External Hard Drive Disappears And Reappears On Drives List?
Sep 6, 2012
after searching for some answers on the forums, i've been moved to post a separate thread. i have an external hard drive that disappears for some seconds only to reappear again on my list of drives. my computer alerts as if the external drive were dismounting then remounting. i have run various checks and nothing is presenting as abnormal or of issue. has anybody else experience this, what effect is it having on my computer and what can be done about it
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Jan 29, 2012
Whether it's watching a movie or playing a game, it often stops and I can't see my drive in the system. After I restart the computer, it's back.
I don't know if it has anything to do with it, but it first happened while I was playing TES III: Morrowind (vanilla), when it tried to load a cutscene. I heard that earlier versions have some Safedisc protection which can mess with your system (it was 1.2 btw). I don't use that anymore, now I have Steam GOTY version, but it happens anytime
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Jan 17, 2012
my external hard disk is disappears.what should i do?
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Oct 22, 2012
System Info Utility version 1.0.0.2
OS Version: Microsoft Windows 7 Home Premium, Service Pack 1, 64 bit
Processor: Intel(R) Core(TM) i5 CPU M 450 @ 2.40GHz, Intel64 Family 6 Model 37 Stepping 5
Processor Count: 4
RAM: 3956 Mb
Graphics Card: NVIDIA GeForce 310M, 512 Mb
Hard Drives: C: Total - 102399 MB, Free - 21271 MB; D: Total - 359076 MB, Free - 167162 MB;
Motherboard: SAMSUNG ELECTRONICS CO., LTD., Q430/Q530
Antivirus: McAfee VirusScan, Disabled
My computer has been overheating and shutting down for a couple months now. The fan is running and I have recently blew out the vents not dusty at all. On or about this same time or after all this occurred whenever I try to type whether it be in this message box, email, internet address bar or MS Word the insertion point will temporarily disappear preventing me from typing until the insertion point returns anywhere from 3 seconds to 10 seconds or so. Sometimes I need to left click to return the pointer faster. I am not using a separate mouse. It took 5 mins. to type this paragraph and it is frustrating. Also I have tried in the mouse changes control panel to check or uncheck the pointer insertion point box but it doesn't make any difference one way or the other.
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Apr 16, 2011
I am using 3 external hard drives and noticed a couple of times there drive letters have changed. Maybe I have had them unplugged for some reason I cannot remember, but it causes confusion with some files that use shortcuts. I would like to know if it is possible to give the drives permanent drive letters also change there names?
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Aug 14, 2011
I use a lot of different usb hard drives in my shop. I have two basic enclosures, a generic one that uses pata drives on a usb 2.0 cable and an Apricon USB SATA 2.0 adapter.Suddenly when I plug in a new drive device manager does see the drive and installs it in device manager. I can see the drive in Disk Management but it has no drive letter assigned, and therefore doesn't show up in Computer. I can easily just assign a letter in Disk Management and the drive immediately becomes usable. However, I would like to get Windows 7 to resume automatically assigning a drive letter.
I have tried a program called USB DriveCleanup. What it appears to have done is remove all installations of prior USB drives and when I plug in a drive that has been in the machine previously it then goes thru the install again. Yet still no drive letter. I think the program is doing what would manually be done by going into safe mode and cleaning out all the entries that build up there that don't appear in normal mode, then removes them. Basically it seems like a shortcut to manually doing it.
I also tried a registry fix that essentially asked me to delete the upper and lower filters. This seems similiar to fix for CD/DVD drives that no longer appear in Computer. This fix also didn't work.I tried removing and reinstalling the chipset drivers. Still no go.Running Windows 7 Pro SP1, H55 chipset.
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Nov 26, 2009
I have an IDE hard drive as my secondary drive used for backups or misc files. I also have an external. But for some reaosn on Windows 7 x64 the IDE (labelled as D randomly vanishes. BIOS sees it fine allt he time. Any ideas or suggestions aside from replacing it as it is still good.
