Not recognizing my external drives

I've got two 1T Fantom drives connected via USB. No problems with them in 10.5. Snow Leopard thinks they are corrupted and wont mount them. What can I do, short of formatting. I tried disk utility verify and repair and that failed.
Also, if I were to reformat, what format should I pick so the drive is accessible to both Mac and Windows?

I have two thumb drives not being recognized by my Mac. I suspect that some of my backed up files from my Open Office program are to blame as this program is windows based. My question is, if I get a large external drive and utilize Time Machine, which will b/u these Open Office files, will the Mac stop recognizing the drive if I shut down or do a restart? If so what are my options?

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My MacBook Pro is not recognizing my external hard drive. The hard drive is listed in disk utilities but an icon does not pop up and I cannot access the data. Is there any way to resolve this?

My MacBook Pro is not recognizing my external hard drive. The hard drive is listed in disk utilities but an icon does not pop up and I cannot access the data. Is there any way to resolve this?

WE know Disk Warrior is more reliable, hence more useful, and should be in any disk mechanics toolchest.
For the record, I don't know anything of the kind. I have yet to see evidence that Disk Warrior is useful at all.
What I do know is that you seem to take every opportunity you get to promote it in these forums. Do you work for Alsoft?
Let me be a little more explicit. My opinion is that Disk Warrior is a waste of money if one has backups. If a journaled HFS directory is so badly corrupted that it can't be repaired by Disk Utility, then the volume should be reformatted and restored from backup, which has the same effect as running DW, but is probably faster and doesn't cost $99.

My imac is not recognizing any external dvd writer drive. I have imac with Core i7 and Mac OS 10.6.8. I have tried external dvd writers from Samsung and Amazon Essentials but the computer does not recognize any of them. Which Dvd writer is compatible?

My imac is not recognizing any external dvd writer drive. I have imac with Core i7 and Mac OS 10.6.8. I have tried external dvd writers from Samsung and Amazon Essentials but the computer does not recognize any of them. Which Dvd writer is compatible?

I have an external firewire burner; it never shows on the desktop unless I insert a CD or DVD - that icon will then show (if I have my preferences set to show those on the desktop). Hae you checked in Disk Utility (Applications > Utilities) to see if it is listed under drives?

OS X Disk Utility not recognizing Seagate 3TB drive in dock

Model Nhjgjhgjhgh
OS X Disk Utility not recognizing Seagate 3TB drive in dock
Been scouring the webs and can't quite figure this one out.
I just purchased a Seagate 3TB drive intending on using it for Backup.
Ended up plugging it into a dock and couldn't get it to show up in Disk Utility..
Interesting enough, I plugged this into an HP laptop and it displays just fine.
Anyone know the solution?
OS X 10.10 Yosemite, MacBook Pro (Retina, 15-inch, Early 2013)
Hardware Overview:
Model Name: MacBook Pro
Model Identifier: MacBookPro10,1
Processor Name: Intel Core i7
Processor Speed: 2.6 GHz
Number of Processors: 1
Total Number of Cores: 4
L2 Cache (per Core): 256 KB
L3 Cache: 6 MB
Memory: 16 GB
Boot ROM Version: MBP101.00EE.B05
SMC Version (system): 2.3f36

I hooked my internal as an external up to my Mom's Macbook Pro and it recognized my HD. I'm thinking it is something internal with the hook-up, which is awesome, because maybe I can actually fix it!!!! Any thoughts?

Why did my Mac stop recognizing the external drive?

My Mac suddenly stopped recognizing the external drive when I try to back up through time capsule. It is on and plugged in. What is the problem? what can I do to correct it?

See if the Mac can access the device directly; not via Time Machine. Try the (presumably) USB device on a different computer, and also try a different USB storage device on the Mac, and try different USB ports on the Mac. Also unplug all other USB devices and hubs, and connect the device directly to the Mac. If the USB device has an optional external power supply, try using that. Basically, try different combinations and see if the Mac or the USB cable or the USB device is the most likely source of the problem.

Firewire ports not responding to external drives.

