External devices no longer recognized

I have a Powerbook G4 that just recently started having issues with the external drives. Nothing put into the USB ports or CD/DVD drive show up on the desktop. Can anyone help me with this problem. I've already made sure they were checked as showing up under the Finder preferences.

Look for updated drivers for the devices on the manufacturer's website. This is a common problem after a major system upgrade although many devices still plug & play well. Although I didn't have the problems you're having I have had several driver updates to provide proper stability for my devices after upgrading to Leopard. Of course Apple secure upgraded drivers from many 3rd-party suppliers when they release a system update - but not from all.
Neville

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My iPhone device no longer recognized in iTunes. What can I do?

My iPhone device no longer recognized in iTunes. What can I do?

I just did a reset and that fixed it. You know how to do a reset? Hold the home and off buttons down at the same time unitl it goes off and then comes back on again. Then let them go. Try it. It worked for me.

2 TB External Drive no Longer Recognized by iMac 27"

I have a 2 TB external HD (actually two 1 TB drives housed together in a OQC Mercury Elite Case) that has been working flawlessly for about 10 months as my Time Machine backup to the iMac 27". I have it hooked via FW800.
Yesterday I noticed that TM backup failed and when playing around, I also noticed that the drive was no longer recognized. I check System Profiler and the drive was not seen. I did a PRAM reset (as this usually fixed the FW800 issues), but still no drive.
Thinking I had a faulty FW800 port on the iMac, I switched the connection to USB 2. I see the Drive listed in the USB Device Tree in System Profiler, but still nothing on Finder.
I opened Disk Utliltiy and I see a listing for a "2 TB External Raid Media" and then as a indent is says "Disk 3s3", but this is grayed out and you can not click on it to, say, repair permissions.
I installed an update late Friday night and I have no idea if this is the reason, but I am curious what the next step might be. I am using 10.6.4.

James,
There are some basics you can do to do trouble shoot the FW800 problem. First is doing a SMC reset, follow the instructions for Intel based iMacs. This letter covers multiple models of Macs and you need to follow the correct procedure.
The next item to try would be resetting the PRAM.
Finally The X Lab has written a good article on troubleshooting Firewire devices. You can locate that article here.
Hope this helps out some.
Regards,
Roger

HELP!!! External eSATA no longer recognized by DVR

Hi, I am experiencing a problem with my external WD eSATA harddisk. The setop box was recognizing it perfectly and I was recording programs with no problem. Suddenly the DVR does not show the drive any longer. I tried unplugging and rebooting. Did not fix the issue. I need help: what should I do???

Xpetepan wrote:
Hi, I am experiencing a problem with my external WD eSATA harddisk. The setop box was recognizing it perfectly and I was recording programs with no problem. Suddenly the DVR does not show the drive any longer. I tried unplugging and rebooting. Did not fix the issue. I need help: what should I do???
I had the exact same thing happen and you aren't going to like the answer/solution. One day my eSATA just disappeared, the DVR no longer recognized it. I unplugged, rebooted, reset, reconnectedetc. etc. and nothing. So I thought it was a DVR issue , after working with Verizon Customer Care Verizon sent me another 7232. I connected the eSATA to the new 7232, alas still nothing, it was not recognized. Turns out it was not a DVR/FiOS issue, the eSATA went bad (after 12 stinking days!!!!!!!!!!!!!!!). Western Digital eSATA's are junk. I contacted Western Digital and they sent me a new eSATA (if it is still under warranty they will replace it for free BUT you have to pay all shipping costs), I connected that and it works just fine (but I am holding my breath, it has been 11 days since I connect the new one).
If the eSATA is bad you need to contact that Western Digitial, NOT Verizon. If it is bad it is not a Verizon problem.
And the Verizon In Home Agent is pretty much useless, that did nothing except waste a lot of my time.

External iSight no longer recognized, built-in iSight works - how to fix?

