Usb drives disconnecting

My wifes late 2010 macbook pro has been having a serious issue with ejecting just about any usb drive connected. Shes a graphic designer and is constantly plugging and unplugging portable drives and mini flash drives, but always sure to properly eject them before pulling them. Recently (and becoming more and more frequent), the drives with just disconnect on its own and will give the warning that the drive was not properly ejected. it then immediately tries to mount again and disconnectes again. this happen no matter which drive or flash unit we use on either usb port. every drive she has had problems with works perfectly fine with no eject problems on my 2011 macbook pro, so that rules out bad cables or drives. We've also tried usb hubs and zapping the pram, but with no success. as of 5 mins ago, i just tried to connect a usb microSD adapter with a 8gb microSD card inside and it ejected in less than 30 secs and goes on an endless loop of mounting and improperly ejecting. the same usb is now in my macbook pro and is fine as i write this.
if anyone has had this issue or knows what the problem may be, please enlighten us. im leaning more towards the ports are shot....but ive been know to be wrong. any help is appreciated. thanks in advance.

I am having the exact same problem under 10.6.1 with a WD MyBook USB drive, formatted as Mac OS Extended Journaled. The drive worked fine under Leopard, but since upgrading, I cannot copy anything to it without the drive ejecting (while copying files) and then remounting on its own. Within 3 minutes, it will eject, remount, eject, etc., about 5 times.
I have repaired permissions, checked the USB drive with disk utility, checked cables, switched USB ports, all to no avail.
And I am not using a USB hub; the drive is plugged directly into the back of my iMac.
It feels like this problem is related to Snow Leopard and the "auto-sleep" features of these drives. In my gutt, I believe these drives would work if they had a proper on/off switch, instead of auto-sleep, etc.
One other thing I've noticed (sorry to ramble on): I can eject the drive, but it will remount to the desktop after about 30 seconds.

Similar Messages

Airport Extreme + USB Drive Disconnecting after first Timemachine backup

Hello,
This is the setup;
* Mac Book Pro's 15" and 17", both early 2009 release, 10.5.8
* Airport Extreme 7.4.2 with
* Lacie 1TB Poullon USB Drive
I've made the AP Usb-drive as the Timemachine drive. It always manages to do one back up but during the next backup the drive disconnects and I have to reboot both the macbook and ap to get it connected again.
Airport isn't working that good all together - the max speed on WiFi I get is 25Mbps, eventhough with a LAN wire connected to AP I get 97Mbps. The Airport is set up to run with 802.11n only 5Ghz, multicast rate 6 Mbps, 25% transmit power and with wide channels.
Could someone tell me which kind of setup is the best and why does the drive keep disconnecting during the second backup?

Im having similar problem and have a lacie drive? i have great performance from the router and my iphones however.
I dont have to reboot the MBPs. i unplug and plug the router and then reconnect the drive in the finder then go to time machine and reselect the drive and it works then fails at some point. happens on all my drives. could be a time machine problem could be an airport problem. could be the disk going to sleep.
I think its time to call apple and report the problem.
I am going to try and connect the drive to the laptops for a day and see if it does the increments directly.

Airport Extreme + USB Drive Disconnecting after one backup

Hello,
This is the setup;
- Mac Book Pro's 15" and 17", both early 2009 release, 10.5.8
- Airport Extreme 7.4.2 with
- Lacie 1TB Poullon USB Drive
I've made the AP Usb-drive as the Timemachine drive. It always manages to do one back up but during the next backup the drive disconnects and I have to reboot both the macbook and ap to get it connected again.
Airport isn't working that good all together - the max speed on WiFi I get is 25Mbps, eventhough with a LAN wire connected to AP I get 97Mbps. The Airport is set up to run with 802.11n only 5Ghz, multicast rate 6 Mbps, 25% transmit power and with wide channels.
Could someone tell me which kind of setup is the best and why does the drive keep disconnecting during the second backup?

