I can't add files to my external HDD since I switched to Mac, help?

Discussion in 'iMac' started by GunZi, May 21, 2013.

  1. GunZi macrumors 6502

    Jan 4, 2012
    i Cant paste videos and such on my HDD. its name is IOMEGA HDD its 1TB

    Format is: Windows NT File System (NTFS)

    i have no idea what to do, i did read though that i need to change the disks format.

    please help :(
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Format A Hard Drive Using Disk Utility (which is in your /Applications/Utilities folder) Choose the appropriate format: HFS+ (Hierarchical File System, a.k.a. Mac OS Extended (Journaled) Don't use case-sensitive) NTFS (Windows NT File System)
    • Read/Write NTFS from native Windows.
    • Read only NTFS from native Mac OS X [*]To Read/Write/Format NTFS from Mac OS X, here are some alternatives:
      • For Mac OS X 10.4 or later (32 or 64-bit), install Paragon (approx $20) (Best Choice for Lion)
      • For 32-bit Mac OS X, install NTFS-3G for Mac OS X (free) (does not work in 64-bit mode)
      • For 64-bit Snow Leopard, read this: MacFUSE for 64-bit Snow Leopard
      • Some have reported problems using Tuxera (approx $36).
      • Native NTFS support can be enabled in Snow Leopard and Lion, but is not advisable, due to instability.
    • AirPort Extreme (802.11n) and Time Capsule do not support NTFS
    • Maximum file size: 16 TB
    • Maximum volume size: 256TB
    • You can use this format if you routinely share a drive with multiple Windows systems.
    exFAT (FAT64)
    • Supported in Mac OS X only in 10.6.5 or later.
    • Not all Windows versions support exFAT. See disadvantages.
    • exFAT (Extended File Allocation Table)
    • AirPort Extreme (802.11n) and Time Capsule do not support exFAT
    • Maximum file size: 16 EiB
    • Maximum volume size: 64 ZiB
    • You can use this format if it is supported by all computers with which you intend to share the drive. See "disadvantages" for details.
    FAT32 (File Allocation Table)
    • Read/Write FAT32 from both native Windows and native Mac OS X. [*]Maximum file size: 4GB.
    • Maximum volume size: 2TB
    • You can use this format if you share the drive between Mac OS X and Windows computers and have no files larger than 4GB.
  3. passey macrumors member

    Mar 28, 2013
    needs to be formmatted as exfat for you to write to from mac.

    mac can only read ntfs not write to.
  4. GGJstudios macrumors Westmere


    May 16, 2008
    See my post for instructions on how to write to NTFS. It's not necessary to reformat the drive as exFAT.
  5. braelynsmom macrumors newbie

    Nov 16, 2015
    I am having the same problems. I no longer own a pc but this external drive was originally used with my pc to back up files like photos, etc. If I reformat it to be writable by mac, will I lose my photos and such already on there in the old pc format? THanks!
  6. fa8362 macrumors 65816

    Jul 7, 2008
    Formatting a drive erases it, so yes, you'll lose everything on the drive if you don't copy it to another drive before you format.

Share This Page

5 May 21, 2013