I have a new MacBook Pro with Leopard and both the built-in iSight and my external iSight were recognized and I could switch between them. This past week or so my external iSight became no longer recognized even after unplugging and re-plugging in. When I plug it into the Firewire port, the green light goes on and it makes a whirring sound, but my computer does not recognize it in iChat, in PhotoBooth, nor in iMovie. I repaired permissions and it still doesn't get recognized in any applications. Is there a setting someplace that needs resetting? Or do I need to bring it into the Apple store for technical help?
Richard

Hello Richard
I wonder how many others have this problem?
A search or look through iSight Discussions will show you that a few of the many users of external iSight have reported problems using their Firewire iSights with MacBook Pro. I will leave it to you to try to determine whether that might be because few external iSight users have problems, few have MacBook Pros, or few use their external iSights with their MacBook Pros.
I agree that the system should allow both to co-exist.
Any other suggestions before I go to the Apple Genius folks?
If you have already considered all the suggestions about cables, connections, Firewire ports, possible conflicts, and the relevant suggestions in Apple's How to Troubleshoot iSight without success, you can also try the following:
• Backup your Home Folder, or at very least, your important files.
• Repair permissions. (Click here if you need help.)
• Then download and apply the Mac OS X 10.5.2 Combo Update.
• Finish with another Permissions Repair, and then check your iSight again.
Users have reported fixes to a variety of audio, video, connectivity, and software conflicts and unreliability issues after properly applying Combo Updates.
Please let us know how it goes.
EZ Jim
PowerBook 1.67 GHz w/Mac OS X (10.4.11) G5 DP 1.8 w/Mac OS X (10.5.2) External iSight.

LaCie External Drive No Longer Recognized

My LaCie d2 Hard Drive (Extreme) suddenly is no longer recognized. This may or may not have anything to do with my copying several files to it just prior, with much memory still available on it. I rebooted my computer twice and it was still not there. Is this a crash? Should I kiss that drive goodbye? If not, any suggestions?

Bizarre. After some time it now appears, and apparently with all files on it. I thought the cable was already secure on both ends, but perhaps it appeared after tightening them just slightly. Do you think that was it?

External Drive No Longer Recognized

I have a DiskGo Edge 500GB external hard drive that will no longer mount on my computer. It was dropped from about two feet, and no longer pops up on my desktop. Originally, when I launched Disk Utility, it would appear on the sidebar, but after about five minutes it failed to show up. I booted into a Leopard Install DVD and ran Disk Utility form there, and it appeared there, but still would not show up when logged in. Running the Data Rescue 3 program was no help, as it didn't even appear as a drive to repair.
The drive still emits a soft hum when connected, and there are no visible signs of wear. Any ideas?

All of a sudden it is now being recognized by Disk Utility again. However, if I click on it, I just get the rainbow wheel.
Terminal displays it through diskutil list, and this is the information when I type diskutil info /dev/disk2:
Device Identifier: disk2
Device Node: /dev/disk2
Part Of Whole: disk2
Device / Media Name: FUJITSU MJA2500BH G2 Media
Volume Name:
Escaped with Unicode:
Mounted: No
File System: None
Partition Type: FDiskpartitionscheme
Bootable: Not bootable
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Total Size: 500.1 GB (500107862016 Bytes) (exactly 976773168 512-Byte-Blocks)
Volume Free Space: Not Applicable
Read-Only Media: No
Read-Only Volume: Not applicable (no filesystem)
Ejectable: Yes
Whole: Yes
Internal: No
OS 9 Drivers: No

