My G-Drive 4 TB external drive is suddenly not appearing on my desktop!

The external drive is also not showing up in Disk Utility. Any suggestions?

Check the drive’s connections, including the cable used to plug it into the computer. If it’s connected properly, it’s probably dead.
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Folders that I copy from my Macbook to my External Hard Disk does NOT appear on any other drive that I connect the Hard disk to (TV, PC, ... etc.)

I'm facing a bit of a problem.
Any folder I copy from my Macbook Pro to my External Hard Disk does NOT appear on any other device that I connect the Hard Disk to (TV, PC, etc).
The Hard disk format is "MS-DOS (FAT)".
The folders that are copied from Macbook appear when I connect the Hard Disk to my Macbook only, yet, the folders that I copy from a PC to the Hard Disk appear on Macbook, PC, and TV and are also available from editing from both Mac and PC.
I was advised to install "Paragon" software and I did but I'm not sure how to use it to convert the folders on the hard drive to any format that can be read on other drives or devices (NTFS or otherwise).
I'd appreciate some help. Thank you.

Hi Simon. How is it formatted, FAT or NTFS?
I only ask as OSX will only read NTFS partitions unless you install an App such as Paragon NTFS or Tuxera NTFS.

Two external hard drive are not appearing on the desktop anymore on my 2008 24" iMac. One is a Lacie d2 Quadra and the other is a G Drive. Both are 1 Tb

Two external hard drive are not appearing on the desktop anymore on my 2008 24" iMac. One is a Lacie d2 Quadra and the other is a G Drive. Both are 1 Tb

Are they daisy chained? Have you tried them one at a time? Have you tried a different FireWire cable? Do they show up in either system profiler or Disk Utility? Have you reset the SMC? http://support.apple.com/kb/HT3964

I have a MacBook Pro. When I go to system preference, the external speakers option does not appear in the Input tab. Help?

I have a MacBook Pro. When I go to system preferences, the external speakers option does not appear on the input tab and, of course, the external speakers do not work. Help?

When you plug headphones in, or external speakers, where it states "internal speakers", it will rename that "headphones", say. Unless you are running an external sound card.

External Hard Drive (Seagate) does not appear

I recently updated to the new Maverics 10.9.2 and now my external hard drive does not show up in finder, or on my desktop. I have looked using disk utility and disk drill and nothing appears. I was wondering how I could get the information back from the disk. I have tried plugging this hard drive into other macs and it will not appear. Someone please help, I have all of my documents and media on this hard drive, I cannot lose it.

Either the Connecting unit is broken or the disk itself.
You can try to open the hoousing usally with 4 screws and put another hdd in and see if that one will be recognised if this is the case Your disk is messed up .
You should not rely on single external hard drives really.

Hard drive does not appear on the Desktop

Hard drive does not appear on desktop. Can only be found in the applications folder.

Go to Finder -> Preferences, click the General icon, make sure the appropriate box is checked.

Why would the Firewire Port and/or External DVD-RW suddenly not work?

