Software :: Data Corruption On External Drive?
May 20, 2009
I have a Western Digital MyBook Studio eddition 750Gb plugged, via USB, into a MacMini (10.5.6). I store my whole music collection (~100Gb) on this drive, and a little while back, started to have trouble playing certain songs from within iTunes. iTunes would not error, it would just refuse to play the track. It then refused to play a long mix, which I had listened to from the very same source the previous day. I copied the same mix back from my laptop and diff'd the two. They where indeed different. If I run "file" on them both, sure enough, the working one reports "MP3 blah blah ...", the broken one "data". I have ran a find over the entire livrary and discovered that about 20% of the tracks are now reported to be "data". Whats more, the corrupted tracks seem to be in groups (entire albums or several albums by same artist etc.).
I'm assuming this is a hard drive fault, but I have run every check in both "Disk Utility" and "Diskwarrior", and no problems are reported.
Can anyone shed any light on what might be going on here, or offer me any advice on how to debug further?
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Nov 23, 2008
Mac OS X just crashed while I was writing to my external hard drive; I rebooted my mac and the disk is now corrupted. My old partition is no longer mountable, nor can I fix it with Disk Utility. I get the following error when I try to verify/repair it:
Verify and Repair volume ?disk1s2?
Checking Journaled HFS Plus volume.
Invalid node structure
Invalid B-tree node size
Invalid node structure
Invalid B-tree node size
Volume check failed.
Error: Filesystem verify or repair failed.
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Sep 4, 2009
So, I've been searching the forums, as I just had a 1TB (well actually a dual 500GB) external drive stop mounting and start clicking on me. I'm trying to find a way to recover files, and I know I've seen a lot of posts on DriveSavers, which. I was searching around, and I was wondering if anyone has ever heard of a company called "OneWorld Data Recovery." It was something I stumbled across, but I can't find any reviews, or nail down anybody who's used it.
Clearly, this seems fairly suspect, but I figured I'd check and see if anybody had ever heard of it or used it. Thanks!
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Sep 5, 2014
Basically I have a 750GB hard drive in my Macbook Pro and over 300GB is taken up with 'BackUp' data. This is more than the total of everything I have on the drive other than that. Time Machine has always been setup on an external drive and when searching all files on the Macbook there is nothing for backup files so don't know where it is coming from.
Info:
MacBook Pro, OS X Mavericks (10.9.4)
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Jul 19, 2010
I have a 17" MacBook Pro 2,1 ~2006 model 2.33 Intel Processor, running Snow Leopard. A year ago I upgrade the ram to 4GB (though this model only recognizes 3GB), and upgraded the internal hard drive to a 500GB 7200rpm Seagate Momentus. Since April this year, I have had 3 ocassions where the Screensaver locks up, the only recovery is to power off by holding the power button down for a few seconds, which leads to me loosing my drive partition. Because of the way OS X is sucky about mount points, I have the entire 500GB partition as one volume. Up until last week, I treated this as a minor annoyance, as I have multiple time machine backups, and the reformat and restore works and is relatively quick.
Aside from making me reluctant to travel with this laptop (luckily I have an Air as well, but that does not work for all my needs). On my most recent trip not only did the volume get corrupted, the machine did not recognize the drive, or any drives on the machine (incl. the dvd drive). Only after removing the drive completely, a combination of the boot up key sequences for resetting the machine, and booting off the cd, did I manage to get the machine to eventually recognize the hard drive. I am unable to determine if this is a faulty drive, or a faulty machine. I have run the Apple Hardware Diagnostics which give the all clear - I have nothing to stress test the drive, and I am running out of debug options and patience. Although this laptop is getting "long in the tooth", it still works like a champ (except when it crashes), and my only gripe being its weight.
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Dec 17, 2009
I am having problem with starting up my new MBP, would really appreciate if you could help me out.
