Windows 7 Cannot Read Usb Flash Drives
Dec 9, 2011
I have a problem with my PC. It is simply can't read lot of USB drive. I need to restart in order to be able to read it. Sometimes it is working or else it is still fail to read.I don't know what is the problem but I get this Inaccessible Function error. And when I checked at Disk Management, the file format of the USB flash drive shown as RAW.I have Ubuntu on my PC (dual boot). And it is just working. Therefore for some reason, my Windows 7 is stupid enough to detect my USB file system.
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Sep 17, 2012
change it to read and write mode, and also to remove write procted in it.
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Jul 21, 2011
I've got three different (but identical, to look at them) MicroSDHC thumb drives. When I tried them in my new Win 7 PC, it assigned a different drive letter and description to each, under Devices with Removable Storage. Even though "Hide empty drives in the computer folder" is checked in my Folder Options, it's not working -- they're still listed under Computer, grayed out. Worse, when I fire up Windows Explorer, it occasionally (but not consistently) gives me a series of errors about the drives not being available -- and this continues to happen even after I uninstall them in Device Manager.
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Jul 16, 2012
My netbook that uses windows 7 starter cannot detect any of the flash drives and has display troubles cause everytime restart its display will be in windows classic. Should I take it to be repaired??
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May 4, 2011
I have this Toshiba 640Gb HDD. I partitioned it into three logical drives. When I inserted the hdd in my xp, one drive cannot be read. Later when I used again the hdd in 7, it says that one of the drives needs to be formatted (the one that can't be read by xp). I did so but I noticed that the drive letter changed. Series of switching between the two OS, the drive's letter continues to change upon formatting. Then to arrange again the drive letters in their alpha list, I used Easeus Partition Master to change the letters of the partitions back as F, G, and H. After the process, when I inserted the hdd, it took significant amount of time for the drive to be read.
Is there any way to revert and restore the drive letters of the system? I've tried to restore from backup but to no avail.
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Aug 8, 2011
If I plug my flash drive into my PC using Windows XP, it works fine.No problems.But when I plug it into my laptop, using Windows 7 it will not load it.It says newhardware detected, installing new hardware, Hardware installation failed.If I go Device Manager, It is listed under Unknown Devices.I have tried to uninstall all the USB Root Hubs, Restart the computer, in-order for it to auto re-install with the USB in / out of the computer. But it still fails.
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Sep 1, 2009
Win 64Bit Keeps making my drives Disk (Volume) attributes "read-only". I can Unlock the drives by using the command prompt and using diskpart to clear the attributes on each drive and volume, but this is tedious, and I have to do it almost every day. What is causing this and what can I do?
I have a feeling it may be related to another problem I have. I tried to change my homegroup settings but closed down my PC before it had finished making the changes. Now, when I try to change the homegroup settings all I see is a notice saying that it is still sharing my Libraries, or something similar. This message is permanent, and I can make no changes. What can I do about this issue please?
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Aug 26, 2010
my Acer Aspire One which has Windows 7 Starter, will not read my USB flash drive. I have even bought a new flash drive to see if it would recognize the new one. It hasn't. How can I get my computer to recognize the flash drive?
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Jan 18, 2012
How do I change a flash drive from read-only so I can format it?
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Sep 30, 2012
How do I change a flash drive from read-only so I can format it?
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Jan 26, 2013
How to format read only usb flash drive
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Mar 24, 2011
All of my Removable Storage Devices (Flash drives, External HDD) do not work with my Windows 7. When I connect them, I hear the beeps but the device sometimes show up, sometimes not and sometimes they appear after a long interval. On accessing them, Windows tell me that I need to format the drive. Well, I can't do that. It's happening with all of my removable devices, not just one. They work fine with my laptop which is Windows 7 too,
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Mar 11, 2012
Windows 7 HP has suddenly started to create headers for the alphabetical groups it has started to organize the contents of my flash drives into. Here is an example: The headers were not there last week, they have not been there since the system was built a year ago, they are not on the drives themselves and they do not appear when the flash drives are plugged into my XP system. I have made no changes that would account for the appearance of these headers during the past week or so.
