Write protection

Discussion in 'HP Slate' started by ships10, Feb 10, 2011.

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  1. ships10

    ships10 Scribbler - Standard Member Senior Member

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    The card is a brand new Patriot 32 gb sdhc class 10 card.
    What is interesting is that after I quick formatted it to NTFS, I was able to
    transfer all my files and folders from the slate HD to the sd card.
    Now , it only works if it is in the slate. For some reason it won't accept any
    data if I use it in any of my other computers' sd card slot.
    I wonder why? I would like to use my desktop to transfer some large files coz the desktop is much faster.
     
  2. jnjroach

    jnjroach Technology Strategist Super Moderator

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    NTFS uses a security model that employs Discretionary Access Control Lists (DACLs). Your Slate "owns" the SD Card, when you access it another machine you should get a UAC prompt if the desktop is running Windows Vista or 7. If it is another OS you would need to take ownership of the card, how to do that depends on your desktop OS. XP or 2000 you can access the Security Tab by right clicking on the card and then selecting the Security Tab, click on Advanced and then Owner and take ownership (if you have disabled UAC on Vista or 7 you will use this same procedure).
     
  3. ships10

    ships10 Scribbler - Standard Member Senior Member

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    I have windows 7 in all my computers.
    I'll try it...thanks...is it the same procedure for Win 7?
     
  4. jnjroach

    jnjroach Technology Strategist Super Moderator

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    If it is Windows 7 with UAC enabled it should give you a UAC prompt, if it is disabled than it is the same as I described....
     
  5. ships10

    ships10 Scribbler - Standard Member Senior Member

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    I get no option for UAC prompt.
    Secondly , it will not let me take ownership other than in my slate.
    It will not accept my other computers' use names .
    It keeps saying it is write protected.
     
  6. jnjroach

    jnjroach Technology Strategist Super Moderator

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    Did that SD Card come with its own software? SD Cards are capable of Locking to one system...hence the secure in Secure Digital...

    On your slate you can go into the DACL and give everyone Read and/or Write to the Card
     
  7. ships10

    ships10 Scribbler - Standard Member Senior Member

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    No, no software.
    I did give everyone read and write....but when I take it to the other computers..it still gives the same message. Infact I also tried to give
    everyone the permission on the desktop with the desktop user home group name...but it will not accept any changes.
    I hope SDHC does not mean a secured headache!
     
  8. dgoodisi

    dgoodisi Scribbler - Standard Member

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    These permissions issues only manifest them-self when you format removable media as NTFS.

    NTFS tracks and monitors domain specific file/folder permissions. It is possible to format a SD card as NTFS and effectively lock it to a specific work station.

    FAT32 does not support these extended permissions.

    For these reasons I always use FAT32 when formatting removable media.

    If you insist on using NTFS on removable media then check out the following for more info.
    http://www.recalibrate.net/blog/2006/01/11/tweaks-ntfs-removable-media/
     
  9. ships10

    ships10 Scribbler - Standard Member Senior Member

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    So, shall I reformat it to FAT32?
    Would this impact anything else?
     
  10. DaveP

    DaveP Scribbler - Standard Member

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    Other than not offering you the security features that you don't seem to need (or want), you don't lose much. You gain the ability to use the SD card in just about anything with an SD slot. I have all my SD cards formatted with FAT32.
     
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