New To Mac-Forums?

Welcome to our community! Join the discussion today by registering your FREE account. If you have any problems with the registration process, please contact us!

Get your questions answered by community gurus Advice and insight from world-class Apple enthusiasts Exclusive access to members-only contests, giveaways and deals

Join today!

Start a Discussion

Mac-Forums Brief

Subscribe to Mac-Forums Brief to receive special offers from Mac-Forums partners and sponsors

Join the conversation RSS
OS X - Operating System General OS operation information and support

OS 10.4 - External hard drive not recognized

Post Reply New Thread Subscribe

Thread Tools

Member Since: Jun 27, 2007
Posts: 1
paeoniflora is on a distinguished road

paeoniflora is offline
This is one of those situations when it was working one second and literally not working the next, it seems like. I had my external HD plugged in via firewire on my Macbook when a system update popped up. Went ahead and installed that, (now running 10.4.10), as soon as the computer booted back up I am unable to recognize the hard drive. Tried restarting the hard drive, restarting the macbook... It recognizes the USB ports (iPod will pop up in Finder when plugged in) but unfortunately I don't have a compatible USB cable for the drive. Plugged the drive into my Windows machine and it works fine. Plugging it back onto OSX and nada. The drive is cross platform compatible, so I'm fairly certain it's not a formatting issue (I've switched back in forth between the two systems with the HD before), but right now I'm all out of ideas. Repairing disk permissions also did not seem to solve anything. Anyone know how to go about dealing with this?

Thanks a bunch.
QUOTE Thanks

baggss's Avatar
Member Since: Oct 10, 2004
Location: Margaritaville
Posts: 10,310
baggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond reputebaggss has a reputation beyond repute
Mac Specs: 27" 3.4 Ghz i7 iMac-13" C2D Macbook-OSX 10.10.2 -64Gb iPad 2-64 Gb iPhone 6+-ATV 2-14Tb of Storage

baggss is offline
When you open disc utility on the Mac, does the drive show up there? If so, can you mount it?

QUOTE Thanks

shahvikram123's Avatar
Member Since: Nov 16, 2006
Location: UK, London
Posts: 637
shahvikram123 will become famous soon enough
Mac Specs: 13 inch Macbook Pro Retina, 2.7ghz, 128gb SSD

shahvikram123 is offline
I had the same problem, and this seems to only happend when you disconnect the USB or Firewire from your macbook without ejecting the drive first. I just left the external hard drive plugged in for about 10 minutes and it eventually mounted.

Someone told me that it takes that long because it has to verify that no data was damaged when you removed the USB or firewire connecting without ejecting it first.

So just leave it plugged into your macbook for about 10 minutes perhaps and see if it mounts.

BTW when I left it in plugged in for the 10 minutes I found that if i opened disk utility that it ran extremely slow and I got that beach ball thing.
QUOTE Thanks

Member Since: Sep 25, 2009
Posts: 1
w1ll1am88 is on a distinguished road

w1ll1am88 is offline
Hi, I'm new here. I recently just had a problem with my external hard drive. It's a WD essential 1TB. My laptop couldn't recognized my hard drive. everytime i plug it in, a warning pop out saying that my hard drive not recognized, asking me to initialize, eject or ignore. when i check at the disk utility this is what happens. the infromation i get is all wrong.
I called the WD company, and they said that either i format it or replace but there are important files inside. I want to do data recovery but didn't know how. is it even possible to do data recovery by myself without sending the hard drive to data recovery company? What should i do to solve this problem? can any one help me?

Thank you.
Attached Images
File Type: png Picture 1.png (105.8 KB, 12 views)
QUOTE Thanks

Chilbear's Avatar
Member Since: Jun 14, 2007
Location: Toronto
Posts: 574
Chilbear is on a distinguished road
Mac Specs: 2xiMac24 w Parallels 6 (1x White, 1x Aluminum), iPhone 3GS with iOS5

Chilbear is offline
Your machine sees the drive but thinks it is unformatted.

First first thought would be to get a copy of Disk Warrior and hope it can rebuild the directory.

DiskWarrior 4

By any chance do you know any one with a Windows machine to see if XP or Vista can "see" the data?
QUOTE Thanks

Member Since: Jul 26, 2007
Posts: 4
djroue is on a distinguished road

djroue is offline
This problem sucks and happens to me all the time.

I use 10.4.11 and properly eject my harddrives from finder and still, this occurs. As a performer relying on a quick set up and break down with my MacBook Pro this has got to be the most frequent and annoying occurances from a technical aspect. I've resorted to the voodoo tricks and superstitions because the waiting game sucks and is hit or miss. I've done it all---replaced cables, restarted, switch from firewire to USB, waited for hours even though I properly eject everytime...all the tricks in the book. Now I just bring multiple identical harddrives in both Extended Journaled and FAT32 to my gigs and hope by shear numbers that one will boot up and show starts.

Please a solution.
QUOTE Thanks
Collin Bl

Collin Bl's Avatar
Member Since: Apr 07, 2009
Location: Napier NZ
Posts: 3,291
Collin Bl is a jewel in the roughCollin Bl is a jewel in the roughCollin Bl is a jewel in the rough
Mac Specs: 27 iMac i5, MBP 13 & iMac 20, 2TB dual TC, AppleTV, iPh4S

Collin Bl is offline
djroue - How about grabbing the install disc and powering on inserting disk and hold C key until it boots off the disk then go into menu and select Disk Utility and in that select the HD and repair permissions. Then shutdown and boot as normal and report back if problem still persists.
QUOTE Thanks

hughvane's Avatar
Member Since: May 18, 2008
Location: Banks Peninsula, New Zealand
Posts: 3,285
hughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nicehughvane is just really nice
Mac Specs: MacMini 2.4, 8 Gb, OS 10.10 and 10.6; MacBook 2.4, 4 Gb, OS 10.6.8

hughvane is offline
It's nearly always a disk format issue. Best advice I can offer is to extract essential files from the device via whatever computer is recognising the device, and then transfer it to a flash drive, or burn it to a CD (data).

Then, as Collin advises, check the HD setup via an OS install disk (*not* Disk Utilities from the installed HD OS). I'd do an immediate repair, because something is seriously wrong with some access sectors of the HD. [Disk Warrior is the best of the bunch btw.]

To cover several possible bases, what sort of OS updates have been carried out by respondents? The combo update seems to have sorted out a number of OS-related issues.
QUOTE Thanks

Post Reply New Thread Subscribe

« os querie regarding powermac g4. | OSX Command IDs »
Thread Tools

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off
Forum Jump

Similar Threads
Thread Starter
Last Post
External Hard Drive Problems Thaw Other Hardware and Peripherals 2 05-22-2007 08:57 AM
Upgrade hard drive or buy external? Scott R Apple Notebooks 12 03-13-2007 04:55 PM
DIY: Trick out your Intel Mini kaidomac Apple Desktops 53 02-17-2007 02:40 AM
External Hard Drive ajloring Schweb's Lounge 0 03-10-2006 09:50 AM
point movies folder to external hard drive hondagus87 Switcher Hangout 1 12-08-2005 03:33 PM

All times are GMT -4. The time now is 12:01 AM.

Powered by vBulletin
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.

Welcome to

Create your username to jump into the discussion!

New members like you have made this community the ultimate source for your Mac since 2003!

(4 digit year)

Already a member?