Hardware:
1. Current rev of MBP 15' 2.53 Ghz
2. HITACHI Travelstar HD20500 IDK/7K 500GB 7200 RPM
What happened is that I had this Hitachi drive in my PC laptop running Windows 7. Last night I got my MBP and decided to put that Hitachi drive in macbook, then format it and install OS X. Once i put the hard drive in and tried to start MBP i kept getting Windows Recovery Screen because MBP was trying to boot from hard drive directly. Since this is my first ever Mac I didn't know what key to press to be able to choose from DVD. On one of the attempts I actually hit "Proceed Windows normally" and it gave me blue fatal screen saying it was not possible...........
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May 25, 2008
Probably a stupid question but I can't figure this out as it is not covered in the User's Guide or in the FAQs on the Fantom website. I have an PowerMac G4 with an old Fantom 120GB external drive which is nearly full. I have purchased a Fantom Drive High Speed USB 2.0 (750GB.) How do I transfer data from my old Fantom to the new one?
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Aug 17, 2009
Macbook pro 13' running 10.5.8 has intermittent issues with usb 2.0 mass storage drives but not jump drives. Here is the issue, my gf just got a brand new mac book pro 13'. This is great for her no more asking to use my unibody macbook. She plugs in the drive I have used for a very long time with my mac my pac etc. with not a hint of issue. The drive shows up copy's stuff off ok. However when it came time to return the data back to the drive it gets about 10% through and just hangs. Here is what I have done. I first thought ok might need a reboot. Then I went with the ok I will check her disk for issues. This is a 3 day old mac book by the way. I found random permissions errors with quick time which has never been run. After the fix the issue goes away for that boot.
The issues seems to come back after a re-boot or so. I go ok enough of this I format the mac with the system disk, then I update to the latest updates from apple. Plug in the drive and still having issues. Run the permissions repair same issues exactly format to format. I have also run the deep test off the system disk the machine checks out through that so I have ruled out ram on her system as a possible culprit. I am at a loss on this machine. I have gone so far as to format the external drive replace the data from my network server and try that. Still no luck. On my box there is no issue it time machines great it copy's data like a usb 2.0 drive should.
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Dec 12, 2014
I have a seagate external drive that I used to back up my windows 7 computer. My windows hard disk totally died so now I want to transfer all the files I need on to my mac. I bought the mac because I knew the windows unit was on it's way out. I am just not sure what to do now that it is reality. I have a hard time with this mac since all I have ever used was the windows stuff. I tried to find something in the FAQ but nothing is as close to what I want.
Info:
iMac, OS X Mavericks (10.9.4), MEO88LL/A
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Sep 14, 2010
I originally formated my Drobo to 2TBs which I've now outgrown and need to reformat to avoid having two partitions. That requires that I xfer the data on a Drobo to another HD. Right now I have 1.2TB of data on the Drobo. I'm pretty a 1.5TB drive will be able to handle this, but not 100%. Will it once it's formatted? Next question: is migrating data from a Drobo to an ext. drive as easy as using Carbon Copy Cloner or Super Duper and cloning the Drobo and then using CCC/SD again to send the data back to the Drobo? Do these apps see the Drobo as one drive and Drobo does the rest, as it normally does?
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Sep 21, 2010
I am trying to use my hard drive I have had for a couple years to back up some files on my computer, but the data I had stored on there already has disappeared. I previously had the hard drive connected to the Time Machine application, but have not used it in over a year when I received an error message trying to backup my computer using that application.
I know the data I already had on there is still on the hard drive because nearly half of the space on the drive is used up, but when I plug the hard drive in to my computer and open it there are no files to be found. I want to back up the current files on my computer, but I don't want to risk losing what I already had on the hard drive, so is there any way I can find and access the old files again?
I'll include my hardware information on here in case that helps to find a solution:
2006 MacBook Pro 15"
Intel Core Duo
Mac OS X 10.5.8
1TB Western Digital My Book: Studio Edition II
Dual-drive Storage System with RAID
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Mar 5, 2009
Our old Toshiba External Hard drive has failed ( approximately 3 years old ). It powers on and the blue light comes on, but the fans don't spin and you can't see it in the finder or on my computer ( we tried on both PC and Mac ).
