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  1. #1


    Member Since
    Aug 06, 2012
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    7
    USB on macbook pro 2011
    Hi,

    I have a macbook pro 2011. I have transferred some pictures into my WD passport (macbook version) and brought it into a photography shop for digital printing today but the staff was unable to open the files (none of my files are viewable, since the operating system of the computers is windows, I assume)

    However, when I got back, I quickly plugged in my external hard disk to check if any files are missing. After that, I tried to transfer the pictures into a USB pen drive, so that the pictures can be viewed at the shop for digital printing. The problem now starts, as the USB drive can only be READ only, which is strange, because I was still able to edit my files on the same USB drive before. (yesterday, same day etc)

    I tried to erase that USB pen drive on disk utility but all options are greyed out.
    What's wrong??

    THanks

  2. #2

    mrplow's Avatar
    Member Since
    Oct 01, 2007
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    Specs:
    27" iMac i7 (2011) 10.11, Mac Mini i5 (2014), iPhone7, Apple Watch, iPad Pro 9.7, AppleTV (4)
    can you post a screenshot from disk utiliy?

    I'd suggest you need to re-partition and format the pendrive by select the pendrive at 'disk' level not partition level
    Not been around these parts for a while. Trying to change that . .

    Please use the reputation system if you think you've been helped - bottom left of this post

  3. #3

  4. #4

    mrplow's Avatar
    Member Since
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    Specs:
    27" iMac i7 (2011) 10.11, Mac Mini i5 (2014), iPhone7, Apple Watch, iPad Pro 9.7, AppleTV (4)
    With the drive selected (in your screenshot) go to the erase tab and select msdos fat as the format
    Not been around these parts for a while. Trying to change that . .

    Please use the reputation system if you think you've been helped - bottom left of this post

  5. #5


    Member Since
    Aug 06, 2012
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    no I couldn't. All options are greyed out (refers to the screenshots), sorry that the images could not be viewd but I believe they can be now

  6. #6

    mrplow's Avatar
    Member Since
    Oct 01, 2007
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    Specs:
    27" iMac i7 (2011) 10.11, Mac Mini i5 (2014), iPhone7, Apple Watch, iPad Pro 9.7, AppleTV (4)
    What sort of flash drive do you have?

    Does it have a write protect tab/switch?
    Not been around these parts for a while. Trying to change that . .

    Please use the reputation system if you think you've been helped - bottom left of this post

  7. #7


    Member Since
    Aug 06, 2012
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    unfortunately no is there nothing that I can do about it?
    I'm just really surprised how the USB pendrive becomes READ ONLY out of a sudden

  8. #8

    mrplow's Avatar
    Member Since
    Oct 01, 2007
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    Specs:
    27" iMac i7 (2011) 10.11, Mac Mini i5 (2014), iPhone7, Apple Watch, iPad Pro 9.7, AppleTV (4)
    Do you have another machine you can try it in?
    Not been around these parts for a while. Trying to change that . .

    Please use the reputation system if you think you've been helped - bottom left of this post

  9. #9


    Member Since
    Aug 06, 2012
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    ya I tried it on my brother's desktop (windows) but I also failed to reformat it because it is READ ONLY according to the warning message

  10. #10

    mrplow's Avatar
    Member Since
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    Specs:
    27" iMac i7 (2011) 10.11, Mac Mini i5 (2014), iPhone7, Apple Watch, iPad Pro 9.7, AppleTV (4)
    Then there's either a write protect switch or the device is failing
    Not been around these parts for a while. Trying to change that . .

    Please use the reputation system if you think you've been helped - bottom left of this post

  11. #11


    Member Since
    Aug 06, 2012
    Posts
    7
    okay, thanks

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