Certain USB and firewire devices no longer recognized

I am going to make a solid attempt to communicate the problem, I'm led to believe that there are some configuration settings that need to be corrected to solve this, though I am not able to find it.
The problem:
(what led up to it) My SSD was knocked out of commission do to plugging in a 'newer technology' 7-port USB hub that had its power supply disconnected. The computer froze, then would not boot. Applecare originally suspected the logic board but found the ssd was knocked out. They reported everything else was fine and the laptop was back in my possesion. I sent in the SSD for warranty replacement and put the original hard drive in. This is when the problem I am having now started.
For some some, a Lacie Rugged FW/USB drive shows up as an unknown device. The USB logitect c910 webcam will not register at all, and the Saffire 6 USB sound card is receiving power with the amp inputs/outputs working...but does not show up in the system preferences for sound. -- There is a second 2TB USB drive (also a rugged lacie) that mounts to the desktop occasionally, but on most reboots it doesn't show up, even in disk utility. When it does show up it appears to be working fine.
As a note:
- ALL of the above mentioned devices work properly on my father's PC.
- USB devices like my iPod, 8gb flash drives, new Belkin slim 7-port hub, all usb midi controllers, and an external CD burner work without issue
What I have already tried (several times):
-- repairing disk permissions and repair disk in disk utility
-- updating to the latest software, and installing the correct drivers for the sound card and webcam. The lacie external hard disks have no drivers for Mac
-- reseting the PRAM
-- reseting the SMC
-- plugging them in one at a time, in all ports, and ensuring they all have the correct power supply and working USB cable
-- upgrading from snow leapord to lion to mountain lion on the disk had no effect
-- by luck, I managed to boot up from the 2TB drive which contains a recent clone backup of the SSD. The same problem exists.
Before I ever submit a question, I make a solid effort to research past threads. So far, I have found no additional troubleshooting advice beyond the 7 steps I have tried as covered above. I am still awaiting the replacement SSD drive from owc. Again, the problem devices are:
- Lacie Rugged FW/USB 500gb external drive
- Logitech C910 webcam
- Saffire 6 USB sound card
- Lacie Rugged 2TB USB external drive (sometimes it shows up)
All have the correct supporting drivers, all 4 are recognized in my father's PC. None of my closest friends own a Mac to test them on theirs. I'm led to believe the problem may be configuration settings-related..though I currently cannot locate where such settings might be. Otherwise I have no clue what the problem is.
I apologize for the length of this post, but my intention is to minimize misunderstanding and rule out the options I've already tried. Any insight on this is appreciated as my music productions depend on both hard drives and the soundcard. Thanks for your time and attention. If any more info is needed I will be more than happy to try to provide it.
-Matt

Hi,
Thanks for your post! I took my ibook to an apple shop on monday to which I was told that the panic kernal that occured interrupted my software update and that the best thing to do would be to reinstall tiger. I did that, erasing and installing, and the problem seems to have dissapeared. I just wish I had read your post first! What was interesting was my mouse worked in the USB port but stuff like my memory stick didn't appear in disk utility. I also tried to replace the interrupted software updates with the Power PC combo one but that would not mount. I am not sure what all these means but if anyone has a similar problem to what I had, I suggest reinstalling the OS. Seems like a pretty weird and rare problem to have tho!

USB 3.0 device no longer recognized after USB driver update

Hello,
I was setting up a Windows 7 Pro x64 machine. This PC had 2 USB external hard drives plugged into the USB 3.0 ports in the back. These drives were working fine after Windows installation using (I guess) the Windows default driver.
However, after I installed the USB 3.0 driver downloaded from the motherboard vendor, one of the drives wasn't recognized anymore. In fact, Windows told me the device had malfunctioned. I tried reinstalling the USB 3.0 driver and plugging the troubled device
into different ports but these measures didn't help.
That hard drive still works when I plug it in a different machine and this allows me to get the data off it. However, I would like to fix the problem described above and to resume using this hard drive with its original machine.
Any help please? Thanks!
OS: Windows 8 x64 Pro with Media Center. All drivers up-to-date.

Make sure it's the right series usb 3 driver, series 7 or series 8. Series 7 drivers are version 1.x and series 8 are version 2.x. They use the same device id's.

USB Device no longer recognized (Ratoc U2SCXU SCSI Converter)

I'm having problems with a device that used to work fine in an older MacOS (10.5, Leopard) but no longer being recognized in Lion. The Ratoc Systems International SCSI COnverter model U2SCXU is no longer visible in System Information, their Utility, nor the scanning software (VueScan). This set up used to work seamlessly in previous OS's.
The Ratoc device is being powered through the SCSI connection and lights the power light no problem. No matter wherther through a hub or direct, the USB is no recognized nor is the software. I tried to email the manufacturer but in the meantime thought to post this as a question while waiting... Does anyone have a similar problem?
Using with a Polaroid SprintScan4000 negative scanner. This device and the converter were all running and playing happily in OS X 10.5. There seems to be nothing I can do to make the device appear in the window, nor be recognized in software. Also tried with laptop running the same OS. I believe this is a software issue with the OS. There is a firmware update that might be able to be applied via the Utility software (U2SCXU_50) from Ratoc website, except that the Utility doesn't see this unit either.

