OS X :: Copying Large Files To USB Hard Disk?
Jul 2, 2009
I recently picked up a USB Hard Disk, I plan on copying large files to it (for example 20gb VMs), I am wondering whether or not finder can copy files as large as 20gb one at a time because the last time I tried to do this on a USB Stick, the file transfer would either freeze or would end up taking way too long to transfer and in the end I had to pull it out and having to reformat it. DOes anyone here know if such things will happen again copying these files?
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Jun 19, 2012
I am having another problem transferring some larger folders from my old MacBook to my new MacBook. I am trying to move some very large folders and individual files from my old Mac to my new Mac, both running the latest Lion. I have tried this with both USB Flash drives and with external hard drives. Whenever I drag and drop from Finder to either the flash drive or the hard drive, the copying begins, but always gets stuck with the pinwheel at almost exactly 4.17GB. At first I thought that the formatting of the flash drive might be the culprit, but it also happens on the external hard drive that is formatted for Apple Extended.Â
A very "time and effort" intensive workaround is possible if I just copy fewer than 4 GB at a time, which is what I have been resorting to. But this won't allow me to transfer my Windows 7 Parallel virtual machine, since that one file is over 90GB. As additional information, it appears that Time Machine isn't bothered by this limitation, since I can backup and restore these huge files from a backup. Unfortunately, Migration Assistant doesnt seem to permit the granularity of restoring just one file. why the system hangs at 4.17GB of transfer? By the way, this happened with Snow Lion too. It didn't just start with Lion.
Info:
MacBook
Pro, Mac OS X (10.7.2), 15" MBPB, 8G RAM 750GB, 500GB
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Jun 18, 2008
I think I have found a bug in Finder where I cannot copy large files from a bus powered USB external. I get this error:
"The Finder cannot complete the operation because some data in "..." could not be read or written (Error code -36)"
I think I have eliminated hardware as an issue:
1. The problem is repeatable (and always happens) on my Intel Macbook Pro, Intel Mac Mini and G4 Mac Mini
2. The problem happens whether I have formatted the external as HFS+ or NTFS (I can't use FAT32 for files over 4GB, e.g. VMWare disk images)
3. I can copy the files off the external with my Windows Vista machine (mostly dormant these days) and an XP laptop (I use for work), using Explorer.
4. The same problem happens with two different external enclosures (An Xtatix Portadrive and a Beyond Micro mobile Disk). I have also tried 3 different 2.5" drives in these enclosures.
5. If I boot my Macbook Pro into Vista using Bootcamp, I CAN successfully copy the files using Explorer.
6. I CAN also copy the files OK if I use Terminal and the 'cp' command (it works for all 3 machines)
7. I have NO problems with large files and Finder if I use a powered external with 3.5" drives via USB or Firewire (HFS+ or NTFS) on any of the Macs.
As you see, I think I've been pretty thorough. It seems as though Finder must be at fault when used with a bus powered USB external.
I should also mention that all 3 of my Macs are on Leopard 10.5.3, though I did also boot a my Intel Mac Mini into Tiger with the same result (Finder failed, 'cp' worked).
I have reported the problem to Apple, but wondered if anyone else has had a similar issue...and hey, a solution would be a great bonus!
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Nov 22, 2009
I've recently purchased a NAS drive and would now like to copy about 500 GB of files onto it. Obviously this is a slow process! Is there a way I can set up the copy so that if it gets interrupted I can resume the transfer? At the moment the I just know X of 100 GB has been transferred. On the destination drive you can't see any of the files being transferred across until the entire operation is complete (on a pc you can normally see the files that have been transferred immediately) ... I'm a bit worried that if I turn my laptop off or I have any network issues the transfer will fail..
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Jan 6, 2009
Is there a way I can do this through OSX (leopard) or do I need special software for it? What software would that be? Toast?
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Jun 22, 2012
When I try to archive my files with Time Machine I get an error message "error disk not available". The external disk is a 1 TB Iomega EGO Portable Hard Drive Mac Edition connected with 2 USB connection to my Mac Book Air with MacOS 10.7.4. I have format the disk in MacOS extended. I have tried to copy file from my internal disk to the external disk & it works correctly.