Im having similar problem and have a lacie drive? i have great performance from the router and my iphones however.
I dont have to reboot the MBPs. i unplug and plug the router and then reconnect the drive in the finder then go to time machine and reselect the drive and it works then fails at some point. happens on all my drives. could be a time machine problem could be an airport problem. could be the disk going to sleep.
I think its time to call apple and report the problem.
I am going to try and connect the drive to the laptops for a day and see if it does the increments directly.

All USB drives disconnect after upgrade and clean install of MAC OS X Mavericks

I first upgraded to Mavericks and noticed that my external USB dries would disconnect after MBP Retina Mid 2012 model was updated to Mavericks. These worked fine in all versions of Mac OS X before upgrade. So I did a clean install figured my machine would benifit from this anyway. This did NOT fix the problem.
Wouldn't be much of an issue but I use this macine as a media server with Plex and all the media is in one of the external USB 3.0 drives. All drives are from Seagate, and have found no info there. Guessing this is a bug that Apple needs to fix unless its a Seagate issue which I doubt.
My TEMP FIX while my machine is plugged in to the power adapter and drives.
SETTINGS - ENERGY SAVER - Power Adapter - Computer Sleep set to NEVER

If the tracks are recognized by your iPod (playable), search VersionTracker for "iPod". You'll find a number of utilities that can transfer your tracks and your playlists from your iPod back to your Mac.
If they're just on your iPod as data, then I'm not certain since I don't use a custom hierarchy, but you should be able to copy the folder back to your iTunes Music folder, turn off the "copy to iTunes library when adding to library" preference, and then use the Add To LIbrary command to get them recognized by iTunes. Again, though, I don't use a custom hierarchy, so you might want to ask that question as a new post, just to get additional opinions.
BTW, an iPod is not a reliable backup for your tracks. Too many situations can arise that would cause your iPod to need to be erased. I strongly recommend that you make backups, particularly of any tracks purchased from the iTunes Music Store or that would otherwise be difficult to replace, to CD, DVD, external hard drive, or other medium.

USB Drives Randomly Disconnect and then Reconnect

On my laptop I have a USB drive where I keep all of my data. It is always plugged in while the laptop is in use. However a number of times the USB drive disconnects itself and then immediately reconnects. I get the notification that my Y drive has been connected. This causes problems for my synchronization application that constantly monitors changes on my C drive. I have changed all of the Power options that prevent the drive from powering down when not in use but the problem still happens. This problem happens on all of my USB ports. The external drive is a Western Digital My Passport 2 TB drive. This problem is getting to be a real nuisance. I have only had the laptop for 5 months. In searching the internet there seems to be a lot of people that have been having this problem but I couldn't find a suitable solution. I never had this problem with any previous laptops that used this external drive. The laptop is running Windows 8.1 with 12 GB RAM and a 1 TB hard drive. This is the operating system that was installed on the laptop when I purchased it. Has anyone found a fix for this type of problem? Thanks,Joyce

This is a known bug and Microsoft are working on a fix. They plan to fix this before Firefox 4 reaches release candidate phase.
A workaround is to change a preference in Firefox:
# Type '''about:config''' into the location bar and press enter
# Accept the warning message that appears, you will be taken to a list of preferences
# Locate the preference '''html5.enable''' and double-click on it to change its value to '''false'''
If you do this, remember to set the preference back to true by double-clicking on it again when Firefox 4 release candidate is made available, the bug should be fixed by then.

