OS X V10.7 Lion :: External Drive File System No Longer Recognized
May 29, 2012
I backed up some movies for the kids onto an external drive (USB without power cord). Now when I plug it in, it does not even show up. If I try to look at it with the disk utility it sayd the file system is not recognised. Last time I accesed the disk was under leopard. Could it be that the change to lion has cut off access now?I do hear the disk start up when it plugs in and I have not seen any strange history with this disk before switching to Lion. (A drive of the same make but bigger and with power cord plus USB still works from before and after Lion). Small disk is Freecom 1TB (pocet size), Large disk is 2TB also Freecom but with powerfeed seperately.
Info:
iMac, Mac OS X (10.7.3)
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Apr 8, 2012
I installed a recovery copy of Lion on an external USB drive, and although it shows up as a potential startup disk in System Preferences, I can't boot from it. When I select it as the startup disk in System Preferences and reboot, I end up booting from the internal drive. When I hold down ALT when booting, I see the access light on the USB drive blink a few times, but it doesn't show up in the bootable volumes list.The following Knowledge Base article makes me think my problem is that I use the same volume for Time Machine backups: url...I suppose one option would be to partition the external drive, using one partition for backups and the other as a recovery drive. Would that work? Is that the only option?
Info:
MacBook Pro (17-inch 2.4 GHz), Mac OS X (10.7.3)
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Jul 2, 2009
Just a quick question regarding external hard drives.
Does it matter what file system the hard drive is set to for me to be able to transfer data between the uMBP and the hard drive?
Currently, my 1TB external hard drive is in NTFS, but i understand Mac use FAT32? (Please correct me if I'm wrong)
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Sep 7, 2009
I'm considering using dedicated internal drive for TimeMachine backups and an external drive for an additional backup of photos, videos. Wondering if there is an option for formatting an external drive with a file system that could be read by a PC so that I could transfer images or videos by simply plugging the external drive into the PC.
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May 2, 2012
I am trying to back-up my computer to my external hard drive and a box is popping up saying "You can't open the application WD Backup.app because PowerPC applications are no longer supported." What does this mean? I have updated my system to Lion since my last back-up. What do I need to do?
Info:
Mac OS X (10.5.6)
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Mar 28, 2012
Looking for help / ideas. I don't do this often, but placed a DVD in mac to watch a movie and it's not being recognized.
Info:
iMac, Mac OS X (10.7.3)
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Jun 11, 2012
I have the original Harman Kardon Soundsticks (USB connection) which have worked beautifully through every OS until 10.7; now my mini no longer recognizes them. I've tried the various remedies offered (unplug USB and/or power cables and reinsert) during the 10.6.8 occurence of the same issue (and I had no problem with that OS) to no avail.
Info:Mac Mini 2 Ghz Intel Core 2 Duo, Mac OS X (10.6.1)
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Apr 3, 2012
I got a new MacBook Pro with 10.7 (updated to 10.7.3 now). I'm running the printer through Airport Express's USB.It was working fine, but at some point, I'd get the interminable "Finding printer". I could be misremembering though,and maybe it never worked with 10.7, though I think it did!
I tried to deselect the printer driver and re-select. I stupidly deleted the driver (or perhaps just removed it from the Print & Scan window? and now I can't get it back again (via the HP site). The HP site maintains that the driver comes with 10.6 and I assume the same works with 10.7 -- is this a correct assumption.
[url]...
Info:MacBook Pro (15-inch Late 2011), Mac OS X (10.7.3)
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Aug 20, 2010
Awhile back I bought a 500 GB Seagate FreeAgent Go external hard drive to backup my 218 GB PC. I used the automatic backup software that came with it and it works fine. After all this I purchased a MacBook Pro and now, instead of buying another drive and also considering there's plenty of space on the one I already have, I was wondering if I could possibly partition half the drive to be used as a backup with Time Machine without touching the other half. I plugged in the drive to my Mac and opened Disk Utility. It says it is a NTFS file system (I suppose that's normal).
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May 24, 2012
I have a MacPro 1,1 with a 2 x 2.66GHz Dual-Core Intel Xeon and I just upgraded to OSX Lion 10.7.4. Upon upgrading my system stopped recognizing the two optical drives I had installed. Is there a patch or are there drivers that I can download to fix this? Has this happened to anyone else? I was prepared to lose access to some older software but not my optical drives!!!