Info:
MacBook Air, Mac OS X (10.7.3)
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Apr 17, 2012
What if a Time Machine backup was created on a Mac with a large hard disk, e.g. 500GB iMac - and I buy a new MacBook Air with a small SSD hard disk e.g 128GB. What happens when I need to use the larger Time Machine file to set up the new MacBook Air? What happens to all those files that can't fit on the smaller SSD drive?
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Dec 20, 2008
I am moving a few folders which are in excess of 4 gig each from one hard drive to another to try and free up space, of course I am aware that one is formatted for mac and the other is ms dos but I already have stuff on it and can't take it off in order to reformat it (or I do not want to). Is there a program that exist that will allow me to do this, I was only thinking in regard to programs such as Senuti for backing up an iPod. Since an iPod is so huge, you tell the program where to put the songs and regardless of the space it will do it, no questions asked. If you understand what I am on about can you please assist me in any other way in regard to solving me problem.
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Mar 27, 2012
I have a 250GB WD external hard drive. I formated it in MS-DOD(FAT)/ExFAT using disk utilities.I have problem copying files from MacBookPro to an external hard drive. when i try to copy it says "The Finder can’t complete the operation because some data can’t be read or written (Error code -36) " The info of the files is shown as read & write?
Info:
MacBook Pro (13-inch Early 2011), Mac OS X (10.6.8)
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Sep 10, 2010
Got a slight problem transferring files from my Macbook Pro to my portable hard drive. My portable hard drive is partitioned into NTFS and FAT 32. The files are over 4gb big so ultimately I cant copy it to the FAT 32 partion and NTFS doesnt seem to work with mac books
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Nov 8, 2009
I am trying to transfer a large file (~7GB) from my macbook pro to my external drive... but seems that I keep getting an error. If I try to drag and drop from my Mac drive to the folder of my external hard drive I keep getting this message: 'The operation can?t be completed because an unexpected error occurred (error code 0).' I tried to use a UNIX command with the Terminal $mv file.xxx /Volumes/HardDrive/ at first it seemed to work, but after a while I receive this message from the Terminal: 'File too large' I am now frustrated... I need to save this large file for backup purposes and my external hard drive is not big enough to be used for Time Machine (it has 80GB out of 160 of space left)
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Mar 7, 2007
I have a 38gb iMovie file on my MacBook. I also have a 160gb external HDD. I want to copy the file across, sounds simple right? It will start copying happily but when it gets to about 8-10gb I get this error message (EVERY TIME!): Sorry, the operation could not be completed because an unexpected error has occurred (Error code -1309). I really do not want to delete this file as it is a wedding video I did for a friend only a few months ago. I am trying to copy across to a Freecom II drive using USB.
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Jun 4, 2014
How do I copy files fromone external hard drive to another external hard drive via mac book air
Info:
MacBook Air (13-inch Mid 2013), OS X Mavericks (10.9.3)
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Oct 29, 2009
I have 1.9TB on one drive, 645GB on another; I want to copy all that data onto a separate 6TB drive....
What's the fastest way to do this? I have already begun w/ 2 cp -pR commands, running in different Terminal windows, but seem to be getting lower disk activity numbers in Activity Monitor than I was with a brief test of a Finder copy... is that possible?
Any suggestions? Also looking for a (relatively) efficient way to verify the copied data after the fact.