Any ideas as to how I can retrieve the data... without going to a specialist and pay ���, or would that be the only option
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Jul 2, 2009
So my new Mini 2.23 arrived today and I'm trying to think of how I'm going to go about restoring the data from the old Mini. I've sold my old Mini, but used SuperDuper to backup to external drive. I have a MBP I can use if necessary.
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Feb 8, 2012
I had achived data from another computer (windows platform) and I decided to back up my data of my mac book from using time machine. After I did that I lost all the data I had before. how do I restore the old data back I had in it?
Info:
MacBook, Mac OS X (10.5.8), External hard drive
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Mar 5, 2012
I bought a MacBook Pro 13"".I do have a seagate external hard drive. When i connect my External Harddrive to Mac the data can only be read mode.I am not able to Write data on to External Hard drive.
Info:
MacBook Pro, Mac OS X (10.5.7)
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Mar 13, 2012
1. how i can transfer OR save my data or music to my external Hard Drive. As it keeps coming as my External drive is 'READ ONLY', when I have chnaged my 'Shared' setting sto Sharing.
2 I want to save my data to our 'Tera Byte External Hard Drive'?
Info:
iMac (21.5-inch Mid 2011), iOS 5.1
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Mar 13, 2012
My external USB backup drive is not large enough. I purchased a Western Digital My Book USB 3 Tb drive and need to transfer all the data from my old drive to the new one.
Info:
iMac, Mac OS X (10.6.8)
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Mar 15, 2012
How do you migrate itunes data from an external PC drive to a Mac Mini? It does not seem to recognize the hard drive.
Info:
Mac mini, Windows 7
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Apr 1, 2012
I am running an early 08 MBP w/os10.7.3.I really screwed up this morning with a backup disk. my backup system consists of several external, stand alone drives and a HD dock and several internal HDs that plug into that dock.I had a stand alone Iomega/200G/USB that i wiped to give my son who doesn't "get" backups yet. I simultaneously had the USB dock plugged in w/ a Samsung 1.5TB HD powered on. I had moved the Iomega data to the Samsung prior to erasing the Iomega w/ Disk Utility. I had chosen the 7pass wipe on the iomega last night following the data transfer. it had completed 2 passes this morning w/ fourteen hours still showing til completion. i decided that three was plenty and disconnected the iomega to reconnect and select the 3 pass option to expedite. USB dock w/Samsung still powered on and plugged into MBP. disk utility defaulted to the samsung when iomega was ejected. I hit the three pass option and started the wipe without seeing Disk Utility default to the samsung. I did immediately see the flashing red data transfer light on the dock come on and realized my mistake. Immediately disconnected the USB HD dock. Disk Utility was showing "preparing disk" in its status bar. It appears that the formatting has been wiped as reconnecting the dock gives me a "the disk is not readable by this computer". I'm sure the data is still there, but the disk needs to be reformatted. The disk appears in the disk utility sidebar. all disk repair options are greyed out.
I am considering using partition in Disk Utility as that would reformat the samsung disk. However, the data on the disk would normally appear as a blue segment on the rectangular disk setup diagram. there is no blue. According to partition docs, you can partition a disk w/out the data being wiped. However, if the disk is unreadable when the partition process starts, will it wipe all the data as it partitions and reformats? Very reluctant to initiate this process w/out knowing more.
Info:
macbook pro, Mac OS X (10.7.2)
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May 5, 2012
I had to get a new hard drive put into my macbook pro because it was failing. So, I moved all my data onto an external hard drive so I would not lose anything. But now I cannot get iphoto or imovie back onto my computer. It says I cannot open it because it is a time machine back up. I don't want to have to purchase iPhoto and iMovie again just because I had to replace my hard drive.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jun 30, 2012
how do i retrieve data from my external hard drive?