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Mar 9, 2011
i turned on bitlocker on my a-data flash memory and after a couple of days turned it off but after that the flash is read only and im unable to format it or delete anything and i cant even turn the bitlocker on again on it
i used 3 different pc's with win 7
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May 11, 2012
how can i format a protected usb flash drive
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May 11, 2012
how can i format a protected usb flash drive
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Aug 5, 2012
I purchased a Toshiba Lap Top from a lady. She said that she had the system completely restored....she sure did. I have no internal sound and my pen drives will not work in any of the USB ports. What do I have to do to get them to work? I have all of my work on these pen drives.
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May 8, 2012
in 7 doesn't see any USB flash drives. Check in disk management - not showing up there either.AND........If I switch HDDs & revert to XP - same thing. No usb flash drives appear. And in control panel > disk management they do not appear as unassigned also.
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May 24, 2012
i mounted my windows 7 iso with daemon, opened my cmd/disk part window and cleaned, partitioned, formated, and assigned the drive letter and then xcopied my mount to the flash drive, but it wont show up during boot up. i've done this a million times and its worked with this computer. im using the poopy mobo out of the a6430f hp computer. its an asus mobo.
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Jan 16, 2012
2 of my usb flash drives are not recognised while 2 are, and I have just been given a new one.When I plugged it in the computer said it was loading drivers and then that it was ready for use.It shows up in device manager but I cannot access it from 'my computer'.The same applies to 2 of my 4 drives.
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Aug 6, 2012
When I put the flash drive into any of the USB drive on the computer I get a message come up firstly asking me to format the flash drive. I even get this message come up when I plug my TomTom satnav in via USB.If I click on the drive designation I get the following message: {{ K:drive is not accessible. The volume does not contain a recognized file system. Make sure that all required file system drives are loaded and that the volume is not corrupted.}} I know that the memory sticks are OK as I have tried several and also tried all the USB slots on the computer and in another computer. I cannot remember having done anything to have caused the problem since last using the USP drives.
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Feb 21, 2009
It is difficult to remove multiple flash drives using the safely remove hardware dialog. I had three flash drives plugged into a USB hub, and I wanted to remove all three at once. I click on the remove hardware icon in the notification area, but it only allows me to select one drive at a time.
When I click on a drive to remove, the dialog disappears and another window opens to let me know that the drive can be removed.
I have to repeat this process for the other two drives. Worse still, the remove hardware icon changes position when the safe to remove dialog appears.
Ideally, when multiple removable devices are installed, the remove hardware dialog should remain visible after selecting a device to remove. That would allow the user to select additional devices to remove if so desired.
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Feb 26, 2012
I have win 7 home premium on one tower and win 7 pro. on another. My question is can I save a system iso of each one on usb flash drives in case of a crash? My home premium c:/ drive shows 445gb. free from 465gb. so would I have to use at least a 20gb. flash drive. I know New Egg has a large selection of flash drives. I have a second hd in my pro system I used to save a complete iso backup on it.
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Mar 16, 2012
I install a flash drive, opens automatically, when I close programs and click remove I get a window item is still in use. Close all programs and click safe to remove. I am not real literate on computers but I don't know where to go to even find if there is anything left open in the flash drive. I keep going back ti remove safely and same window comes back.. How big a risk if I just remove it?
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Jan 6, 2010
I have tried multiple fixes and still cannot connect any flash drive or external drive to any usb port on my computer without the dreaded "Usb not recognized" error. My mouse and keyboard are both usb and have worked fine though. I have unplugged the power cord from my psu for a few minutes. I have booted into safe mode. I have deleted the infcache.1 file. I have check my Bios settings (and have latest bios update). I have completely removed all the usb devices in device manager and rebooted which reinstalled everything. I have booted the computer up with a flash drive already in a usb port. I have gone into Drive Manager to see if anything is recognized without a drive letter. I have even applied the hotfix from here - [URL]. Nothing seems to work, yet all of these devices work fine on my netbook running Windows XP.
When I originally installed Windows 7 everything was working fine. I would say it roughly stopped working a month or two ago. I don't constantly use flash drives or my externals so I could be a little off on the time frame (why I didn't do a system restore). I first noticed the problem when I plugged in my Tmobile G1 phone to transfer files and it wasn't recognized. My phone would still charge off of the usb port, but I couldn't mount and browse the 4 gig sd card in my phone. It was working before because I have files on my phone that I transferred from my computer after the Windows 7 install. I started testing out my known, working flash drives as well as my usb powered 2.5" external drive and they too come up unrecognized on all usb ports (front and back).