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Mar 18, 2012
This error probably indicates a hardware problem or some system malfunction. I usually try to find out what exactly went wrong to take measures to avoid the repetition of the same problem. Exchanging the HD and restoring the sytem may be the quicker solution, but I would miss an opportunity to reconfigure my system to make it more robust.Â
The system in question is a MacMini (Model A1347) with Os-X-Server 10.6.7. and 2 physical HDs: HD1 has 2 Partitions, the smaller for the server OS, the larger for the Shares (We use the MacMini only as a file server). HD2 is not used (was kept in reserve for cases like this). Â
That there may be a problem manifested itself first when the mounting of the shares on HD1 became suddenly slow (within 2-3 days) and eventually failed. I first tried to copy all the files from the shares on HD1 to HD2 before attempting any repair actions. Most of the files copied properly but a few failed with error (-36). Those few can be restored from backups, so there is no data loss. Remains the question, what went wrong? Â
It may be pure coincidence but just before the File-Server failed there was an attempt to upgrade a 3rd party software on one of the clients (17'' MacBook Pro / OS X 10.6.8) to a newer version. Could be that new version was part of the problem because the data files of this 3rd party software are stored on one of the shares on HD1 and the data file format has been changed between the versions. For obvious reasons I need to make sure that this data file conversion was not the cause of the problem?
1) first check the HD1 with a different tool than DiskUtility (It thinks the HD1 is in perfect shape), TechTool Pro or DiskWarrier comes to my mind, any reason to prefer one over the other?Â
2) Hopefully those tools can reliably test whether the HD1 is damaged or not. If it is the former the HD1 replacement option is the way to go and there is no more reason the 3rd party software may have been involved. However if HD1 is not damaged I'm left with the uncertainty of what exactly lead to the problem..?Â
3) Is there any check I should do before I just re-format the HD and re-install the OS and switch back to an earlier version of the 3rd party software to be on the safe side? Â
Info:
Mac OS X (10.6.7)
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Apr 22, 2009
I was just wandering if there is any software that people use for copying large amounts of data, or whether you just drag and drop/copy and paste with Finder?
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Jun 9, 2009
every time i try to copy a file that is over 6gb to my external drive i get this message "sorry, the operation could not be completed because an unexpected error occurred. (error code 0) how di i fix this error?
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Sep 2, 2014
I am willing to save on my hard disk the content of a SD card that contains mts files that I can access via AVCHD, BDMV, STREAM.
When I copy the whole SD card to save on my hard disk, I get an error message saying that the copy cannot proceed because one of the file contains information that cannot be read.
I was told on this group, that changing the structure of the AVCHD folder should not be changed. Can I delete the file that contains a bug ? or will I screw up the AVCHD folder ?Â
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May 18, 2010
I'm wondering if someone with the latest Time Capsule (announced last week) can post the results of copying a large file (such as your iPhoto library or equivalent - ideally over 500MB) from the HD on your Mac to the HD on the TC over GigE.
Please report the time in seconds for the copy to complete and the size of the file. I'd like to understand if they changed the QoS on transfers to the TC HD.
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Feb 6, 2010
The free space on my MacBook is disappearing fast but I don't know why. I am hoping someone can tell me where to start solving this problem. It must be invisible files but what can I do about it? This started after I restored from a Time Machine backup to a new hard disk after the hard disk failed (another story). The Time Machine backup was about a week old (isn't it always the case?) so I don't think it is likely that I could have restored anything that might have had anything to do with the hard disk failure. Everything seemed to be working fine, having spent hours resorting emails and trying to reconstruct files I had lost from the week I didn't back up. During that week I had bought an iPhone. When I connected it to the restored computer it deleted all the apps I had installed. Not a big problem, as I was able to track them down from an iTunes receipt and reinstall them. I then attached my iPod and the computer had to replace all the files with new ones. As there were a lot of songs and photos I left it to do this and went to bed. Next day the iPod now had newly replaced files and seems fine. But there is a warning that the startup disk is full. No new files had been put on the computer, which had about 9.5 Gb free space. I deleted some files so I could do some things with the computer to find out what was happening. The space thus freed soon disappeared. I then deleted Parallels Desktop so that I could free up more space. I now had 29.67 Gb free space. I tried searching for large files but nothing suspicious seems to detectable. By the end of the day the free space had gone down to 24.39 Gb. It now stands at 23.22.
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Mar 27, 2012
I have to send my Mac Book Air to technical service. They told me they cannot guarantee to save the data in the computer so I should save all my data. I cannot pass all the pictures and files to a hard disk. How do I do this?
Info:
MacBook Air, iOS 5.1
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Dec 25, 2010
This only happens when she copies files between internal hard drives. After copying the files, she verifies that files exist in both locations. She then deletes the files in the old location. Then, newly copied files are missing from the new location.
