Cant copy over 4 gig at a time

I have a Western Digital My Book 250GB USB 2.0 External HD which i bought to backup my movies that i make, most of the files are around 5gig but when i try to copy them accross it says there is not enough space left on the drive. This is odd as there is over 200gig still free.
I can copy accross my smaller files with no problems. Is there a size limit on files that you can transfer using usb? Does anyone know why this is happening and how can i resolve it?
12 answers Last reply
More about cant copy time
  1. What's the file format on the 250g?

    FAT32 has a file size copy restriction of 2g.
  2. just bought a 160GB yesterday. comes with FAT32 format. Guessing so it can be used for linux and so forth.

    To the OP, youll have to reformat to NTFS.
  3. If indeed the external drive is formatted FAT32, that is the reason for your problems. FAT32 has a 4GB file size limit.

    You do not have to reformat the drive to change file systems. You can convert the file system without losing any data by using the "convert" command line utility built into Windows XP.

    Open a command prompt, and type "convert /?" (without the quotes) at the command line to see all the command line options.
  4. yep, my mistake definitely dont reformat. these external drives always seem to have issues when you reformat them.

    go with the conversion first.
  5. I learned today that FAT32 can only get 4gb's at the time.

    I always say it, something new to learn everyday :D
  6. Not perfectly true.

    4g if it's an .avi file - 2g on all others.
  7. That's stupid all data is all the same. I've had this problem with DVD ISO's, movie files and all sorts. I turned my 250 G sata into a FAT32 drive so I could use it more easily with linux and found that my ISO (for fear i think it was) was to big to move around.
  8. Thanks for all the help. I have temporarily solved the problem without converting my drive. I used win rar to zip up my 5gig files which ended up around 4.2gig which copied across without any problems so maby fat32 can cope with 4gig plus in certain formats only? I think i will go ahead and convert my drive though as zipping the files is taking an hour a time.
  9. about the fat32 support size:

    http://en.wikipedia.org/wiki/Fat32

    we are talking about max 4 GiB
    this not exact the same as 4 GB

    i've tried to do the math, but failed :oops:
  10. 4GiB= 4096 MB = 4194304 KB = 4.294967e+009 bytes

    or:

    34359738368 bits
    4294967296 bytes
    4194304 kilobytes (abbreviated as KB or Kb)
    4096 megabytes (abbreviated as M or MB)
    4 gigabytes (abbreviated as G or GB)
    0.003906 terabytes
    0.0000038 petabytes
    0.00000000 exabytes
  11. just multiply 4 by 1024 3 times, you get 4 294 967 296, or roughly 4,3
  12. Quote:
    4GiB= 4096 MB = 4194304 KB = 4.294967e+009 bytes

    or:

    34359738368 bits
    4294967296 bytes
    4194304 kilobytes (abbreviated as KB or Kb)
    4096 megabytes (abbreviated as M or MB)
    4 gigabytes (abbreviated as G or GB)
    0.003906 terabytes
    0.0000038 petabytes
    0.00000000 exabytes


    O_o!!!
Ask a new question

Read More

Hard Drives Western Digital USB Storage