External Hard Drive not recognised on Intel but is on G4 iBook

Suddenly yesterday my iMac 5,1 running 10.6.8 stopped seeing the Time Machine External Hard Drive. The warning was that it had been disconnected not ejected properly,which I wasn't aware of. I couldn't afterwards get my iMac 7,1 running 10.9.2 to recognise it either. I tried Disk Utility verifying and repairing on both computers. Wouldn't finish, said needed backing up and re-formatting. It wouldn't erase on either because it couldn't be unmounted when it wasn't showing as mounted in the first place. Most of the data were backed up elsewhere and there was a recently used Time Machine I could put in its place.
Then I plugged it into my ancient G4 iBook running 10.4.11 and there it was on the screen with the contents accessible. I've tried verifying and repairing it there but either it's very slow or not really happening at all.
So what's going on? Ideally I'd like to copy the contents over to another drive but will have to get one first, then reformat somehow. I can imagine my G4 iBook will struggle with that. I've reconnected to the iMac 5,1 but it's still not showing there.

Well, this is embarrassing. A suggestion from an older thread on Macrumors.com called "Hard Drive does not appear in Finder / Desktop", solved this problem. Simply drag the missing drive icon from the desktop to Finder! Perseverance and different search wording AND reading a lot of stuff pays off.
If other's problem is not solved with this fix, you might benefit from this 10.5-based thread. They also mention an Apple 10.5 fix. Both URL's below.
The op's problem was that the drive did not appear in Finder OR the desktop but was operational. There was a lot of in-depth information with this fix embedded.
Thanks for the interest and suggestions.
Max
http://forums.macrumors.com/archive/index.php/t-209905.html
http://support.apple.com/kb/TA25203?viewlocale=en_US

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External Hard Drives not recognised

I have a few different external hard drives on which I have stored photos and movies etc. I used to keep them attached and on all the time, but decided some time back it might be better to leave them off until required. I now have OSX 10.5.8 on my Mac Pro and Macbook Pro and neither will recognise my external hard drives. 1 is a LaCie and the other a iOmega.
Have tried a reboot on both machines with the drives switch on, and off, disconnected and re-connected cables, nothing works, they just don't appear!
Any ideas?
Thanks
Douglas

Maybe the following will help....
Thought you could use this info about getting FireWire to work!
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 didn't 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.
If that still didn't 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 PRAM battery can cause FireWire to not be recognized, so make sure it's good! Also, here is Apple KB HT1317 on getting FireWire to work.
Here's another Fw Faq.
DALE

Hp external hard drive not recognised hp by pc

I have had my HP PC for some time and had never completed a back up so purchased a HP external harddrive. Part-way through the backup process (an hour or so later) the pc displayed a "backup failed" message.
I have since attempted to connect the external HP 500GB passport harddrive to my HP pc and also to other PC's and Laptops in the house, however, eventhough the light comes on the external hardrive once connected to a PC it is not indicating that it is attached the the computer and the drive is not discoverabale.
The external harddrive is useless in its current state and can not be used for anything, and I have yet to successfully complete a backup of my PC. Do I need to buy another external hardrive and start again? and what can I do with the original harddrive so it is recognised by a PC?

I understand your HP external hard drive is not working on any PC you connect it to. If I understand correctly, the drive is not listed in Computer where other drives are listed.
With the drive connected, go to Start>right-click computer>manage. Select disk management on the left of the new window that opens. Disk management will have a list of detected drives and a visual diagram of the detected drives as well. If possible, please upload a screenshot of disk management. Screenshots can be added by clicking the photo icon and browsing for it on the PC.
What model is the external HDD?
Has a different USB cable been tried? The cable might be providing a good connection for power, but not necessarily for the data connection as these two functions rely on different pins. Just don't want to overlook something as simple as a faulty cable. If you don't have one to try with, then don't buy one just yet as I would like to see what disk management shows.
I'll keep an eye out for your reply.
↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

Lacie External Hard Drive not recognized on Mac but recognized on PC

I just got both a MacBook Pro and a LaCie 1TB Rugged Safe External Hard Drive just a few days ago. I just plugged in my external and I installed the needed software from the drive, restarted and the drive wasn't found in LaCie Safe Manager. I tried restarting the computer without the drive plugged in, with Firewire and USB, and then I even tried it on my PC -- which it worked on there. I was able to make an account onto the drive and put my finger prints and everything on the drive, but when I came back to the Mac it didn't work at all.
I can't say it's the drive itself because it worked on the PC. I don't Tried the Disk Utility and it's showing "999.91 GB LaCie" and then "NO NAME" under it, but tabed over.
And help/suggestions?