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Jul 17, 2011
I have two optical drives on it one internal and one USB external.For some reason the external drive sometimes disappears from the computer. I can't find it anywhere then a few days later it pops back up. I have tried replacing the cables and checked to power and still the problem continues. I also tried reinstalled the system and sometimes it works.
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May 22, 2010
I have a 2nd hard drive and somewhat frequently it disappears from Windows explorer like it doesn't even exist. Then once I reboot the disk is back and perfectly fine and intact.I ran the Seagate tools against it and both the short test and long test passed just fine and it says that SMART has NOT been tripped.I did a lot of googling and found similar reports from others. But the things they suggest do not apply. For instance some reports are related to the driver disappearing after waking from sleep. In my case I can be actively using the drive and then it disappears. Also someone suggested disabling power management on the drive, but when I checked the drive is already set to Never power down.I am thinking that perhaps the SATA cable is buggy or not connected solidly. I'm going to open it up and try changing the cable. I really do think the drive is perfectly fine.
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Jul 10, 2012
I can only run one at a time instead of two. I would like to copy my 1.5tb over to my 2tb so I have a back up.
My laptop only holds 200GB of remaining data so I can't use that hard drive or I would.
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Dec 24, 2012
my dvd / blueray writers disappear from my system after the computer has been on for a while or i startup and try to burn a dvd/blueray...now here is a hint i recently removed the dvd and installed a Hot Swap drivebay..that hard drive dissappears when when the blue ray dissappears... thaey ar on the same sata chipset the mobo has 6 ea 6gb/s sata connectors and 2 3gb/s sata connectors..the blue ray and the hotswap bay are on the 3gb/s chipset...the mobo has the latest bios and it makes no differance what bios version is installed and when i reboot the computer they are back...
here are the stats:
mobo-gigabyte 990fxa-ud7 am3+
16 gb ddr3 1600 mem
amd fx-8150 8 core cpu
ati 6950 video card 2 gb
1200 watt p/s
7 2tb hdd
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Sep 25, 2011
Brand New Hard Drive Disappears from Windows after sleep; WD Raptor only 450GB, disappears from Windows 7 after system resumes from sleep. The drive is just a storage drive. I've got three other hard drives that work fine. Could this be a port issue on the motherboard, Asus P8P67 LE?
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Oct 23, 2011
.I didn't wait for the computer to tell me it was ok to remove the drive in the usb port. Now my computer no longer recognizes the external drive After removing my external hard drive (without the ok) my computer no longer recognizes the external hard drive. What do I do.
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Nov 7, 2010
I have used "search" in microsoft before there was windows. From that time to 95, 98, xp, vista, but Windows 7 has me baffled. My Desktop pc died and I was well backed up but now I need to find some stuff in one of the drives. Windows support is useless. Give it more than one word and it is lost most of the time. When desktop comes up I am limited to all programs on the c drive of where to search. When I go to computer and select an external drive of course the search option disappears. I detest the standard layout as it is so different from all the other systems which were easy to use.
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May 6, 2011
I am currently running Ubuntu 11.04 on my HP (DV5 1110em) laptop from an external USB 2 Buffalo ministation hard drive, I have noticed my machine is equipped with an E-SATA port. Would using an e-sata external hard drive be any faster that the usb option ?.
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Jul 25, 2011
My HP netbook will not recognize my verbatium external hard drive, which is about 2 years old and which it recognized last week. Help. Do I need a driver for it? If so, where can I find one?