Hi, it's me again. I swear, I must be destined to just use Windows machines...
Anyways, I have a used/refurbished iBook G3 500MHz 320MB RAM Dual USB (1 Firewire)laptop running OS 10.2.8 that I bought a few months ago. I went and purchased an external Firewire/USB 2.0 DVD-RW drive as I only had a CD-ROM drive on my machine and I wanted the option to burn CD's or watch/read data from DVD's (I know that with my slow processor writing DVD's -other than data- would be a stretch and have other machines to do that with anyways so it wasn't a concern really). I received it and installed it, also installed the free version of Toast that came with it, and the drive worked fine. I have not needed to use the drive since then and have not used the laptop much at all since then really, but I do need to say that I did end up adding a new user account, though I can't remember if I changed the original Admin account and then still have the one I created myself when I first started the laptop after I bought it (had a fresh install of Jaguar on it, but I have no disk to re-install with if needed) or if I created a separate (new) account and ended up deleting the Original Admin accout (I know in Windows, you cannot delete the original Admin account but I do not know if that is the same for OSX or not). I did this as I wanted a master Admin account that I just wouldn't really use and then wanted the other as my main account (and use it to connect to my home windows network) and for some reason it would not let me put a check in the box to allow that account to do so (from either Apple or my user accounts) and so I know that my main user account now is set up to allow it (was it the old Apple user account or a new one, I can't remember- sorry).
Ok, so that is the back story to my problem, which happens to be this:
I just bought a new chip of RAM (512MB to make it a machine with 576MB RAM total) and as I had been looking at getting OSX Tiger (but didn't want to do it without the extra ram and had been considering Panther instead as well), I thought it was necessary if I wanted to not bog down my machine. I bought the Install Disks on DVD for Panther, as well as an upgrade disk (DVD again) for Tiger, therefore letting me use the External Firewire DVD-RW to install Panther, and if I liked I could go ahead and upgrade to Tiger (and if I didn't like it too much, or it slowed things down too much etc, then I could always go back to panther and have both available for future options). The extra RAM coming in handy here definitely.
So I was going to install the RAM today, and decided to go ahead and test out the External DVD to make sure it could boot from it (before making any changes to my system) and then go and install the RAM, and after that, install Panther to start... But I plugged all the cords and cables in, used my laptop with AC power even, and I could not get the External to show up at all... (kinda like the very current post right below mine but for the G4- it worked before, but now the firewire External just does not show up).
I only have USB 1.1 on this laptop obviously, and I don't even know if you could do a boot from an external with USB 2.0 if my laptop had it (the DVD player does). I was recommended to boot with an external firewire DVD or firewire to another machine with DVD capabilities to do the install. So my problem right now is getting slightly bigger, as of course, I can't seem to momentarily find the stuff that came with the External (spare USB cable to check and see if the laptop will recognize it at least with that and to show it is the firewire that is not working properly, or the disk that I used to install it -might have been only used to install Toast free version if it didn't need any drivers, but I don't know where that or the instructions for installation sheet currently is -- I am looking for it, but I have switched bedrooms just last week and I also seem to be missing a few other Windows laptop disks as well so there is a good chance that they are all together, I just need to figure out where, heh.)
I am waiting currently before installing the memory, though if I don't get the External working tonight, I may go ahead and do it first as at least I will have more memory on my laptop then, until I can get other stuff functioning and be able to do the Panther install.
But my main question is, is there something that would cause an installed external to suddenly not show up in OSX? Since I hadn't used it since that one day, and it was unplugged from the laptop itself, would that end up doing it, or more likely, the changing of the user accounts (though I have been trying to test it with different types of media and through both of my user account (which are both "admin" ones), though I do still have one of those being an account that was on there when the External DVD was first installed, so it really shouldn't have done this at all (one would think). So how big of a chance is it that the firewire has somehow gone dead and this is the main culprit to my wasting the past 4 hours on this???
I am currently scavenging around for an extra USB cable to try and test the External that way and will post the results when I can... I love the look and idea of macs, now I have a mac and want to upgrade it even, but why is it that whenever I attempt to use it after having not used it for a bit (and try to make the iBook feel better by using it more as I am sure it feels sad and alone sitting on the shelf while my Windows Laptop gets more attention), or try to fix it when it can be made better (and therefore used more often), the mac (all macs really), just seem to get all pissy and cause problems and make me spend hours upon hours trying to get things to work again??? You have to admit it, I am "mac cursed"... sigh I can program in 4 or 5 computer languages and am very advanced at many tech things (the ones I am not as good at I am still usually Average or Medium skilled) so it makes me wonder why I have so many tech problems with Macs when they are supposed to be the "easy" OS to use...

Actually, I think I have it all working now. After going back to the Plextor Website, I found out that the switch between the USB and 1394 ports only gets activated (switched over to the other) with you turn the device off first, move the switch and then turn it back on. I was sure that I had done this with the ibook, but maybe not as when I went back and did it with first the USB and then the Firewire cables, it did work. I definitely knew that I had not done this with the Windows laptop, the reason it would not have the USB work for me on it.
but back to the iBook, I was confused as it was only showing up as a DVD-ROM (which I guess is what they do until you actually open up the burning software to then be able to burn to it), and it also had the wrong Model #, which after more research, showed that it was the Internal DVD drive model version (PX-708A) compared to the actual model version (PX-708UF) which is the USB/Firewire (External) model. The firmware was really out of date as well (from June 2004 I think, v1.06) and they had v1.12 from Spet/Oct 2006 available so I went to get that (which was a hassle). They had nice easy Windows self extractor/installer packs, and then the BIN files for use for all systems (Sun OS/ Mac OSX/ Mac OS/ Linux etc as well as usable for Windows), and those needed a special Firmware Updater Application which was OS specific. Only I had the hardest time trying to get the OSX one as it would send me to a FTP site and not give me any clues as to which file(s) I needed to get and the Mac OS version was just for older 9.2 or below versions and didn't want to install under the OS Classic mode.
I ended up using my windows computer which made it easier to view with the FTP stuff as I have FireFTP in Firefox, and downloaded the files I thought I needed (to test out), and then realized my silliness, and just downloaded (as well) the Windows Auto Extractor/Installer as the Firmware is the same for all OS's, just the way to install/update it was different... So I hooked the DVD drive to my PC and updated the firmware, checked it out on here before moving it back to the ibook, where I checked that it still worked and had the new update version showing, which it did, and now I have my fully working and newly updated drive ready for the OSX installations... I had attempted to update my Jaguar system as well while online, but it had no new updates available (I guess those were all mostly Tiger updates that were just recently released).
I am now off to install my additional RAM, and after checking that it all shows up correctly, I will go ahead and do the Panther Install (and test it out and see if I like it or not).
For anyone that currently uses Panther on any mac, are there still any major problems I should know about before hand, or know about things that they have mostly fixed (like the issues with Firewire ports and External Drives that they had around the time Panther was first released for example)???
Thanks to all that helped... I now know to attempt an "eject" of any external HD (which I do have one that I will setup to use after I get Panther on the ibook) or CD/DVD drive instead of just unplugging the USB/Firewire cable.