I have a LaCie 250 gig and it was working fine until I plugged a power book into one of the firewire ports. Not only did my G4 not recognize the power book, it also stopped recognizing my external drive.
The .mac site said to unplug everything and restart the computer to reset the firewire ports. Which I did and nothing changed. Figured it was a lost cause so I used the USB instead.
Then, one day, I tried it again to see what would happen and it worked. The firewire went back to normal and everything was fine.
The other day, I plugged my Canon XL2 into the firewire port and it shut everything down again. So, now I'm without firewire and back to USB for my external drive.
The firewire DOES turn on the drive, it just doesn't recognize that there's anything plugged in.
Thoughts?

1. Shut-down your Mac, and unplug the power cord
2. Turn the power off on your external FireWire devices
3. Unplug the FireWire devices from the Mac
4. Wait for 5 min.
5. Plug the power cord to your Mac only
6. For PPC Macs: Restart the Mac while holding the Option-Apple-O-F, and keep holding until you get the ">" prompt, then release the keys
7. At the ">" prompt type:
      reset-nvram and hit the Return key
      set-defaults and hit the Return key
      reset-all and hit the Return key
the last command will restart your mac
8. Shut down your Mac
9. Connect all your FireWire devices to the Mac and turn them on
10. Restart your Mac.
All your FireWire devices should reapear, if not repeat the procedure
How to avoid the issue :
The only really proven way to avoid burning up a FireWire port is to connect all devices and to turn them on PRIOR turning on the Mac. Likely, one must unplug them and turn them off AFTER the Mac has been turned off. If you need to connect another device, then you're on for a shutdown of your machine...  It's a tad annoying but it guarantees that the FW ports won't be damaged.  Be careful when using self powered devices such as webcams, iPods, hard drives or hubs, as they can destroy the port pretty easily. Another thing is to avoid daisy-chaining hard drives.
When the FW port doesn't respond anymore :
In this case, peripherals won't be mounted upon plugging, and won't be displayed in Apple's System Profiler. The self powered devices will still be fed by the port, but won't respond either.  It happens that the PHY just hangs after a surge or a random problem. Once hung, the port will not respond any longer, it is possible to reset the component by going through the following steps :
1° boot the PPC mac in Open Firmware by holding [ Apple key - Option - O - F ] after the startup chime.  2° you'll get to a command prompt. the keyboard mapping will be QWERTY, so pay attention when you type the following :  RESET-NVRAM (enter)  RESET-ALL (enter)  3° Now the mac should restart itself and the port should function properly again.  If it still doesn't work, then it means that the PHY is damaged.
http://www.hardmac.com/articles/16/
From Kappy post:
922 is only used in dual drive cases to provide a "build-in firmware RAID support"
912 or 912+ is FW800, the "+" means USB2
911 is FW400
924 adds eSATA support along with FW400/800
MacSales, OWC Tech Support library is where I would go first, as they do tend to have or links to, firmware updates for Oxford.
From Wiebetech:
I just upgraded my Mac OS, and now I'm having trouble with my FireWire device. What can I do?
A: With nearly every OS update Apple releases, some external drives are not recognized after the update. The typical symptom is that the device will not mount but the volume is visible and grayed out in Disk Utility. This means that the device is working properly, but the OS does not recognize the volume as mountable. Sometimes the drive does not show up at all.
The first thing to do is to see if repairing Permissions with Apple's Disk Utility First Aid feature solves the problem. If not, try repairing the disk with First Aid. Another possible solution is to zap the PRAM. This is done with a keyboard command while rebooting. Restart your computer and hold down the Command, Option, P and R keys. Consult the Apple web site for details.
If this does not work, then try pushing the PMMU reset button on the logic board. Consult the Apple web site for locations of the button for your Mac. If the drive still does not show up, shut down, disconnect all peripheral devices, and boot from the Mac OS Installation CD. The later the OS version, the better. Do not reinstall the OS, but when the Installer is loaded up and ready to begin, go to the File menu and use the Disk Utility program. Connect the drive that is having problems, then start the Disk Utility application. If you see the external drive and it is not grayed out, you know the drive is okay. Run Disk First Aid on it anyway. Then run it on your internal boot drive while you are at it. When done, unmount the external drive and UNPLUG it! Then restart the Mac.
When the Mac has restarted and is running on the internal boot drive, reconnect the external drive.