I've never heard of this happening before, except for with improperly unmounted external drives. I have run disk utility and verified that there are no problems with either drive.
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Nov 29, 2009
Why does my mac stop downloading files, copying to clipboard, saving files to desktop, etc?
iMac g5 1.9 ghz 17" running 10.5.8. Had a hard drive crash and bought a new one. Loaded new OS leapord. Everything works fine at first, but after the computer has been on for a while, it will stop downlading files, disk verify doesn't work. I can't copy and paste stuff. It seems as if the hard drive is full, but I have only used 32GB of 300GB.
When I restart, it works again, then slowly not. Is it an overheating issue? How do I know if my fan is running? Is it a bad hard drive I put in it? Bought it new with three year waranty.
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Jul 2, 2009
On several separate occasions, one of our users has had trouble with files "disappearing."
This only happens when she copies files between internal hard drives. After copying the files, she verifies that files exist in both locations. She then deletes the files in the old location. Then, newly copied files are missing from the new location.
I've never heard of this happening before, except for with improperly unmounted external drives. I have run disk utility and verified that there are no problems with either drive.
Could anyone help explain why this is happening or how to prevent it?
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Jun 6, 2012
i have a mac performa (1997 running mac OS 9) hard disk and i want to move its files to a macbook pro (early 2011 running Mac OS X 10.6.8) how can i do this operation? and if i can, will the files on the hard disk be executable? i have some filemaker pro 2 documents that i need, will i be able to view them?
Info:
MacBook Pro, Mac OS X (10.6.8)
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Jun 9, 2012
I have an external HD where I back up data from other Window laptop. when I connect this HD to Macbook, it is available as read only. I cannot copy files from my MacBook Hard disk to the external HD.
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Nov 2, 2010
I recently discovered, after running Disk Inventory X, some really fat files in my Library. I haven't touched them, as I read on another forum that it could be dangerous but is there anything I can do to get rid of them? I thought maybe they were left there after a recent Time Machine backup because I read that happening to someone else in another forum...
I've attached screenshots (I think) of the two biggest files.
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May 14, 2012
I am deleting large amounts of files / directories with 10s of GB of disk usage from my internal hard disk.Then I empty the trash.But I don't get more free space on my hard disk! I am not using File Vault.(I also believe that my file system is not corrupt.) This is quite annoying, since I am still unable to copy stuff on my internal hard disk, but given the amount of files I have just deleted, I should be able to do so.
PS:MacBook Pro, 10.7.3, very recent model, 500 GB internal hard disk.
Info:iPhone 4S, Mac OS X (10.7.2)
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Sep 2, 2014
My hard disk is a Raid system. 4x3TB = total 12TB but 3 TB is for backup. So in effect usage space is 9TB. But now used up 7TB (called it original harddisk) I took my iMac to a shop and it dis some verify and tried to repair the disk using Disk Utility. But it cannot repair. Apparently, he said that my hard disk is okay but it has a directory corrupt problem. That is why now my FCPX cannot read all the data. All my media files for FCPX are stored in this 9TB external hard disk. So, I was told the steps to do are:Â
1)Â copy all these 7TB data from Original hard disk into a new hard disk (called it haddisk B).Â
2) Then reformat the old 9TB hard disk (which we earlier called as original hard disk).Â
3) Then I copy back from hard disk B into Original Harddisk 9TBÂ Question is will FCPX be able to recognise again my media files from the Original hard disk in
Info:
15.4, Mac OS X (10.6.8), 27" iMac - 4GB RAM, 1TB HDD, 1GB ATI Radeon HD, i5 QuadCore
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Jul 9, 2009
My dear baby, a 3 year old macbook pro died last week (way to young). Fried logicboard. Apple wants 1.550 dollars to fix it, so I guess it is gone for good.
My question is, is it possible to take out the harddisk, put it in an external enclosure and plug it in to another mac to get the files?? If so, what enclosure should I buy?It is a summer 2007 macbook pro.
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