When I do a "system report" through "About this mac" both of the drives are listed but they dont show up on my deskop. I have an Optiarc DVD RW AD-7170A and a TSSTcorp CDDVDW SH-S202N
Info:
Mac Pro, Mac OS X (10.7.4), 2 x 2.66 GHz Dual-Core Intel Xeon
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Mar 4, 2012
I have an Epson NX 510 printer that I have been able to print on easily up until a few weeks ago. I have upgraded my Macbook Pro to OS X Lion so I got new printer software and still my computer wouldn't recognize the printer all the time. Sometimes I can print and sometimes I can't. What can I do?
Info:
MacBook Pro, Mac OS X (10.7.3)
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Feb 17, 2012
If I encrypt an external drive using File Vault 2 (Lion 10.7.3) as a Time Machine backup from my current laptop, then later purchase a new laptop and attempt to read that encrypted backup, will there be any problems to consider?
1) I expect that, since the password will be stored on my current laptop, there would be a problem reading the password on a new laptop
2) I was told that opening a File Vault 2 encrypted external drive would require the same laptop, as the encryption creates a match of serial numbers between the laptop and the encrypted drive.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Dec 27, 2006
I'm having some troubles with an external enclosure and my sister's new imac. The enclosure I'm using is a Tao Tec 2500 (2.5" drive) IDE --> USB device with the Y-cable. The drive has been formatted to NTFS and has some files on it. As far as I can tell though the version of OSX the new imac is running should support read capability with the file system though. The computer is a latest generation imac (purchased about 12/20/2006) and running a new revision of OSX (about 1.0.4.7 I believe). My problem seems to be the computer simply does not recognize the drive. Disk utility doesn't see it nor the usb manager in system tools. The LED indicator on the drive indicates that it's receiving power and I've tried swapping the usb ports around just to be sure I don't have a bumed port. It simply seems like OSX just doesn't know the drive's there.
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Oct 9, 2007
I am a photographer. I use 4 X 1TB LaCie external hard drives to store my digital images. 2 as masters for different business segments and 2 as their back-ups. They are daisy-chained using Firewire 800. Recently my G5 has stopped recognizing one of the drives. Is there any way to get my machine to re-recognize the missing drive? I have rewired the four drives to see if there was a problem with the cabling, but this does not appear to be the case. I am coming up to the 1 year warranty period on this drive and need to get it back to LaCie if there is no other solution.
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Nov 1, 2008
I've got an external hard drive. It's a "My BooK" Western Digital 500 Gb that uses both USB and Firewire. I've used it many times successfully with my MacBook but today, my Macbook will not recognize it.
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Apr 24, 2008
After one of the security updates to OSX 10.3 my OWC Neptune firewire external harddrive quit showing up on the desktop and I can't find a way to access it.
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Apr 9, 2012
my new MacBook Pro not recognizing my hard drives. Yes, thats two hard drives I have that don't seem to work on this computer but both work on my older MacBook and many other computers.
Info:
MacBook, Mac OS X (10.5.8)
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Apr 11, 2012
I recently invested in a refurbished iMac which is running Mac OS X Lion 10.7.3 (11D2001).
I am trying to access my existing external hard drive through the machine and although this lights up when plugged in, it doesn't appear in the finder. Other Memory sticks work without problem.
It is a Western Digital Elements 160GB Portable Hard Drive that has worked and continues to do so without problem on my ancient iBook G4.
Info:
iMac (21.5-inch Mid 2011), Mac OS X (10.7.3)
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Jun 1, 2014
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 -
my MacBook thinks that the hard drive is formatted for windows - but why should it work OK under Snow Leopard but not with Mavericks? 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.
Info:
MacBook Pro (15-inch Mid 2010), OS X Mavericks (10.9.3)
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Jun 6, 2012
I am not able to convert movies, keep getting this message The document “The Walking Dead Trailer - YouTube-2.mp4” could not be opened. The movie's file format isn't recognized.
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Jul 1, 2014
When I try to open my .dmg file that I downloaded, it says that the file is not recognized
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Mar 5, 2012
I copied some file from one external drive to another and the folders doesn't show an arrow which I could click to show the contents of the folder. When I do get info it doesn't show the size of the folder but the hard drive that I copied from does. How do you make it show the arrow and size?