Aio Remote: PDFs not recognized by Google drive.

Aio Remote on iPad Air2 iOS 8.1.1 - I created a PDF on my iPad from my HP Envy 7640 using Aio remote app. In the files/document section it's there (3 pages) as a PDF. But when I upload a copy from Aio Remote to Google Drive it's not recognized by Google Drive as a PDF even though it has a PDF extention. I have other PDF files stored in Google drive that are perfectly fine. It must be something in your app that is the problem.

More info: if I send it from Aio remote as an email attachment to myself I get a PDF that I can upload to Google drive and Google drive reconizes it as a PDF. again proving it is Aio remote that is doing some thing wrong when uploading to Google Drive.

ITunes are not seeing my external drive as the library

Hi, I'm struggling to get music on my iPhone.
All our music is stored on an external hard drive that we use with our iPods. My wife and I recently got iPhones and we're trying to put some music on them.
iTunes is setup to get the music from the hard drive but for some reason I can not access it any more. My problem is that iTunes are not seeing my external drive as the library.
Here's how I've set my iTunes up:
Edit - Preferences - Advance
iTunes media folder location: J:\Lacie_iTunes (that's where the music is stored)
Now this worked perfect with our iPods but for some reason iTunes is not seeing the music anymore.
In iTunes, if I click on Library and then Music all I get is a screen to either download music (with tutorials) or import CD's (with tutorials).
I'm using iTunes 9 and Windows 7, the iTunes version on my wife's laptop is an older version but I do not think that that is the problem.
Any advice would be MUCH appreciated!

Setting the iTunes Media folder in preferences only moves the content to the external drive. The library database files will still be at the default location of ...\My Documents\My Music\iTunes. When you move the portable drive from one machine to the other you'll have access to the content, but not the database hence you get an empty library and the prompt to add some content.
See this recent post for pointers on how to rearrange the database & media folders so that everything is truly portable. I don't have time just now to rewrite the instructions for your specific drive & folder names but if it's not clear I'll pop by later and write them out again.
tt2

Spotlight not working with External Drive (Wireless)

I have setup the new Airport Extreme (AE) and connected WD 500GB via USB to the (AE). Spotlight does not recognize the external drive when it is connected to the AE. It will of course work if I directly attach external drive to my Macbook Pro. Any ideas on how to get Spotlight to "see" and index this external drive. Thanks.

I was able to get my Airport disk working using the following Terminal command:
sudo mdutil -i on /Volumes/Maxtor\ HD
Replace Maxtor HD with the name of your HD. (The slash indicates a non-breaking space.)
It took awhile and then it started indexing.
J

Will all my files be saved on my Mac after I upgrade? Because I do not have an external drive.

Will all my files be saved on my Mac when I upgrade? Because I do not have an external drive.

Upgrading should not damage your content, however, it is strongly recommended that you make a current backup on an external drive just in case something goes wrong. I have never had to use a restore but always have a backup just in case.

My computer is not recognizing the e drive. it won't read the disc or open the drive.

My computer is not recognizing the E drive. It won't read a CD and it the drive will not open so I can remove the disc. The E drive is not showing up under My Computer
HP Pavillion dv6000 Windows 7 64-bit

When did it started? is it showing under device manager?
you can try system restore first and go back to the date when your notebook is still working fine...
or you can try this...
hope this helps...
~reikableu~
...KUDO's to me and if this resolves the issue, please tag this as "AcceptedSolution"
~I MAYBE working for HP Consumer Notebook Support but any opinion stated are not at anyways connected to those of HP.~

Time capsule not recognizing Toshiba external hard drive

I have a new time capsule unit. it is up and running and works great. I bought a Toshiba 1TB external drive and plugged into the usb port on time capsule. I restarted Time capsule and it does not show up on my Macbook air anywhere (just bought this week). i plugged the Toshiba directly into the Mac Book and it recognizes it just fine, but not recognizing through Time capsule. Please help!
thanks!

