looking for