My specs:
AMD X2 5000+ BE
Gigabyte GA-M55plus-S3G mobo
G.Skill PI Black 4GB ram (2x2 - DDR2 800)
2 Western Digital Sata drives
Nvidia 9800 GTX+ video card
450 Watt PSU (don't remember brand right now, but good amp rating on 12v for video card).
Windows 7 Ultimate x64
The only drivers I am using for the system that are not the default Windows 7 drivers are for my video card and onboard audio. Onboard audio is the only Windows 7 driver provided on the Gigabyte website for my motherboard. What shoild I do, check or double check or should I start considering formatting and a reinstall of Windows 7 (which I have been trying to avoid)?
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May 25, 2012
I've got new computer with Windows 7 & for some reason or other cannot access two Sandisk flash drives (Cruzer Blades) yet no problems with other makes!
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Nov 1, 2012
So recently my desktop PC has been freezing at random times, and then sometimes restarting after not responding for a couple of minutes (no BSOD, just restarts as far as I've seen). It sometime freezes as soon as I turn the computer on, while Windows is loading, and sometimes it will start freezing after an hour it's been on. Most of the time it will just freeze for around a minute, and then unfreeze, but sometimes it does freeze and then restart. By freeze I mean everything, mouse included, and ctrl+alt+delete doesn't work.Also at bootup sometimes, it will fail to detect my SATA hard-drive and hang at Detecting SATA drives at the bios screen. This will be following by a disk read error.This problem started occuring a couple of weeks a go, so I reinstalled Windows 7 and it worked fine after that.
Running Windows 7
Bios: Phoenix - AwardBios v6.00PG
Processor: Intel Core2 Duo CPU E6550 @2.33GHz
2GB RAM
Graphics Card: Nvidia GeForce 8600 GS
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Apr 20, 2009
I have a couple of flash drives I have formatted to NTFS. One for an install drive and one for a readyboost test. If I formatted the drive in CMD do I have to format it the other way (to FAT32) in CMD or can I just right click the flash drive and format it there?
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Jun 8, 2011
I got a new motherboard yesterday, installed it, and installed windows. This morning, I decided it would be a good idea to flash the UEFI (BIOS) to the newest version. Now, when I try to boot, it just sits with a gray cursor at the top left of the screen. I went into the UEFI and went to boot order, but it only shows my 1TB hard drive and my dvd drive. But I had a 750GB hard drive with windows installed. I think this is the reason it won't boot, because it doesn't see the drive with the OS installed.
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May 28, 2012
I have just recently acquired a flash-drive and have been curious as to how to encrypt some files on it. The key word being some.It's a large drive (8GB), and will be used for many different things. I want an area on the drive to be used to transport/hold personal documents which I wish to have encrypted.I have tried software like TrueCrypt which decided to use the whole drive, and didn't seem to work properly anyway (?)I want something that acts like a 'safe', I double click it, I enter a password, I access the files.I need the software to run strictly from the stick, without the need for Admin' Privileges and for it to work on most operating systems (2000 and newer)... I understand I could use old fashioned password protected/encrypted .zip's.... but I don't know if Windows can natively read these without the need of say 7zip or WinZip.
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Mar 31, 2012
When attaching a flash drive:
1. The autoplay pop up doesn't appear;
2. The device does light up initially;
3. The device doesn't show up in "Computer"
4. The device doesn't show up in Disk Management - just Disk 0 (system reserved, C: and I and 0 (CD ROM)
5. The device appears in Device Manager under USB controllers as a storage device but I can't access it.
6. This happens with all memory sticks and occasionally with ipod etc.. but sometimes for no apparent reason they work! All devices works ok with other computers.
7. 9 times out of 10 plugging in a device or turning on the USB attached printer will cause the computer to BSOD, usually with IRQL NOT LESS OR EQUAL 0X0000000A
8. Devices are never allocated a drive letter.
The only thing I can think of is that I repartitioned the external hard drive (which I attach to back up) which may have confused the computer with driver numbers? Possibly?! And I did fiddle with the System Reserved drive as I had back up issues and one of the solutions was to rename it, then I renamed it back again (I think).I'm running Windows 7 Home 64-bit, Avira anti virus and the computer is about 6 months old, working ok until a month ago. Can't think that we downloaded anything about the same time as the problem started but possible. I've tried to update all drivers that I can think of but the only one that needed doing was the Nvidia GeForce 7025 which was outdated.
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