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Feb 10, 2012
my catalyst control centre has stopped working and l can't open my external hard drives.as it says they are empty and also my pictures.could someone please tell me how l can get the catalysr control centre to work again after it made my computer crash as well
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Apr 7, 2011
My D 200gb SATA hard drive disappears around 1-90 mins while on windows 7. I have tried registry repairs and alot of things. Its not faulty cables because i used to have win Xp on exact same computer but reformatted to windows 7. Rebooting makes the hard drive reappear but it still disappears after a while. It still shows up in the bios though. When it disappears, it is completely gone, even in device manager.
my important data is on my 200gb D drive and i only use C for my os and some other things like Firefox because its only 80gb
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Dec 11, 2009
Does Windows 7 have a limit on how many USB external hard drives it will use? We have 5 WD My Book 1TB drives; 4 of them are recognized and work just fine with Windows 7 Home Premium 64 (which we recently did a clean install of to replace Vista Home Premium 64), but the 5th one doesn't show up with a drive letter (in Computer or Windows Explorer), even though it does show up in Control Panel.
The one we are having trouble with has had the latest firmware and WD SmartWare installed, and our computer has the most current Dell BIOS installed. We know the drive works, because we can plug it into our other computer which has Windows XP on it and it comes up with a drive letter just fine. Just wondering if there's a limit on how many of these you can use with Windows 7, since we had no problem with the drive until we installed the new OS.
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Jan 8, 2011
I bought a 2TB external hard drive (Western Digital) earlier this year on sale and for Christmas I got another one for redundancy (a back-up in case the one I have fails). My problem is that while my computer (a Dell Desktop purchased last year) will get a bit glitchy in picking up one (sometimes it won't recognize it but this is seldom), it will never recognize both at the same time. As a result, I have to add files (pictures, music, etc) to my external hard drives one at a time. I've checked all the USB ports with other hardware, and they all work - the only thing I can think of is that this is a Windows issue. I have both external hard drives assigned to different drive paths, so it's not a matter of that.
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Apr 17, 2011
I have a networked shared USB connected HD on PC 1 that works fine on PC 1. However when I tried to setup MS Backup for the first time on PC 2, it does not list the external HD called Drive "L". When I open COMPUTER on PC 2, the external drive is shown. Drive "L" is also set for ALL USERS, and shared label is indicated on PC 1. So the million dollar question is, why doesn't it show on the list of available drives to select for backup on PC 2? Also, there isn't any way in the backup setup screen to browse or search for any drives.
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Aug 11, 2011
i've got 2 extra 1TB Seagate drive:[URL]I use these to make backups of my 3 hard drives (1 x SSD, 1 hybrid, and 1 SATA). I brought this new machine back in April, and it was working fine up until then. However, after trying to install some software (which didn't wanna install in the end anyway, due to it being rubbish!), I can now no longer see these drives on my PC The weird part too - is that my Win7 laptop has exactly the same issue ... but my brothers Vista laptop, and Win7 PC see them just fine!To start with I was thinking the drive had gone faulty (as it wasn't working on both my machines), but after testing it on my brothers stuff it prooved they are both working fine The USB's I'm using to connect it to are fine (They work for USB sticks and other USB kit) ... so I'm at a bit of a loss as to what it could be? The even weirder thing - is that my brothers 500gb external drive (can't remember what make that was, but its not Seagate) works just fine!Its driving me up the wall as I can't do my daily backups (I'm a software developer, so having a current backup of my PC incase of a fatal mess up with my system is vital for me)
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Mar 5, 2010
I've a dual boot configuration, XP Professional and Windows 7, where the 2 partitions/OS's are independent by use of a third-party (non-Windows) boot manager. My problem is that any external hard drive I use while booted into my Win 7 OS becomes write protected within a few minutes of installation; however, the same drive is fully usable--i.e., not write protected--if used while booted into my XP Pro OS.
I'm slowly losing my mind. I've checked the registry entry involving "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\StorageDevicePolicies" and it's as it should be. I've used the command prompt to check volume/disk attributes for the external drives and all of them are readonly clear. Literally, running Windows 7, within minutes of plugging in an otherwise not write protected USB external hard drive it becomes write protected. Every time.
