Opied files got corrupted in USB3 external drives connected to Macbook Pro, how to fix it?

I use USB3 connected external hard drives in my Macbook Pro mid 2012 (Yosemite 10.10.1) frequently. I had no problem until two months ago. This week I noticed a lot of corrupted files in one ext drive connected to USB3 port. Luckily  I have a backup, and I copied back the files. But the files copied recently were also corrupted even though source files are fine. I spent a whole day trying to fix it using different methods of copy and options, e.g. erasing the drive, using cp, rsync, ditto and a combination of their options. I figured out that if I use cp or cp - R for copying single file or folder, it works fine, but using of rsync, ditto or recursive cp or finder's drag and drop result into a lot of corrupted files in the target drive.  This is not the problem of external drive.  I was surprised to notice that all files are copied perfectly when I used a old macbook (2008 model, it only has USB2 port, and OSX Mavericks). Since I have almost 2TB data to write, USB2 is very slow. I want to use USB3 of Macbook Pro 2012, but I am very disappointed to find out that USB3 in Yosemite is causing the trouble, writing out corrupted files. If anyone has a solution to this problem, or a second thought, Please suggest.
External hard drive Western Digital My passport.
Disk is formatted to Paragon NTFS

My guess here is there is some issue with the use of Paragon NTFS. Perhaps updating it or using another NTFS driver (like Tuxera, or its free alternative NTFS-3G) will work. All in all, using NTFS in write mode with these options will be using a non-supported approach for accessing your drive, which could lead to odd problems if Apple makes a change that interferes with the functions of these drivers. At other times, such drivers use inherently less stable approaches (such as the FUSE environment) that could lead to problems if not formatted correctly.
If your drive is working, and the formatting is checked out properly in Windows and other systems, then I'd suggest you check on your NTFS driver and update or replace it. Alternatively, if you only use the drive with your Mac, then consider formatting it to Apple's native Mac OS Extended. Lastly, if you use the drive with multiple operating systems, then consider using FAT32 or ExFAT as the format, as these are fully supported in OS X (unlike NTFS, which is only supported for reading).

Similar Messages

  • Copied files got corrupted in USB3 external drives connected to Macbook Pro, how to fix it?

    I use USB3 connected external hard drives in my Macbook Pro (Yosemite 10.10.1) frequently. I had no problem until two months ago. This week I noticed a lot of corrupted files in one drive. Luckily  I have a backup, and I copied the files. But the files copied recently were mostly corrupted even though source files are fine. I spent a whole day trying with different options, e.g. erasing the drive, using cp, rsync, ditto etc. I figured out that if I copy single file or folder using cp, the copied files are fine, but rsync, ditto or recursive cp or finder's drag and drop results into a lot of corrupted files. I thought this was the hardware related issue of the external drive. But, I was surprised to notice that all files copied without any problem when I used a old macbook (only has USB2 port, and still use Mavericks). Since I have almost 2TB data to write, USB2 is very slow. I am very disappointed to find out that USB3 in Yosemite has caused all these troubles. If anyone has a solution to this problem, Please suggest.
    External hard drive Western Digital My passport.
    Disk is formatted to Paragon NTFS

    It's good to hear the Macbook Pro & the disk is capable of working correctly. The next test would be to try a clean install of OS X & repeat the copy guess. Adding third party drivers for write support makes the picture a little cloudy IMO.
    I'm not really sure what else to suggest other than doing some tests & then taking that data to an Apple store. If you are lucky the genius may follow up on it, or if you submit it as bug reports Apple may follow up on it.
    http://apple.com/feedback/
    Good luck with it, if you want some other ideas post back

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    Message was edited by: Little River

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