Thanks for the ideas, JaEvo and Paul Cuciti.
EDIT: I tried this, http://vimeo.com/7539772. I did this on the Mac but I still don't have anything. I tried both USB and Firewire. I have power to the drive because, after I swipe my fingerprint, the red blinking light turns steady green. Also, I don't know if Macs make a sound when something is connected to the computer, kinda like a PC, but mine doesn't make a noise when I connect in the drive -- I don't know if that'll help anything or not.

External Hard Drive not recognised after horrible crash and reformat.

There's yet another problem with my MBP.
First of all this happened: http://discussions.apple.com/thread.jspa?threadID=969838&tstart=0
Since I got it fixed I bought a 500GB Freecom external Hard-drive and used it to back up all my stuff. It was a case of plugging it into the USB port and it mounted on the desktop. I've had it for about a month.
I've only just got my MBP back from getting the keyboard replaced, then on Saturday night it crashed. And kept crashing. Then it wouldn't boot. Then it crashed when booting. Then it took me to a command prompt. I reset all the parameters laid out in the troubleshooting guide. I managed to boot in safe mode, but my Freecom drive wouldn't mount anymore. But it kept crashing and crashing. I finally managed to boot from the installation CD and I reformatted the drive and installed OS X (Tiger) afresh. But now my Freecom drive won't show up on the desktop at all!
I ran a Hard Ware test after the reformat, and the code 4MEM/2/40000000 came up, then again, 1FCA8574, then 41530574.
When I had the Freecom plugged in it would show in System profiler but not mounted on the desktop.
What is wrong? I am really annoyed because my Warranty ran out yesterday and I'm only after getting it back from Apple to get the keyboard replaced!
Please help!
(PS - I have Leopard on its way to me, would installing this help?)

(PS - I have Leopard on its way to me, would installing this help?)
Not likely with all the bugs and issues going on with it...

External hard drive not recognised after using disk utility to format

i formatted two external hard drives using disk utility on my mac mini, now they do not show in finder. they can be seen in disk utility but the repair options etc are greyed out?

Try http://pondini.org/OSX/DU1.html
Allan

External hard drive not recognised in OS X Mavericks

For years I have used a Samsung HX 1Tb external hard drive under OSX Snow Leopard with absolutely no problem.
Since I upgraded to the free (improved?!?) OSX Mavericks my Macbook Pro cannot "see" my hard drive. All I get when I plug it in is the following message -
I've been told that this means my MacBook thinks that the hard drive is formatted for windows - but why should it work OK under SnowLeopard but not with Mavericks?
What can I do about it? I don't want to simply reformat the external drive because I'll lose all the files stored on it.
Is there suitable software/Apps that I can use to let my Mac access this external hard drive.
Incidentally my partners new Macbook Air can still read this hard drive.
?Puzzled?

NTFS with read/write is not supported on Mac OS - NTFS-3G it is actually a third party extension to adds read/write support for NTFS volumes. The OS never had this feature.
This used to be done with MacFUSE, but now the project for 10.9 is OSXFuse…
http://osxfuse.github.io
You should uninstall MacFUSE & then install OSXFuse…
https://code.google.com/p/macfuse/wiki/FAQ (see the uninstall notes).
You may also need to remove ntfs-3g and install the version for OSXFuse
https://github.com/osxfuse/osxfuse/wiki/NTFS-3G

External hard drive not visible in Finder, but is operating

iMac, 2 Gb RAM, Snow Leopard 10.6.4.
It has 4 external USB drives attached through a powered hub. All of a sudden, after about a year, one of them no longer shows up in ‘Finder’. However, all four drives have an icon on the desktop. The drive is visible and verifiable in ‘Disk Utility’. Double clicking the desktop icon opens the drive and I can copy a file from it. iTunes can see it. From a Macbook’s ‘Finder’, over WiFi, I can see and copy files to and from the drive. Finder Preferences shows nothing amiss. I’ve shut down and restarted the iMac several times with no change. The drive just does not show up in Finder on the host iMac.
Searching this forum has not helped. Any suggestions?
Max

Well, this is embarrassing. A suggestion from an older thread on Macrumors.com called "Hard Drive does not appear in Finder / Desktop", solved this problem. Simply drag the missing drive icon from the desktop to Finder! Perseverance and different search wording AND reading a lot of stuff pays off.
If other's problem is not solved with this fix, you might benefit from this 10.5-based thread. They also mention an Apple 10.5 fix. Both URL's below.
The op's problem was that the drive did not appear in Finder OR the desktop but was operational. There was a lot of in-depth information with this fix embedded.
Thanks for the interest and suggestions.
Max
http://forums.macrumors.com/archive/index.php/t-209905.html
http://support.apple.com/kb/TA25203?viewlocale=en_US