4EA3 external table default directory not appearing

In using SQL Developer 4 Early Adopter version 3, I was attempting to set up an External Table. I created the appropriate directory object, but it did not appear in the pulldown for default directory in the create External Table dialogue. I was able to proceed using SQL Developer 3.2. Once I created the table in SQL Developer 3.2, I was able to edit it in SQL Developer 4.

There is a bug here in that the Dialog for the default directory should not include default directory schema (which for me defaults to the connected one). As a workaround if you change that default directory schema to SYS in the drop down then you should see your directory.

I bought an external hard drive in June (this yr) and it suddenly stopped appearing on the desktop. Disk Utility could see it. It wasn't the cord - now that I've tried that, the ext won't even turn on. I need that data off the drive BADLY! Help!!??

The drive stopped showing up consistently at first, then stopped all together. Disk Utilities could see it, verify it but not repair. I need it backed up. I took it to a local computer shop who tried a different cord. Nothing. When I got home, I read through several support forums dealing with this issue. One said I needed to zap my PRAM on my MacBook. I did so. Now the external won't even turn on! Any hope of getting the data off that drive? It is still under warranty but undoubtedly the firm will NOT attempt to back up the drive before issuing a new one. I downloaded something called TestDisk 6 that another forum suggested but no one offered any clue how to use it. I cannot figure the first thing to do with it! It appears to may be a Windows formatted program, anyway as most of the instructions end in the suffix .exe. I'm at a total loss...both personally as well as having already lost a complete week of business. Any suggestions would be appreciated but please note - I am NOT that computer literate. Just telling me to download something won't help me if I can't figure out what to do once it is downloaded. Also, taking this hard drive apart will void my warranty. Not that that is the biggest of my worries at this point but I wouldn't have the first clue anyway! I live in an area where we have something called Mac Authority in the mall and a Best Buy. Those are the only 2 connections to Mac-related stuff I have access to. Help!!! Please?

If your external drive does not have an independent power supply, you may wish to consider a couple of lower-cost options before tossing the drive. Bus-powered drives have no external power source and must get all their power from the computer. They can exceed the computer's USB energy budget.
Cheapest option:
1 Meter USB 2.0 A to 5 Pin Mini B Cable - Auxiliary USB "Y" Power Design for external hard drives.
This gets power from two of the computers USB porst sna can provide enough power to wake up an under-performaing bus-powered drive.
If you don't have enough ports to use this, try the next cheapest option:
Newer Technology 7 Port Hi-Speed USB 2.0 Hub with Power Adapter for Mac & PC
Such a hub has a an independent power supply to make up for wahat the comptuer fails to provide.

My external drive has disappeared although i shows up in disc utility, and flash drives also do not appear. Any ideas? Have tried restarting but.....

My back-up has stopped as my external drive is shown as "not accessible" and has disappeared from Finder although it shows up in Disc Utility. Similarly my USB flash drive has disappeared. Restarting does not help! Any ideas?

That's good news but maybe run a Repair Disk on it anyway given that it has been somewhat unpredictable.
With Time Machine, one expert helper here named pondini has an extensive knowledge of that software and has prepared a lot of material on it. Here is a link to some of it.
http://pondini.org/TM/FAQ.html
http://pondini.org/TM/Troubleshooting.html

My external hard drive is not being recognized by my MAC Pro. The icon does not appear on my desktop when I connect it to the MAC.

My external hard drive that I use as a backup is not being recognizedc by my MAC PRO. Usually I get the icon for the backup, when I attach it to my computer, but that isn't happening. What can I do?

Well, I tried all of your suggestions and they didn't work -- no surprise because I was trying to backup to my external c.d. disk. Duh! The application for the home is in the mail.

My External Hard Drive is All of a Sudden Not Appearing in Finder. How Do I Fix This?