Info:
iMac, Mac OS X (10.7)
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Sep 19, 2010
My WD firewire 800 drive has stopped working, I can hear it spinning when I plug it in but the light doesn't come on and my computer doesn't recognize it. I've tried both the firewire and usb connections.
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Jan 20, 2009
I have two external hard drives, one 250GB for my Time Machine, and one 500GB for other stuff. I had accidently formatted my 500GB to use for Time Machine, but realized, I didn't need that much storage, so reverted to the 250GB for Time Machine and the 500GB for storage. But it seems, in the formatting stage (for Time Machine), it set my file system for the 500GB to Mac OS Journaled. I can see this hard drive on the Mac, but it does not recognize it in Windows (although I hear the USB plug in sound, doesn't show up in "My Computer"). Does this have to do with the formatting? If so, how can I format it so that the external hard drives can be read by both Mac OS X and Windows? Does it require moving my data (before formatting?)?
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Jan 31, 2010
Another one of those "external hard drive not recognized" problems: I am using a Mac Mini. The external LaCie drive is in one of those beautiful boxes designed by a guy named Porsche. It's connected via Fire Wire. I have my iPhoto library stored on it. It was working just fine for the past two days after I first connected it.
Now it does not show on the Desktop. It is identified only as "Unknown device" in "About This Mac." iPhoto doesn't recognize it. I've looked at the other threads on this subject here and have reset the PRAM. Disk Utility recognized it for a while and said the disk was OK. Now Disk Utility does not recognize it at all.
I turned off the drive and turned it back on. That resulted in an alarming series of beeps, almost like somebody was sending the Morse code symbol for "E" over and over again. I turned the drive off and then on again. Now the light goes on and the drive whirs nicely. I am using System 10.6.2. Or rather, at this point it is using me.
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Feb 20, 2012
I have a new seagate 500gb hard-drive, it is recognized on Disk Utilities and not only that it also says the hard drive is 2tb.
Info:
MacBook Pro
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Mar 21, 2012
I am trying to pull up my Western Digital External Hard drive after connecting it via USB. I used to be able to open it through Finder and there is nothing showing up.
Info:MacBook Air, Mac OS X (10.7.3)
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May 31, 2012
I just installed a new internal hard drive into my macbook as my old one was failing. Before doing this I backed up all of my information through Time Machine onto a Seagate FreeAgent external hard drive. I've been using this external hard drive for the past two years and I've never had any problems with my macbook mounting it. Once I had all of my personal information backed up I took out the external hard drive and then proceeded to take out my old internal hard drive and installed the new one. I installed the Mac operating system and the Macbook started up just fine but when it came time to reload all of my personal setting using Time Machine my macbook didn't recognize that there was an external drive plugged in. I know it isn't the external drive as it mounts just fine on other laptops. how I can get my macbook to mount the drive so that I can transfer all of my information onto this new internal drive?
Info:
MacBook, Mac OS X (10.5.8), Seagate FreeAgent
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May 24, 2012
I accidentally formatted my external hard drive when I was creating a Windows USB install disk with Boot Camp It was a HFS+ formatted drive with a GUID partition table and 2 partitions: one clone of my Macbook OS, and one with personal data. I'm not worried about the OS clone, I'm more concerned about getting my personal data back on the second partition.So far I've used Stellar Phoenix and Data Rescue 3. I reformatted the hard drive from FAT to HFS+ before I did these scans. Not sure if it was a good idea, but the programs wouldn't scan properly otherwise.Stellar finds my files with the original folder structure, but I can't open any of the files, even though the file sizes seem to be correct. Data Rescue partially finds the original folder structure, and also has a "Reconstructed files" section which has all my files sorted by file type and without the original file name. I really want to avoid going through all my photos, videos, etc. one by one to sort them out.
Can I still recover my files in the original folder structure? Why can Stellar find all my files basically intact, but I can't open anything? In the meantime, I'm going to try scanning with Disk Drill and FileSalvage with fingers crossed...
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Jun 23, 2014
i have Macbook Pro 2011 8GB RAM, 1 TB Hard drive OSX Mavrick. i recently ejected my back up drive but it was not a properly ejected now when i plug in the computer it doesnt come up as hard drive. it shows up in the disk utlity but it doesnt open its my backup drive and i dont want to loose m data
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