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Dec 6, 2014
I have an external USB HDD that was originally formatted as Mac OS Extended (journaled), it was accidentally erased (using Disk utility) and re-formatted to FAT32. the HDD has not been used since (other than to try and recover the data using various tools), so no new data was been written to it.
Any methods that could be used to recover the data from the drive?i've tried DiskWarrior but that can't do anything with the drive as it's not a "macintosh disk".
Info:
Mac mini, OS X Mountain Lion (10.8.3), 2.3Ghz Core i5
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Dec 6, 2014
I have an external hard drive that is about one third full. Can I now partition it into 2 partitions in which the existing data is in Partition 1, and Partition 2 is empty and available for new, different data?
Info:
iMac, OS X Mountain Lion (10.8.2)
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Jun 21, 2014
Suggested to move the original files to the EHD and leave the referenced files on the laptop to save space and still allow edits. My question is, if you are using Time Machine, what is it backing up on the LT and how do you apply this to the data on the EHD?
What I am trying to achieve is to move my Aperture library to an external HD. and clone it to a second drive and backup the laptop with Time Machine. After the next session I would again clone the 1st drive and rely on TM to continue to backup the LT.
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Dec 19, 2009
I want the most secure and most protected so I do not have any chance for me to loose my information. I hear good things about g tech, what are your experiences? Should I go with a RAID, will it work with IMAC? I did tons of research and found nothing but conflicting info about each brand. My eyes are bleeding now.
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May 14, 2012
I had mounted my drive to a G5 tower and it was severely frozen and would not let me shut down. I forced the computer off while the drive was still running and now when I try to mount it it, every computer tells me that the drive I inserted is not readable, and it gives me the option to initialize, ignore, or eject. I don't want to lose any of that data, is there anyone that knows how to recover these files?
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Jun 3, 2012
I had my hard drive replaced in my iMac and I a
Can not transfer my data off you external hard drive
Info:
iMac, Mac OS X (10.6.8)
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Jun 11, 2012
Since I activated FileVault 2 on my Mac boot drive without initializing it, I'd assume that the same thing could be done for any other drive. I've got some external drives with hundreds of GB of data which I'd like to encrypt. Disk Utility lets do it by erasing the drive and encrypting the data written afterwards.
Is there any hidden feature that allows one to convert the drive without erasing it first, like the FileVault utility did for the boot drive (even when working on it!)?
Info:
MacBook Pro, Mac OS X (10.7.4)
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Jun 25, 2012
How do I partition my external hard drive without losing the data already on it? I've been using it with Time Machine on my old computer, but want to use it as a regular drag-and-drop type back up on my new computer. Is there any way to basically split the hard drive so I can still access the Time Machine backups on my old computer, but also be able to use it with my new mac?
Info:
MacBook Pro, Mac OS X (10.6.8)
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Nov 5, 2007
I have used the disk for a number of years - all appeared to work fine - I am now backing up my data and only get Very slow transfer speed using firewire 800 - 2 hrs to transfer 1.36 Gb. Disk is connected to a Dual 1.8 Ghz Power PC G5 with firewire 800 - another d2 disk is connected to it with firewire 400 and I have just connected a Maxtor disk using firewire 400 to that. I have tried Updated the firmware (it did require it), tested the device alone on both 800 and 400 connections both slow. Restarted everything and used disk repair to check and repair the disks - repaired permissions on the startup disk.
Connected all the devices together again | LaCie 800 - LaCie 400 - and Maxtor 400. It sends data to all the other devices fast (~ 3 min for 1.6 Gb) through the LaCie 800 disk connection!, but does not send data to the LaCie 800 fast at all. Tested the other devices alone as well - they are all fast. Have also performed a TechTool Pro Ver 4 test on the the disk (Disk type ST325082 3A 232.89 Gb LaCie d2 External LUN0 revision 3.03) Passed the surface scan, disk controller and read write tests. Is the disk failing?
Information:
G5 Tower
Mac OS X (10.4.10)
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