Usb flash drive not working in iMac

PNY 128gb flash drive is not working in my iMac when I tried to copy.

Did you partition and format it?
Drive Partition and Format
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Apply button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.

Similar Messages

USB Flash Drive not working

I have purchased a USB FLASH DRIVE v112b 16GB on 26.12.13 from HP
dealer in Agartala. after using 2 months I'm facing problems with it.
Suddenly an error is showing " you need to format the disk before you
use it but format is not possible as another error showing format not
possible. what should i do now with it?
Please solve my issues asap.
Neal

Hi Neal2014,
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers. For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I understand that you recently purchased a HP USB drive. You are now getting a message to format it, but are unable to. Have you tried to format it on a different computer?
If you are unable to format the drive, I suggest you call HP support, as I believe it will still be in warranty.
Please call HP technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region. HP Technical Support Sitemap
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!

Usb HP v250w USB Flash Drive not working

My name is goutam kundu and my new bought usb HP v250w USB Flash Drive is not working and not formatting also.Please provide me some information or to send the service center.

I have the same problem too. (USB was working on windows XP but no longer does but windows 7 is fine. ) I logged a request on the HP website and got an email from [email protected]
they suggested I try (as below)
Please try to use our repair tools (Uifx-I or Uifx-II) that maybe could solve the problem.
The URL: http://www.pny.com.tw/index.php?cls=2&mode=download
If you still can’t working of the USB .
Then will to provide further solutions, thanks.
I eamiled {Personal Information Removed} back with
I"ve used your appicaitona dn it was successful on my windows 7 machine
I've then put the USB into my winxp machine (which I had it working in previously)
and it is not recognised
but it does come up in the computer management section as below
And that was a month ago and I haven't heard from them since. I then emaield them and have had no response. but looking around the internet a lot of complaints exist regarding the v250w.

USB Flash drive not working after upgrade.

Its a SanDisk 8GB USB memory stick with the U3 filesystem on it. It works fine on Windows machines and on 10.5, but won't show up as a useable volume in Finder when inserted into my MBP.
Oddly enough, it does show up when I run Parallels - but only in the windows VM. It also shows in Parallels in the list of attached USB devices.
It just won't mount as a volume.
Any ideas?

Hi,
copy anything on your drive to your desktop in parallels then reformat the drive.
There's a good article Here on how to format a drive for Mac and Windows.
Regards

USB Flash drive not showing on DT

Hi folks,
I received a USB flash drive with 2 GB capacity made by Super Talent (www.supertalent.com- look under Aluminum flash drives).
Upon plugging it into the G5's USB port (i've tried them all) I get a "Cannot recognize- Initialize/Ignore/Eject" message. Clicking Initialize brings up Disk Utility which sees the drive with a capacity of..wait for it..2 Terabytes! Here's DU's info:
Name : SKYMEDI USB Drive Media
Type : Disk
Disk Identifier : disk1
Media Name : SKYMEDI USB Drive Media
Media Type : Generic
Connection Bus : USB
Connection Type : External
USB Serial Number : 03
Writable : Yes
Ejectable : Yes
Mac OS 9 Drivers Installed : No
Location : External
Total Capacity : 2.0 TB (2,199,023,255,552 Bytes)
S.M.A.R.T. Status : Not Supported
Disk Number : 1
Partition Number : 0
Selecting HFS+ (journaled or not) or MS-DOS then clicking Erase gives me a spinning beach ball requiring me to Force Quit DU.
My config: G5 DP 2.0, 1 GB ram, 10.4.6
Any thoughts?
G5B DP2.0 & iBook366SE Mac OS X (10.4.6) Alu 20-in Display

hey there scan,
I gave the drive to a friend who has an iMac. Samething occurs: drive does not mount, DU erroneously reports 2 TB capacity and coughs up the beachball seconds after clicking on Erase to format it. He's on 10.3.9 while I'm on 10.4.6.
All the ports on my G5 are in working order as i use printer/scanner and iPod w/o problem.
Think the drive is going back.
Frank

USB Flash Drive not detected after OS X Mountain Lion installed.

My MacBook Air 11 inch (Mid 2011) suddenly stopped detecting all my USB flash drives a week after upgraded to Mountain Lion.
I have a tiny 16GB USB flash drive (Sandisk Cruzer Fit), for daily work, that has never been unplugged from my MBA.
Everything was fine on Lion, and a week of Mountain Lion, until just when my MBA prompted me that my flash drive "was not ejected properly" after I re-opened the display/lid, or from sleep mode.
I thought I might have accidentally removed the flash drive unknowingly. So I tried re-plugging the flash drive, closed and re-opened the MBA lid, and the same error message "The disk was not ejected properly" occured. I repeated the steps for a few times (thinking my flash drive might be faulty) and at my last attempt, the flash drive was stopped detected. I tried several USB flash drives and external hard drives (of various brands) to both the USB ports of my MBA, only the external hard drives were detected (on both USB ports) and functioning. None of the flash drives was detected on either USB port.
The tested flash drives were plugged to another 13" MacBook (Unibody, Late 2008, OS X Lion) and they all worked fine.
I wonder if anyone faces the same problem, and solution(s) please?
Additional: OS X Mountain Lion re-installed and same problem occurs / No problem with OS X Lion.