Is the Toshiba drive formatted HFS+ without guid partition. If not redo the format.
Not all USB devices are recognised on the TC.. you sometimes have to use a powered hub. even though the hard disk is powered.. even then there can be usb chips the TC is not able to recognise as it has a limited number of drivers.

Mac not recognizing USB external hard drive

My Mac OS X 10.5.8 isn't recognizing my Samsung USB external hard drive. The hard drive has already been formatted for a Mac (rather than PC). My computer has recognized the external hard drive before with no problems. I've used it on a campus computer to copy video files from a documentary I was filming, and I've also used it on another campus computer to copy video files from a multimedia piece. I still need these files, so having to erase my hard drive would be DEVASTATING. Now, my computer won't recognize my external hard drive, even when I have it plugged in before turning on my computer.
When I go to Disk Utility, my mac recognizes it, but when I try to repair and verify it says that it failed.
It's also not a problem with the external hard drive because I've plugged it into another computer and it is recognized on the other computer.
What should I do?

When I go to Disk Utility, my mac recognizes it, but when I try to repair and verify it says that it failed.
Sounds like it's very badly damaged, and it may be too much to expect the data to still be intact. However, you can try repairing it with a more powerful utility, like [DiskWarrior|http://www.alsoft.com/DiskWarrior/index.html] or [TechTool Pro|http://www.micromat.com>. If neither of those can fix it, then your only options will be using a data recovery tool, such as [Data Rescue|http://www.prosofteng.com> or [File Salvage|http://subrosasoft.com/OSXSoftware/index.php?mainpage=product_info&productsid=1], or paying an expensive data recovery service to disassemble the drive and recover what they can.
Of course, this would all have been avoided if you had backups of your data. In the future, you must have a minimum of three copies of any data you don't want to lose.

Time Machine can not be mounted - external drive

I have an external Maxtor USB drive that's been my time machine since forever. Yesterday I noticed that it's not mounting. I KNOW it was mounting the day before because I had to use it. But now the drive is not mounting, and I don't know why.
The drive is on, the light is on, but it's not mounting. Out of curiosity, my husband hooked it up to his Vista PC and he was able to browse to it all dandy. But then back on my computer, it's not being recognized.
It's not showing up in disk utility, though my other external drive, my iphoto drive, is having no problems. It's not the USB port, as my ipod works on either port, as does my iphoto drive.
Can anyone help?
I've unplugged it, plugged it back in. Rebooted the computer without it attached.

I solved my problem. I tried plugging it into another computer and it popped up on the screen. AHA! Before I tried that, I had ONLY unplugged the drive but had NOT crawled under the desk to unplug it from the main power source. It just needed to be TOTALLY unplugged and left alone for a few minutes. Those little green men obviously can bunch up anywhere and need a total disconnect, for several minutes at least, to unbind. Ahh, sort of like un-constipating the system?
KC
Message was edited by: KCChoirgirl

No longer recognizing LaCie external drive.

I have been using a LaCie Quadra external drive to backup my files. Since the last system upgrade the external drive is no longer being recognized. I have followed the troubleshooting suggestions from the LaCie site i.e. checking with different cables. When I connect with the USB nothing is listed in system profile, however when using a firewire cable to connect both 400 and 800 system profiler lists "unknown device". When I run disk utility: repair disk it says the disc is OK. I have a tried all of the troubleshooting on my iBook which has the same system with same results. I have also tried a different LaCie Quadra drive which has not been used with same results, so have concluded there must be something in the system rather than hardware. Any suggestions about where to go from here?

I have also tried a different LaCie Quadra drive which has not been used with same results
I had a LaCie Quadra drive exhibit similar symptoms recently, and it turned out to be a bad power brick, even though the drive seemed to power up OK. When you tried replacing your LaCie drive with the other one, did you also use the other one's power adaptor?

Not recognizing my external drives

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