Obscure Nano and Mini XP USB Driver Problem Finally Solved

I had a rather obscure USB driver registry problem that few others would probably have, but this might be helpful.
I was unable to get Windows XP SP2 Media Center Edition to properly recognize either my iPod Mini or Nano 3rd generation. The iPods would be seen by XP in Device Manager (would show Apple iPod USB Driver) when connected, but would immediately disconnect. The Apple iPod USB Driver properties would then show “This device cannot start (Code 10).”
I first tried all the Apple-recommended fixes: the five Rs; reinstalling the Apple iPod USB driver; disconnecting all other USB devices; switching USB plug-in points; putting the iPod into Drive Mode; and all the other things shown in the troubleshooting guide “iPod shows up in Windows but not in iTunes,” http://docs.info.apple.com/article.html?artnum=93716
None of the above worked. And on occasion after uninstalling and reinstalling the iPod USB driver, I would get a blue screen with the error message “driverirql_not_less_orequal,” sometimes followed by stop codes and something called “USBPORT.SYS.”
Apple phone support was unable to help, claiming that XP Media Center Edition was not supported, though the problem appeared to have no relation to MCE versus Home or Pro.
Then I finally stumbled onto the solution. I previously had installed a USB drive encryption program (NTINinja) on my computer. Although I had uninstalled the program months earlier, it had left a registry entry which was interfering with the iPods. When I deleted the registry entry, the problem was solved.
Those of you having similar recognition problems as described above might check Control Panel, System, Hardware, Device Manager, Universal Serial Bus Controllers, USB Root Hub, Properties, Details, then select Class Lower Filters in the drop-down box. If there is an entry, that might be the problem.
To get rid of the entry, first write down what it is. Then go to Start, Run, Regedit. Backup the registry (File, Export). Then go to Edit, Find, and type in the suspect entry. It should find the registry key containing the entry in HKEYLOCALMACHINE\SYSTEM\CurrentControlSet\Control\Class\.
Right click on the LowerFilters key and select Modify. Then delete the suspect entry. Close the registry editor. You might have to reboot – can’t remember.
I can’t guarantee the above is completely accurate, but it may help someone.

OK now! Dag, I was going crazy. I had two brand new Raptors and was trying to hook them up in a RAID 0 config. I am no dummy. It would hang at detecting arrays. I could not figure it out for the life of me. I will not talk about all of the combos that I tried. My buddy told me to try datalifeguard from WD. I did. Well, one HD showed no serial number in the extended test. An error message popped up. Said the drive was not working. So, Newegg sends me a dead drive and wastes days and days out of my life. I hooked up the one good drive just now. What do I see? For the first time in my life, I am seeing the raid bios! This almost cost me a divorce. Seriously though, the wife would come in and rub my shoulders like a fighter after a few hours of getting my azz whipped by this new rig. I am now going to make the floppy with the newer drivers like was done here. Just incase. I am in Raid bios now in the other room. Time to go set up XP on one drive for now. I refuse to wait for the RMA'ed second Raptor.