I had the same issue after installing Mountain Lion from the App store. The issue is you are missing the IOUSBFamily.kext extension amongst others. The solution is to backup your macbook, then perform a clean install of Mountain Lion.
I had this done at the Apple Store and now everything is restored as well as performance speed being improved.
Note: When restoring your files (a clean install will delete all your files and applications), use the Migration Assistant.
I would recommend going to the Apple Store to do this because they can perform the clean install from a USB which is so much faster than the download form the App store.
Hope this helps.

USB Flash Drive not readable using 10.4.6 but is with 10.3.9

I noticed that a 32MB USB Flash Drive that used to work on my Powerbook when it was running 10.3.9 became unreadable when I upgraded to 10.4.6. This flash drive still works on my Dell WinXP system and I just tried booting the powerbook off a clone of my 10.3.9 setup (on an external firewire drive) and my flash drive works on that. So it appears to me that 10.4 has introduced a software bug that has disabled support for some flash drives. I will note that I also use a USB compact flash reader for transfering digital pictures and that does work under 10.4.6 so the problem does not affect all USB flash devices.
Is Apple aware of this? Are they working on it?
PB 1.5 GHz G4 15 Mac OS X (10.4.5)

Have you tried to open it in disk utility? Probably won't, but worth a shot. If not and you don't know who made it, then I'd say your out of luck. Probably time for a new Flash drive.
A 32meg Flash Drive today is very cheap if you can find one. You can get a 250 meg Flash drive for $20-$30. That's 8 times the storage you have now.

Z87 gd65 - usb flash drive dont work but keyboard work

HI How are you
I have a msi gd65 z87 with i5 4690k
the problem
usb do not work with flash drive and wifi dongle
It work with keyboard and mouse
I have energy in the usb because my smartphone get charged but it will not be connected in the windows.
The usb flash drive do not boot. I tried all ports and different flash drive.
My only way to flash a bios is in windows ( maybe using a cd or hard drie too boot in dos, I will try later)
My ideia is to downgrade from 1.B to 1.A
Because in the site of MSI says that my processor is compatible with the bios 1.a
I am here because to find a solution, my last option before send back this motherboard
tks for the help

Download abd Install Intel USB 3.0 drivers.
http://www.msi.com/support/mb/Z87-GD65-GAMING.html#down-driver&Win7 32

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

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 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

HT2801 USB Super drive not working

I have removed the optical drive from my 2008 (late) macbook and added an SSD to run along side the HDD and increased the RAM. I have a super drive to read CD/DVD's but i can not get this to operate?

I believe that the Apple USB Super Drive only works with late model Macs that didn't come with an optical drive. Third party usb drives will work ok though.

USB Flash Drive not geting detected

I brought HP x705w 16GB USB Flash Drive in the month of October 2014. It is not getting detected in any computers i tried. I tried from DEVICE MANAGER but same problem NOT GETTING DETECTED. It is under warranty period.I visited HP care service near me (Aurangabad) but they are not helping me. Please give some help regarding this problem.

I had the same issue after installing Mountain Lion from the App store. The issue is you are missing the IOUSBFamily.kext extension amongst others. The solution is to backup your macbook, then perform a clean install of Mountain Lion.
I had this done at the Apple Store and now everything is restored as well as performance speed being improved.
Note: When restoring your files (a clean install will delete all your files and applications), use the Migration Assistant.
I would recommend going to the Apple Store to do this because they can perform the clean install from a USB which is so much faster than the download form the App store.
Hope this helps.

External drive not working on iMac, but works on Macbook Pro

I have read a few different threads relating to this question, with no real luck of a permanent solution.
I have an external drive that works perfectly on my Macbook Pro. My new iMac will not show the drive though (both with the current software).
The drive itself shows a power light and appears to be running/powered by the USB port.
I have tried several ports.
It does not show in Disk Utility.
The option in settings is set to show the drive in finder and on the desktop (I have checked this).
I have tried restarting the iMac.
I have also had this problem after the iMac has been turned off overnight, and turned on in the morning (and then plugging the drive in after powering on).
I resolved this issue once by turning off the iMac, removing the power cord for a few minutes, and powering it up again.
I don't think it should be something I have to do every time I would like to use the drive though - It would be very irritating if I had to do that every time.
Any advice or options here?
The iMac has only been used since Christmas day, 2014 - and has had this problem since that day (in which i solved it by the turn off/unplug thing).
Sorry, I am aware this question has been asked a lot. I haven't come across anything that is giving me a long-term solution to this problem.
Happy new year!

Some USB-powered drives are just crappy. They require too much current from the USB and cause the bus to fail or the bus can't provide enough power for it to fully spin up. You can often hear or feel them clicking periodically (like once a second) as they are trying to spin up.
If this is the case, a powered Hub, external power supply, or Y-cable will be necessary to consistently use the drive.

USB thumb drive not working

I borrowed a friend's USB thumb/flash drive that had been used on a Windows PC to store important data. I downloaded some applications (Mac upgrades) onto the drive using a PC, and then successfully loaded them onto my G5. I safetly removed the thumb drive and now it doesn't work in either a PC or my Mac. Can anyone help retrieve this data using a PC or Mac? I'm sure it's a formatting issue but can't understand why my Mac no longer reads it.
On the Mac, if plugged into the keyboard, it gives the warning that it's drawing too much power. If I plug it into the back of the Mac, nothing shows on the desktop, even after a long period of time. The PC gives an oddball error - it's not recognizing the format.

Use a prepaid iTunes card if you haven't got a card

Usb flash drive not working in iMac

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