iMac write-protecting my drives on its own

vchampea

macrumors newbie
Original poster
Jan 20, 2010
8
0
At some point my iMac decided to write-protect both my flash drive and my external HDD. As far as I know, I didn't do anything to make this happen. I am now unable to add or delete files on both USB devices. How can I fix this?
 

GGJstudios

macrumors Westmere
May 16, 2008
44,419
768
At some point my iMac decided to write-protect both my flash drive and my external HDD. As far as I know, I didn't do anything to make this happen. I am now unable to add or delete files on both USB devices. How can I fix this?
How are the drives formatted? Right-click on the drives and Get Info.
 

GGJstudios

macrumors Westmere
May 16, 2008
44,419
768
The external HDD is NTFS and the flash drive is FAT32.
NTFS (Windows NT File System)
  • Read/Write NTFS from native Windows.
  • Read only NTFS from native Mac OS X
    [*]To Read/Write/Format NTFS from Mac OS X, here are some alternatives:
    • For Mac OS X 10.4 or later (32 or 64-bit), install Paragon ($19.95) (Best Choice for Lion and Mountain Lion)
    • For Mac OS X 10.5 and later, including Lion, FUSE for OS X
    • For 32-bit Mac OS X, install NTFS-3G for Mac OS X (free) (does not work in 64-bit mode)
    • For 64-bit Snow Leopard, read this: MacFUSE for 64-bit Snow Leopard
    • Some have reported problems using Tuxera (approx $36), which is an enhanced version of NTFS-3G with faster performance.
    • Native NTFS support can be enabled in Snow Leopard and later versions, but is not advisable, due to instability.
  • AirPort Extreme (802.11n) and Time Capsule do not support NTFS
  • Maximum file size: 16 TB
  • Maximum volume size: 256TB
  • You can use this format if you routinely share a drive with multiple Windows systems.
 

vchampea

macrumors newbie
Original poster
Jan 20, 2010
8
0
The read and write permissions have come back on my external HDD for some reason, but I still can't do anything with my flash drive.

I have Paragon on my Mac; I've been using this HDD with my mac for a long time and suddenly I've been having problems. If I hadn't installed Paragon, I wouldn't have ever been able to write to my NTFS drive.

I didn't see the "Ignore ownership on this volume" option when I clicked on get info. I'll check again, but I'm pretty sure it's not there.
 

vchampea

macrumors newbie
Original poster
Jan 20, 2010
8
0
Ok, nvm about getting my read and write permissions back. I can read and write on my iMac but when I plug it into my windows laptop it's protected. Not sure why this would be or what to do.
 

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