External hard drive not recognised in start up options

Hi! I'm struggling to get to grips with creating a bootable external drive - any advice would be very welcome!
I've recently bought a LaCie Triple Interface 300GB external drive to use for backup storage and to use as a back up bootable drive should disaster strike. It's connected to my Mac via the FireWire 800 port.
I've backed up my documents and cloned system folders and apps using Intego Backup, but the drive is not recognised in the start up options of the system preferences, nor does it appear as a bootable drive when I option-restart.
Do I need to format and partition the drive before it will be recognised as a bootable drive? (I haven't done so) Or have I just cloned the wrong thing?! I'm not entirely sure what I need to clone to be able to boot and back up from it. Should I clone the entire HD?
Or does it sound like something else entirely?
Can anyone help??
1.8 GHz PowerPC G5 6.5MB RAM Mac OS X (10.2.x)

I'm not familar with Intego Backup. Get Carbon Copy Cloner and use it to clone your entire drive, user files and all.Be sure to check the "make bootable" box before you start the process. Could be that Intego isn't capable of making a drive bootable.

External hard drive not mounting

external hard drive not mounting

I fixed mine by uninstalling the software that came with the harddrive such as Tuxera and reinstalled it now myharddrive works again and i did not have to delete the harddrive and reformat it.
I tried a lot like reseting the Pram And connecting other harddrives but by unstalling the original software it works all over again. I hope this works for you because i was getting pretty frustrated myself.
Im running a 2012 macbook pro with 10.9.3
boom mind blown

I can't import my movies to work on them. They are coming from a external hard drive, not directly from the camera, its type mpeg-e (.mts)

My movies are type MPEG-2
I can't import my movies to work on them. They are coming from a external hard drive, not directly from the camera, its type mpeg-2 (.mts)
What can I do ?

1. Is your external HD connected by firewire?
2. mpeg2 is the final compressed delivery format of a DVD, not intended for editing, and iMovie cannot handle such files, so you need to convert them first:
For that you need mpegStreamclip:
http://www.apple.com/downloads/macosx/video/mpegstreamclip.html
which is free, but you must also have the Apple mpeg2 plugin :
http://www.apple.com/quicktime/mpeg2/
which is a mere $20.

I recently received a WD My Book Studio external Hard drive and am installing it but can't figure out what the difference between wd turbo installer 64 and wd turbo installer is. Can someone tell me. Thanks in advance for all your help.

I recently received a WD My Book Studio external Hard drive and am installing it but can't figure out what the difference between wd turbo installer 64 and wd turbo installer is. Can someone tell me. Thanks in advance for all your help.

Oh ok, well that was what the test said prior to reformatting the hard drive. Now, it doesn't find any trouble no matter how many times I run it. That's what has me so confused, everything seems to check out and yet...I can't do anything, not even install the software!

I am planning on using my time capsule as a network and essentially an external hard drive - not just back up, is this ok?

I am planning on using my time capsule as a network and essentially an external hard drive - not just back up, is this ok?

Most users should use the Time Capsule for backups. This assumes that "original" copies of your data are on the computer and backups of this data are stored on the Time Capsule.
If either the Time Capsule or the hard drive on your computer fails, there are at least copies of your important data on the other drive.
If you are asking if you can place "original" files on the Time Capsule, do you have a plan to backup those files?
If the Time Capsule drive has a problem....and your only copy of your important data is on the Time Capsule....you will lose everything.
If you are asking if this is OK, the answer for most folks would be "no".
Can you clarify if this is what you are asking?

I connected a external hard drive to the Time capsule but I can't get it to connect, I connected a external hard drive to the Time capsule but I can't get it to connect

I connected an external hard drive to the Time Capsule but can't get it to work.

And are you using a powered USB hub? The USB port on the Time Capsule is under powered, so you almost always need to use a powered USB hub, even if the hard drive has its own power supply.

External Hard Disk not accessible in Finder, but OK in Disk Utility

My external hard drive suddenly disappeared from Finder, but is still there for the disk utility. I connected this Firewire drive to anouther Mac, and it couldn't find it either. I then copied a disk image of this external drive the system hard drive, and that disk image is also invisible. How do I get back my 89 gigabytes of data, which is still there? The disk needed no repairs, and my permissions on the system disk are OK.
G5 Mac OS X (10.4.6)
G5 Mac OS X (10.4.6)

My external hard drive suddenly disappeared from
Finder, but is still there for the disk utility. I
connected this Firewire drive to anouther Mac, and it
couldn't find it either. I then copied a disk image
of this external drive the system hard drive, and
that disk image is also invisible. How do I get back
my 89 gigabytes of data, which is still there? The
disk needed no repairs, and my permissions on the
system disk are OK.
G5
Mac OS X (10.4.6)
G5 Mac OS X (10.4.6)
Well, I got the terminal utility to work alright, but the disk name, Extra 80 GB, which the program correctly lists, then won't work with the chown command. It picks up the Extra, then the 80, then the GB, and thinks they are all separate names, and then can't find any of them.
I thought I was there .........

External Hard Drive not recognised on Intel but is on G4 iBook

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