Make sure it's the right series usb 3 driver, series 7 or series 8. Series 7 drivers are version 1.x and series 8 are version 2.x. They use the same device id's.

External Harddrive no longer recognized

Hey all.
Ok, so I have a 15" MBP and I bought a 1 TB external HD firewire 800 because I needed stuff for my video editing. Everything worked perfectly, I would unplug it and plug it in all the time (properly and improperly). Well I recently moved and it won't be recognized by the laptop anymore. It is plugged in and on and everything works fine. When I plug it in, the harddrive makes noises and then nothing happens. It does NOT appear in disk utility either. There is a switch on the harddrive to make it so whenever the harddrive is plugged into something, it turns on. When I plug it into the laptop it still turns on yet the laptop does not recognize it.

Welcome to Apple Discussions!
A couple of possibilities are a bad FW cable, a failed FW chip in the external drive, and your FW 800 port not working.
Do other FW peripherals work? If not try a SMC Reset:
http://support.apple.com/kb/HT1411?viewlocale=en_US
If so, try another FW cable. If the drive has USB capability, see if DU sees it with a USB cable.
If the Mac can see the drive with USB, but not with FW, you might be able to put the drive in a different enclosure and have FW capability again. Look for an enclosure with an Oxford 924+ chipset.
Good luck!

ITunes 11.1.5.5 - devices no longer recognized

Yesterday I upgraded to iTunes 11.1.5.5. Immediately before I was able to plug in my phone and sync. Immediately after upgrading, no devices are recognized so none can be sync'd. Any thoughts?

Ok, after trying a number of things mentioned elsewhere found this article that made it work again - http://support.apple.com/kb/TS1538
Specifically, item 5 and down near the bottom for the section on "If only Apple iPhone, Apple iPad, or Apple iPod appears. Following the instructions to update the driver by selecting the "have disk" option is what did the trick.

External HD no longer recognized...

I was told that my previous post was posted in the wrong forum, so hopefully this is the right place to post it.
I've been using an external HD for the past few months, and so far it has been working great. But now, whenever I turn it on, it isn't detected my Mac. Please help me, as there are many important files that I need to retrieve from it.
If this information helps at all, the external HD is a 500GB LaCie Big Disk Hi-Speed USB 2.0. I noticed that whenever I turn it on, it makes a clicking sound. Any suggestions?
-M.R.P.

As USB HDD:s get older these things happen. What you can do is "force" your mb to recognize the USb HDD. Try launching the app "USB prober" it should be native in your OS X if not, find on your original DVD.
When you start that APP it seems to get MB:s to access USb hdd.
If it doesnt work try restarting the USB HDD. If that doesnt work retart both MB and YSb HDD If this doesnt work buy a new external HDD. go for a brand name and keep it still and cool always.

Update from 5.0 to 6.1 failed Device no longer recognized.

Updating ipod touch 4th gen to latest iOS. Backed up then failed. Pointed me to article to update iTunes. Updated to the latest iTunes. Rebooted computer now iTunes will not recognize device. HELP!

Not know the current status of the iPod all I can suggest is:
Try:
- iOS: Not responding or does not turn on
- Also try DFU mode after try recovery mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
- If not successful and you can't fully turn the iOS device fully off, let the battery fully drain. After charging for an least an hour try the above again.
- If still not successful that usually indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.
Apple Retail Store - Genius Bar

Firewire external mobil disk hard drive is no longer recognized

After last system update, my firewire external mobil disk hard drive is no longer recognized. Any solutions?
Why does MacOS go backwards... gets worse over time?

Thought you could use this info about getting FireWire to work! I have had no trouble with any update Apple puts out (the Combo update is what I normally choose). Are you running 9.2 like your specs. say? You are in the Tiger forum, so I'll assume you haven't updated your Macs specs.
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that did'nt work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try. Yours may be the 10.4.5 Combo update. Others reading, download the Combo that applies to your system.
If that still did'nt get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
For those of you with Macs that are not PowerBooks or iBooks, a bad internal battery can cause FireWire to not be recognized, so make sure it's good!
Good Luck!
Cheers!
DALE

External devices no longer recognized

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