[SOLVED] (hopefully) USB Hard drive disconnects

I have a 2TB SATA drive which I used in a stationary computer (as a server). The drive is encrypted using LUKS and for a filesystem I use xfs. Unfortunately that computer died, so I figured I'd migrate everything over to a laptop instead. I put the 2TB SATA drive in an USB drive adapter, and it worked as it expected.
Until a few hours after when I suddenly couldn't use the drive any longer. It always happens after I haven't used the drive in a little while.
dmesg shows the following relevant information:
[ 81.300065] usb 1-2: new high speed USB device number 2 using ehci_hcd
[ 81.516917] usbcore: registered new interface driver uas
[ 81.538799] Initializing USB Mass Storage driver...
[ 81.538966] scsi2 : usb-storage 1-2:1.0
[ 81.539424] usbcore: registered new interface driver usb-storage
[ 81.539429] USB Mass Storage support registered.
[ 82.548407] scsi 2:0:0:0: Direct-Access WDC WD20 EARS-00J2GB0 PQ
: 0 ANSI: 2
[ 82.551630] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 82.552000] sd 2:0:0:0: [sdb] 3907029168 512-byte logical blocks: (2.00 TB/1.
81 TiB)
[ 82.554255] sd 2:0:0:0: [sdb] Write Protect is off
[ 82.554262] sd 2:0:0:0: [sdb] Mode Sense: 38 00 00 00
[ 82.554266] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 82.557630] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 82.593632] sdb: unknown partition table
[ 82.597254] sd 2:0:0:0: [sdb] Assuming drive cache: write through
[ 82.597262] sd 2:0:0:0: [sdb] Attached SCSI disk
[ 104.697278] XFS (dm-1): Mounting Filesystem
[ 105.023577] XFS (dm-1): Ending clean mount
[ 4249.281149] usb 1-2: USB disconnect, device number 2
[ 4440.332930] INFO: task khubd:370 blocked for more than 120 seconds.
[ 4440.332935] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 4440.332939] khubd D 00000000 0 370 2 0x00000000
[ 4440.332947] dea97d74 00000046 c1030357 00000000 00000001 00000003 5d6764c7 000003dd
[ 4440.332956] 00000096 ddd02180 dea97d04 c10303a4 00000000 00000096 dea97d18 c1527480
[ 4440.332965] ddc84c38 c1527480 dec06480 de38f8e0 de2a0d20 00000000 00024592 00000000
[ 4440.332974] Call Trace:
[ 4440.332987] [<c1030357>] ? __wake_up_common+0x47/0x70
[ 4440.332993] [<c10303a4>] ? __wake_up_locked+0x24/0x30
[ 4440.332998] [<c10318ab>] ? cpuacct_charge+0x5b/0x70
[ 4440.333006] [<c11bd4b4>] ? rb_insert_color+0xc4/0x100
[ 4440.333014] [<c13487d5>] schedule_timeout+0x265/0x2e0
[ 4440.333022] [<c103f883>] ? check_preempt_wakeup+0x123/0x1b0
[ 4440.333028] [<c1036f72>] ? check_preempt_curr+0x72/0x90
[ 4440.333033] [<c1347527>] wait_for_common+0x97/0x120
[ 4440.333038] [<c10410a0>] ? try_to_wake_up+0x350/0x350
[ 4440.333043] [<c13475c7>] wait_for_completion+0x17/0x20
[ 4440.333048] [<c106390e>] kthread_stop+0x3e/0x130
[ 4440.333058] [<e00e6178>] release_everything+0x28/0xa0 [usb_storage]
[ 4440.333064] [<e00e620f>] usb_stor_disconnect+0x1f/0x30 [usb_storage]
[ 4440.333089] [<e0f9d64c>] usb_unbind_interface+0x3c/0x140 [usbcore]
[ 4440.333096] [<c1264271>] __device_release_driver+0x51/0xb0
[ 4440.333101] [<c12642f4>] device_release_driver+0x24/0x40
[ 4440.333106] [<c1263e6a>] bus_remove_device+0x5a/0x80
[ 4440.333110] [<c1261dc8>] device_del+0x108/0x170
[ 4440.333121] [<e0f9b691>] usb_disable_device+0x91/0x1a0 [usbcore]
[ 4440.333130] [<e0f94d1a>] usb_disconnect+0x9a/0x120 [usbcore]
[ 4440.333141] [<e0f967dc>] hub_thread+0x86c/0xf60 [usbcore]
[ 4440.333146] [<c1347a25>] ? schedule+0x275/0x9c0
[ 4440.333151] [<c1040efc>] ? try_to_wake_up+0x1ac/0x350
[ 4440.333157] [<c1063fa0>] ? abort_exclusive_wait+0x80/0x80
[ 4440.333161] [<c1031b4e>] ? complete+0x4e/0x60
[ 4440.333172] [<e0f95f70>] ? usb_remote_wakeup+0x40/0x40 [usbcore]
[ 4440.333176] [<c10638bd>] kthread+0x6d/0x80
[ 4440.333181] [<c1063850>] ? kthread_worker_fn+0x160/0x160
[ 4440.333187] [<c134b8be>] kernel_thread_helper+0x6/0x10
At first I figured the drive was suspending, so I've tried to play with the settings in /sys/bus/usb/devices/.../power/. To my knownledge the default settings are set to never suspend, and the dmesg doesn't say anything about suspending any drives (should it?), so I doubt this is the case. And also, I can still hear that the drive is on.
I have tried changing the USB cable but I got the same error.
So I figure, it's either a hardware problem (the USB drive adapter is bad) or it's the kernel -- I've read through some mailing lists that older kernels had some problems with USB devices disconnecting.
What I would like to try is to disable ehci_hcd and try to use a different module, though I need a little help with what module and how I would go about doing this. (I see in the lspci a reference to uhci, maybe try that?).
Anyone has any other ideas I can try that would also be greatly appreciated.
Thanks in advance.
lspci
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev d3)
00:1e.2 Multimedia audio controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 03)
02:01.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller
02:03.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
02:08.0 Ethernet controller: Intel Corporation 82562ET/EZ/GT/GZ - PRO/100 VE (LOM) Ethernet Controller Mobile (rev 03)
lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 04fc:0c25 Sunplus Technology Co., Ltd SATALink SPIF225A
Last edited by Canute (2011-07-29 13:36:55)

