Windows 8 and 8.1 Forums

Problem accessing a partition on an external hard drive

  1. #1

    Posts : 1
    Windows 8

    Problem accessing a partition on an external hard drive

    I'm wondering if anyone can help me out here; I have a strange situation.
    I'm running Windows 8 and I have an external hard drive that won't let me access 900GB or so of its 1TB. The drive mounts about 10GB, and the rest is nowhere to be found. If I go into Disk Manager I can see both of them: the 10GB reads as K:, FAT32, healthy, active, and primary partition, while the other 900 reads as healthy and primary partition, no letter or anything else. If I right-click it, my only options are delete volume and help. It's brand new, and the 900GB has nothing on it.
    Here's the catch: it's not my hard drive. This hard drive actually has to go back to a Mac user, NOT a Windows user, to reiterate. I've only got so long with this thing and I have to put some files on it. How can I make this 900GB usable for me so I can put files on it, and then usable for a Mac user?
    I'll provide any information you need. Thanks!

      My System SpecsSystem Spec

  2. #2

    USA, CA
    Posts : 191
    WIN 7 PRO x64, WIN 8.1 PRO x64

    the mac part is what got me to my answer, it is because that 900GB partition most likely in format mac os journaled and not seeable by windows at all and never will be it has to be fat 32, NTFS (which a mac can't write too without special drivers), or ExFAT which if you are sure that there is nothing on it then you can delete the whole partition setup of it and format the whole thing to ExFat as that is something mac and windows can read and write too.
      My System SpecsSystem Spec

  3. #3

    Posts : 328
    Windows 8.1 (x64)

    As rvcjew said the unaccesible partition is most probably formatted in hfs+ (the mac default format). You can either try accessing it with 3rd party tools :

    This might help you : Sharing Disks - Windows Products
    I've only tried Catacombae - HFSExplorer and a long time ago, it seemed to work fine and it's free.

    Or you can reformat it in a format accessible to both windows and mac. Mac can read NTFS but can't write to it, unless using 3rd party tools like NTFS-3G - Wikipedia, the free encyclopedia. Both OSes can read/write to FAT32, but this format is limited : max file size is 4GB, less efficient at storing data with big partitions (large cluster size). Or in exFAt as the poster above said which can be accessed with Mac OS X and Windows since XP.
      My System SpecsSystem Spec

Problem accessing a partition on an external hard drive

Similar Threads
Thread Forum
HP - G62 Hard drive deletimg partition problem
I have HP-G62 laptop with os.Win8.1 enterprise . I feel it sometimes have a delay in processing programs or it is slow , so I wanna erase all partitions & retuns the HDD to its original , then make a new partitions and installing fresh copy of windows . When I start the formatting process and...
General Support
Problem with External Hard Drive
I have several Western Digital External Hard Drives USB 3.0, and 2 are identical drives with different data. One works fine. The other is not recognized; the light comes on and you can hear it working but it will not show up in "this PC," disk manager or device manager. I was wondering if data...
Drivers & Hardware
External Hard Drive Recognition Problem
This seems to be a common issue so I'm sorry for making another thread, but all the resolutions don't seem to work for me so I need to customized assistance. I have a Seagate Goflex desk 500 gb external hard drive that I know works fine. I just recently purchased a Lenovo laptop with windows 8...
Drivers & Hardware
External Hard Drive Problem
Hi fellow members, I am in desperate need of advice. It's regarding my External HDD. I have a Western Digital My Passport 1 TB External Hard Drive. It was working perfectly till my friend took it from me and he returned with the HDD being dead. Dead in the sense that nothing was being...
General Support
Problem mounting partition on USB external hard drive
Hi folks, From searching the forum I've found a few threads describing a similar problem, but no solutions that work for my case. I have a USB hard drive which has two partitions: 1 x 100GB partition formatted as FAT32 1 x 900GB partition formatted as NTFS (these sizes aren't perfectly...
Drivers & Hardware
External hard drive shell broke, salvaged internal drive
I have a 2TB Western Digital My Book Essentials, it's filled with tons of old photos, movies, docs, games, and I'm scared to think of what else. The SATA to USB connector broke on it, so I took the drive apart and put it inside my computer. I opened up device manager because it wasn't showing up...
General Support
Problem with external Hard Drive
Hey guys, I finally installed Windows 8 on my iMac and all works fine but... I have an external hard drive (Hitachi Touro Desk Pro 3TB) and Windows can't recognize it. It's there but i can't open or read it. Sometimes it isn't listened in the explorer. It works in Windows 7. I also have a laptop...
Drivers & Hardware

Eight Forums Android App Eight Forums IOS App Follow us on Facebook