Windows FAT formatted MicroDrive

Discussion in 'Mac Basics and Help' started by monty77, Apr 6, 2006.

  1. monty77 macrumors 6502

    Joined:
    Mar 4, 2005
    Location:
    UK, South Coast
    #1
    I have a 4Gb Seagate MicroDrive that I want to use to store mp3s .. it's Windows FAT16 formatted (not FAT32) and each time I connect it makes the finder lock up until I disconnect the device. It's connected using a USB CF/MD adapter.

    I've had a google and OS X should support read/write to FAT16/32 so what gives? Anyone else have this problem?

    Cheers!
    Adam
     
  2. Temujin macrumors 6502a

    Temujin

    Joined:
    Oct 1, 2005
    Location:
    Copenhagen
    #2
    Is the drive powered by the USB port only, or do you use an extrenal power source? I have to connect my external 2.5 drive to both USB ports on my PB to make it work.
     
  3. monty77 thread starter macrumors 6502

    Joined:
    Mar 4, 2005
    Location:
    UK, South Coast
    #3
    It is... I suspected it might be a power issue too but it behaves the same in both a powered hub and a USB port in the back of the iMac.

    Cheers,
    Adam
     
  4. Mitthrawnuruodo Moderator emeritus

    Mitthrawnuruodo

    Joined:
    Mar 10, 2004
    Location:
    Bergen, Norway
    #4
    I have a small USB flash drive that's FAT16 formatted, and that works flawlessly (even after a trip in the washing machine ;)), so I second (or third) that it might be a power issue... or, less chance but worth looking into, maybe a bad disk? Have you tested it on any other machines (Mac or PC)?
     
  5. monty77 thread starter macrumors 6502

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    Mar 4, 2005
    Location:
    UK, South Coast
    #5
    Works with Windows laptop just fine, not tried another Mac yet ... might try another MD>USB adapter though.

    Cheers,
    Adam
     
  6. ericssonboi macrumors 6502

    Joined:
    Mar 15, 2005
    #6
    Have you tried pulling up Disk Utility when its pluged it to see if it can be formatted. Another thing is to check your System Info ... under the USB tab.. it should show up if it fully reads it (getting enough power).
     
  7. Eniregnat macrumors 68000

    Eniregnat

    Joined:
    Jan 22, 2003
    Location:
    In your head.
    #7
    It is likely a problem supplying power to the key, or perhaps it is damaged. Once you get the data off, you might consider formatting the drive in FAT32. That will give you longer file names with out too much loss of space on your drive.

    File Allocation Table, sometimes instead of Table people use Tree. This is a Microsoft protocol that has become the De facto standard. It can be used by most OSs, and Microsoft hasn't made it proprietary, unlike NTFS, or Apple's proprietary AFS, HFS, HFS+. I just wish that both M$ and Apple could get along better.

    The number after it is the number of bits that each cluster of data can contain. FAT12, 12 bits -FAT16, 16 bits etc... The limitations basically are in the size of the name for the file, and the size of any one particular file, and the total accessible drive size. It's not efficient for processing, but it is compact and space efficient, so a small sized medium (like old floppies or small flash cards) benefits from this compactness. The down side is that clusters tend to spread across the medium- this slows the access time, which can be improved by decrementing.

    NTFS (New Technology File Structure) and HFS (Hierarchical File System) allow a lot more versatility, but the down side is that they are very verbose. So the up side is that the cluster size can be variable, file names long and nested, and medium size large, there is a down side, that is the amount of information needed to store a file is large, and could potently exceed the size of very small storage media.
     
  8. balamw Moderator

    balamw

    Staff Member

    Joined:
    Aug 16, 2005
    Location:
    New England
    #8
    The problem is that the official size limit of a standard FAT16 file system is 2GB. 64K*32K=2048M=2GB.

    In order to get a 4GB FAT16 file system you need to use 64K clusters, which are beyond the FAT16 standard.

    http://www.microsoft.com/resources/.../en-us/dm_format_dynamic_volume.mspx?mfr=true

    Is there any real reason you need to keep it FAT16 and not FAT32?

    B
     
  9. monty77 thread starter macrumors 6502

    Joined:
    Mar 4, 2005
    Location:
    UK, South Coast
    #9
    WinXP can read and create a 4Gb FAT16 partition, Win 95&98 cannot

    Adam
     
  10. monty77 thread starter macrumors 6502

    Joined:
    Mar 4, 2005
    Location:
    UK, South Coast
    #10
    Solved now, thanks for all the help!!

    I bought a Belkin (normally Mac friendly products) 15in1 reader and it works just great.

    ..the card has to be FAT16 formatted as the device reading it (Becker car stereo) cannot read FAT32 :(

    As a slightly related topic does anyone know why when I drag over folders of mp3s from my iTunes folder I get a load of junk files named:

    ._01xxxxxx.mp3

    ..as well as the actual mp3 files? Some folders do it, some dont. Of course these dont show in finder, only when I connect the drive to a Windows PC.

    Cheers!
    Adam
     
  11. Mitthrawnuruodo Moderator emeritus

    Mitthrawnuruodo

    Joined:
    Mar 10, 2004
    Location:
    Bergen, Norway
    #11
    Those ._files are all the resource information from Mac OS X (icon, placement in Finder, etc). You need to (at least temporarily) turn off the "Show hidden files" in Windows to get rid of them (well, you won't really get rid of them, but you won't see them either... ;)).

    Edit: You can also try FinderCleaner to "wash" the drive before disconnecting from the Mac... (Remember to test with caution, i.e. backup first... ;))
     
  12. monty77 thread starter macrumors 6502

    Joined:
    Mar 4, 2005
    Location:
    UK, South Coast
    #12
    I can't tell my car stereo to ignore them so I'll give the finder cleaner a shot .. thanks!!!

    Adam
     

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