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Jan 8, 2012
My desktop does not detect and external hard drive that do not come with their own power supply. I have many externals that also plug into the wall and they are working fine; but whenever it is an external without a plug, i.e. the portable ones they are never found.
They do not show up in Computer Management, so it is not because I did not assign a letter to the drive.
I have tried various things, but I don't know what I should be testing for or looking for. These externals all work on other laptops and other desktops perfectly fine so it is not the externals. When they are plugged into my desktop, they light up normally like they should, but the desktop never detects them. I have tried these externals with the different USB cable I have on hand, but nothing seems to work. It doesn't matter which USB port I plug the device in, it still gives me no response.
I am running a i7 860 on a ASUS P7P55D Pro.
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Feb 19, 2012
I currently have 4 external hard drives connected to my computer. I have each of them set to sleep after an hour of inactivity. However, if I am using the computer, they stay asleep, until I delete something; anything. Any time I send something to the recycle bin, all four of my external hard drives wake up.
I would like for this not to happen. I already went to the Recycle Bin Properties and set each external hard drive to "Don't move files to the recycle bin. Remove files immediately when deleted" thinking that it would quit checking them for deleted files.
how to prevent these external hard drives from turning on when I delete files off of my computer. And just to be clear, I am NOT deleting files that are on the externals, they are files that are on the Computer.
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Nov 13, 2012
I recently noticed an issue when trying to connect to external hard drives. Initially noted that it wasn't showing in 'my computer' and so assumed I had driver issues and sought to update them from Dell's site. After doing so there was still no change, but noted that It was appearing in 'device manager'.I even tried updating the USB hubs from the Device Manager, and it states that they are all up-to-date with the correct drivers. Both external hard drives that i have tried has worked on other PC's so i assume that mine is the issue.
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Nov 6, 2011
I'm having an issue with trying to mount shares on my network to a WD Live player. Everything worked fine before reinstalling the OS on my computer. I am using Windows 7 Ultimate on a Dell XPS box. I have 2 external MY book 1TB drives with movies and music. The shares on my internal drives mount correctly through SSH to the WD Live but I get this error when trying to mount from the external drives:
Code: # xmount "//192.168.0.195/Films" "Films" cifs
mount: mounting \192.168.0.195Films on /tmp/media/usb/Films failed: Cannot allocate memory
xmount: xmount //192.168.0.195/Films Films cifs user=guest,iocharset=utf8,ro FAILED WTF?!? Also, I get this info when I run the command on SSH to see my shares:
[code]....
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Jul 25, 2011
I am running windows 7 64 bit, and have 4 external hard drives attached (not the best way, but until I can afford a server, the only way). I am using my computer as a media center only. When I wake my computer it can take a while (30 seconds to a minute), before I can use it, due to it starting up my external hard drives, but I have noticed a couple of times, my computer will wake without starting up my external hard drives (able to use media center within 2 seconds). Does anyone know if there is a way to get my computer to wake up without starting up the external hard drives every time?
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Jul 29, 2011
My external hard drives partitions are hidden in windows 7
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Aug 18, 2011
I plug quite a few different hard drives into my PC running windows 7 VIA a usb 3.0 Nexstar SATA adapter, normally just bare hard drives that need data backed up or moved, and as time goes on it seems to get slower and slower to find and bring up a new drive when i bring it in. My assumption is that it caches all the drivers for each drive and searches them to see if a matching driver is already installed for that specific device, or something of the nature. I had thought the 2-5 minute wait when plugging in a hard drive was just how W7 operates but apparently this is not the case according to some other tech savvy people i've talked to. Other USB devices such as flash drives don't take nearly as long to come up as a SATA I could clean out so as to get the process back onto a fresh leg.
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Dec 20, 2012
I have a new Dell with windows 7 and I have three external hard drives which I use on three other machines with xp pro one them. This machine will not open these drives and demands a format. They work perfect on my other machines
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