How do I fix this with my LaCie Rugged 500GB external hard drive? I connect to my MacBook Air, via USB 2.0. I have tried other ports and computers, but it still is not recognized by Finder. The USB ports on my computer work, because the drive is recognized in Disk Utility. However, nearly all of the options are unavailable in Disk Utility (see screenshot), and I am unsure as to what I should do.
Any help is much appreciated!
-William

You have tried selecting William's External and then choosing the Mount option in the toolbar?

My external hard drive is suddenly not recognized.

I have a thunderbolt enabled 1.5 Terabyte Seagate FreeAgent Go Drive. It was used as a simply external hard drive and then I added it to be used as a time machine location. After the first initial backup, it suddenly became no longer recognizeable. It does not apear in the finder, disk utility, or in the terminal when I ask for list of the Volumes. The drive light is on, I can hear the disk spinning, and it warms up as normal after being plugged in to the computer for a period of time. Still, I am unable to recognize the drive in any way.
Ideally, I would like to save the files if possible. If not possible, I'm happy to reformat the disk but this is not possible at this time with the drive being unrecognized by any means I am aware of.
Any help would be greatly appreciated.
I am using 2.3 GHZ i7 Retina MacBook Pro with 8GB RAM. I'm on 10.9.1.

Yes, exactly. It's very strange. I've never had this happen. Drives fail but then don't apear in the DiskUtility app. This drive is "there" but I cannot seem to preform any action on it. This is the type of response received (in Log) I get whenever I attempt any action:
Securely erasing data to prevent recovery failed.
2013-12-26 08:43:39 +0530: Erase complete.
2013-12-26 08:43:39 +0530:
2013-12-26 08:44:06 +0530:
          Name :           Seagate FreeAgent GoFlex Media
          Type :           Disk
          Partition Map Scheme :           Unformatted
          Disk Identifier :           disk1
          Media Name :           Seagate FreeAgent GoFlex Media
          Media Type :           Generic
          Connection Bus :           USB
          USB Serial Number :           NA0B3X6P
          Device Tree :           IODeviceTree:/PCI0@0/XHC1@14
          Writable :           Yes
          Ejectable :           Yes
          Location :           External
          Total Capacity :           1.5 TB (1,500,301,909,504 Bytes)
          Disk Number :           1
          Partition Number :           0
          S.M.A.R.T. Status :           Not Supported
2013-12-26 08:44:43 +0530: Preparing to partition disk: “Seagate FreeAgent GoFlex Media”
2013-12-26 08:44:43 +0530:           Partition Scheme: GUID Partition Table
2013-12-26 08:44:43 +0530:           1 partition will be created
2013-12-26 08:44:43 +0530:
2013-12-26 08:44:43 +0530:           Partition 1
2013-12-26 08:44:43 +0530:                     Name                    : “Untitled 1”
2013-12-26 08:44:43 +0530:                     Size                    : 1.5 TB
2013-12-26 08:44:43 +0530:                     File system          : Mac OS Extended (Journaled)
2013-12-26 08:44:43 +0530:
2013-12-26 08:44:43 +0530: Unmounting disk
2013-12-26 08:45:04 +0530: Partition failed for disk Seagate FreeAgent GoFlex Media Unable to write to the last block of the device.

My external hard drive and cd burner does not appear on the desktop of my mini. Using Firewire adapter from old to new firewire ports.

I have a new Mac Mini (2013) and older external hard drive (Lacie) and cd reader/burner (EzQuest). Both have the original Firewire ports and the Mini has the new kind. I bought a cable with both kinds of ends but I plug them in and they don't show on the desktop.

From what I've heard, sometimes certain devices will not have full functionality if they are FireWire 400 with an 800 adapter. Take Apple's original iSight external webcam. It had FireWire 400, and people report using a converter cable will give them video, but not audio.
When I first got my mini, my usb cd burner wasn't recognised by Finder or Disk Utility. After repairing disk permissions and a reboot, it worked fine.

External hard drive files suddenly not readable

This keeps happening to my hard drives for no apparent reason. I use an external drive to backup my macbook pro contents, eventually, I cannot open the files. I get an error message saying they may be damaged and their preview icon defaults back to the system original. The file is there, with the same file size but I cannot open them......
This happend with my time machine and 2 external drives. Disk rescue and similar programs do not work.
Any suggestions?

Hi Barry,
thanks for your answer! The hard disk with my time machine backups on it is the same hard disk I successfully used to migrate my "old" files (from the Leopoard installation) to the new Snow Leopard based system (through the migration process during the installtion). I expected that this time machine backups would be still available and that I could use the same external hard disk to resume the time machine backup on the new system. Hope this was understandable?
But I am still wondering how this could happen while it worked obviously fine during the installation itself.
I understand that I could just reformat but then my old backups would be gone
But probably this is the easiest solution.
Thanks! And: yes! I am from Munich (Germany

My G-Drive 4 TB external drive is suddenly not appearing on my desktop!

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