I think I may have fixed it, or rather; it has worked the last 8 hours which is twice as long as the longest it did before.
Through ubuntu's bug tracker I found out that there appears to be a bug in the kernel (#32432). From what I read on the bugzilla, that bug appears to be only for 2.6.27-2.6.38 (is it??) and I was using 2.6.39 so I was really unsure if that bug applied to my kernel.
Nevertheless I built my own kernel with the help of abs. I used linux version 2.6.38, the standard arch linux patch for 2.6.38 and the patch located here.

Can I disconnect a bitlocker USB drive that is in a state of Decryption (paused) and attach to another machine?

Can I disconnect a bitlocker USB drive that is in a state of Decryption (paused) and attach to another machine?
The background on this question is that I didn't realize at first that I was plugged in to a USB 1.1 hub and it took over 1 hour just to get to 1% decryption. I've paused the decryption but a tad hesitant to disconnect and plug in to another system.

Hi,
How about your problem now? Generally speaking, when you encrypt USB drive using Bitlocker, you can pause encryption if you need to remove the device for some reason. If you don't do so, you could damage or lose files stored on the device.
If you need further assistance on this particular issue or any other Windows related issue, let us know and we will be glad to assist you.
Roger Lu
TechNet Community Support

Mac Mini is disconnecting all usb drives whenever any new USB device is plugged in.

I have 10.6.7 on a Mac Mini 2 Ghz Intel Core 2 Duo with 2 GB of ram and a 60 gig hard drive.
It seems that every time I plug or unplug any USB device, it disconnects all the connected USB drives. This seems to be something new, but I have not really often used the other USB ports either. It is very frustrating, as you can imagine. If I plug one drive in, and then plug another drive in, plugging the second drive it often disconnects the first one.
But it is not just drives. I can have only one drive plugged in, and unplug and replug the keyboard, and the USB drive will disconnect. Then I will get message about how I did not safely disconnect the drive.
Any help would be great.

Yes. One is a mini Toshiba USB drive with no other options for power. But even unplugging an iPhone USB cord with NO iPhone attached to it will cause the drive to drop off. The second USB drive I plugged in today had the same issues. Basically I have to unmount a drive, then plug in a second device, then remount the drive using disk utility. Very painful.

My macbook pro 15" usb drives keep disconnecting and transfer speeds become very slow.

Both the usb drives on my macbook pro 15" (2012 model) have been transferring speeds very slow and when i try to use my harddisk it keeps disconnecting. Please help

when i try to play games like minecraft and somtimes when im on the internet, ive been doing some research and apparently my cpu is really low, %User: 2.68 %System: 1.87 %idle: 96.74, is that bad? and also it is very quick to charge but like i said cant keep a charge for very long, end up having to charge it almost twice a day

Unplugging headphone disconnect usb drives and sd slot causing data lost

Hi i'm Michele from Italy
On my macbook pro, when i unplug headphone and there is a usb drive connected i have problems an system give me message of unsure eject and sometimes the drive became unreadble forcing me to reformat.
Same problem with sd slot but my sd card became corrupted and i can not use it anymore.
Very bad first experience for me just caming from windows/pc notebook.
Michele
[email protected]

Welcome to Apple Discussions!
It sounds like you have been unplugging these before ejecting them. To eject something, click on Finder at the lower left of your display. In the Finder window, you will see your USB device with a symbol to the right that looks like a triangle with a line under it. Click on this symbol to eject the device, and once the icon has disappeared from the desktop and the drive has spun down, you can safely turn off the device and unplug it.
Hope this helps!

IPhone 5 iOS 6.1.4 and Windows 7 x64 USB Driver Issues

Been pulling my hair out with this one for the last week or so and haven't had any luck finding anything on the forums or the web regarding a solution short of a full reinstall of Windows 7 which I am not prepared to do at this time; so hoping someone here can shine some light on this for me
I have a iPhone 5 that is updated to iOS 6.1.4 and a recently built Windows 7 64-bit machine. All of my other USB devices function fine (keyboard, mouse, Xbox 360 wireless receiver for Windows, and a Seagate 2TB external USB drive). I've downloaded the most recent version of iTunes, installed successfully and then attempt to plug in my phone to sync. I get the standard Windows *ding* that I've attached a device and 1 of 2 things happens (I haven't been able to determine what causes one reaction to happen versus the other): Windows will successfully install the 'Apple USB Mobile Device Driver' successfully and it will appear under my USB devices in Device Manager. However - iTunes will not recognize the phone and I cannot see it in Windows either. In the 'Devices and Printers' snap-in my iPhone will appear under 'Unspecified Devices' as the 'Apple USB Mobile Device'. The iTunes diagnostics fail to find a connected device so the tests fail. As soon as I unplug the device, the strangest thing happens: Windows will start trying to install a device driver and after a few seconds it will fail stating that the "MTP Device Driver" installation failed because the device was unplugged. iTunes also thrown an error "iTunes cannot connect to this iPhone" throwing error code 0XE8000065 (I've also seen error code 0XE8000085 as well)
After some finagling, I've managed to get Windows to recognize the device under 'Portable Devices' in Device Manager as an "MTP USB Device" using the generic driver. At this point, I've tried updating the driver and manually specifying the Apple USB driver located in the C:\Program Files(x86)\Common Files\Apple\Mobile Device Drivers which updates successfully but then changes the device to "Apple USB Mobile Device" and moves it under the USB Devices in Device Manager; and Windows nor iTunes can see it even still.
I've tried removing iTunes several times and ensuring that all remnants of the installation are gone (registry and folders on the installation drive) and have disconnected all my USB devices short of the keyboard and mouse and still I get the same results. At this point, I'm afraid that a re-install of Windows is going to be the solution; but it's a drastic one (I have a SSD drive where Windows is installed along with all of my games for faster load times/better performance and do not want to have to redownload\reinstall all of them) and I'm not prepared to undertake it at this time, which is why I'm posting here
I've used a utility called USBDeview that sees my phone is connected - so I know from a functional standpoint that my USB ports are good and working. I also know the cable is good too - my daughter's PC (Windows 7 32-bit with NO iTunes) immediately sees the device when I plug it in, installs the drivers, recognizes it as an iPhone and I can then see/browse it in Windows Explorer like I would normally expect. My work PC (Windows 7 64bit, NO iTunes) sees the device just fine as well. I would immensely appreciate anyone that has seen this issue or has any additional solutions I can try.
It's also worth mentioning that I've never used Kapersky antivirus so the UPPERFILTERS value in the registry that I've seen as a solution on some forums is not present on my machine. I'm using Microsoft Security Essentials as my antivirus (no flaming please lol - it meets my needs and is extremely lightweight, which is why I'm using it on a gaming rig) and it's not indicating any issues. I've also tried running iTunes as an administrator (even though my account is a local admin on the machine) and that does not have any effect either.
If there is anything I left out, please let me know; and I thank you in advance!

AphexTwin wrote:
- no Apple input?
Of course not. Didn't you bother to read the TOU of this forum? This is a USER TO USER technical support forum. Apple doesn't post here.

Will only support one USB drive at a time

Background
This is happening with a Mid 2007 Mini, OS X 10.7.4.
I use this Mini soley as an iTunes music server. The OS is on the internal drive. Music is on a separate drive, as is Time Machine. No keyboard is connected. I do all maintence wirelessly via screen sharing from another Mac.
Recently I changed the drives from conventional ext. FW hard drives to ext USB SSD. The USB enclosures are USB2/3 "Hornet" brand. The SSDs are Samsung 256GB 830s.
The Problem
Only one USB drive will stay mounted at a time. Both drives will initially mount but once one is put into use, i.e., play a song or start a Time Machine update, the other drive will unmount and I get the nasty "You disconnected your USB drive improperly...." I've seen the threads on USB drives randomly unmounting. This is not that issue. My drives do not randomly unmount; one will unmount as soon as the other is in use. (The unmounted drive stays unmounted. It does not remount when the other drive is no longer in use).
The drives came with USB cables that had dual ends, one for data/power the other power only. The problem occurs regardless of whether I use just the data/power or both.
My initial thoughts are:
1) It's a power issue and the Mini can't support the power requirements of both drives simulateously. I need an A/C adapter.
2) It's an incompatible enclosure (even though it said Mac compatible, who knows if it was actually tested and not just presumed).
3) Crappy cables.
The Question
Since testing any of these hypothesis will cost me $ (and time to buy -- and return if unsuccesful) I'm hoping someone here has experienced something similar to guide me to the fix a bit quicker. Am I close here, or could it be something else?

I believe Bus powered drives are for the birds, & more often a problem on Macs than PCs, get a good AC powered USB hub... or two.

Ipod Nano USB driver fails continuosly

Initial problem: Device not found; located error in USB driver, uninstalled driver, rebooted sytem, found new driver - installed properly able to sync. (No hidden drivers listed in que) unconnect/reconnect ipod and USB driver error returns.(Each time)
Background services running are: Yahoo ISM, winamp, InCD, HP monitor, ATT self support, Logitech quick cam, McAfee, Index search.
Any known reasons why USB driver would continue to fail from dormant state? (unconnected and plugging in)

Make sure you have no other USB drives connected to your computer when connecting your iPod. I have a 4th gen Nano which fails to connect up when I connect it to my other Vista-based PC only if my USB hard disk is connected up.
I need to disconnect my external USB hard drive in Vista to get it to "see" the iPod. Also, might be handy to disconnect other USB devices like printers and your Logitech camera (which I have also connected, but that doesn't have any problem).

Mini doesn't always connect bluetooth and external (USB) drives on boot

I have had a new Intel mini for 4 months now (we also have a PPC G5, which we love). In the last few weeks the mini started to not connect my Bluetooth keyboard and mouse, nor recognize some of my USB peripherals when booting up. When this happens, it also makes a repeated "startup sound - bong!" echo when the start button is pressed. I have two external USB drives, one 500GB Phantom and one 500GB WD MyBook. When the Apple logo appears at boot, I can see the activity lights flashing on the drives as the BIOS interrogates the USB connections, but after the Leopard start up desktop appears, the only drive shown is Macintosh HD, the mouse pointer is at the top left of the display and will not move, nor will the keyboard do anything. I have read every post on this subject and tried all of the resets suggested. Sometimes this works after a few attempts, sometimes it takes 6 or more tries - disconnecting all cables, and turning the computer on again and again. Occasionally the WD MyBook drive appears on the desktop, yet still the Bluetooth is unresponsive and the other drive absent. I am getting frustrated having to disconnect everything and trying to boot this thing up, sometimes for one hour or longer before I can use it properly (all of my work is on the external drives).
There MUST be a firmware update for this by now, because I see that I am not the only one experiencing these problems, and this is obviously some problem with how the BIOS is communicating with the bus.

Hi amyta pdx-
I'd be careful jumping to conclusions or the troubleshooting process may get clouded. For one thing those WD drives are junk and most people using them eventually have problems.
What happens with everything disconnected from the Mac except a mouse connected to a USB port on the Mac and the monitor connected to the video port only?
Luck-
-DP

Usb drives disconnecting

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