Currently Being ModeratedJan 13, 2013 6:01 AM (in response to Henry R)
Nope, the secure access feature can be duplicated by Apple's own Disk Utility which allows you to create your own AES encrypted disk image to store data on. If encrypting your data on the Flash drive is what you want. And before reformatting it, copy all the data of your own back to the Mac. Otherwise you'll lose that data. This tip explains what the different formatting will do for compatibility, and link to a tip on installing Windows as well.
But you have to make a choice here, how transportable your data is. Read this tip thoroughly and choose the formatting you want. FAT32 won't give you full access to the 64GB. But ExFAT will, NTFS will (if you add an NTFS writing plugin to your Mac), and so will HFS+: Apple's encryption only works if you only use HFS+ and never use Windows.
Sansdisk .exe is useful if you just want to use it in Windows only environment. You may want to contact Sansdisk to discover if their Mac software supports both platforms or not. If it doesn't then it really doesn't matter.OS X Mountain Lion, * Links may give me compensation
Currently Being ModeratedJan 13, 2013 8:52 AM (in response to Henry R)
What if I do nothing with the SanDisk 32GB flash drive. It still has the preinstalled Windows stuff on it. It still has all my photos on it. Can I keep it as is, with the WIndows stuff on it? Or will having the WIndows stuff on it eventually cause problems?
Since it's worked so far, it should be ok. I don't know if it can cause problems later since I don't run anything Windows, so I'm not familiar with it.
If you want to change formatting, a brody gave you all the options. If you reformat, that will wipe your contents - so you would have to temporarily move your files elsewhere and then move them back.
And thanks, a brody, for the explanation on the locked icon - being unfamiliar with Windows, I did not know that.
Currently Being ModeratedJan 13, 2013 9:02 AM (in response to Henry R)
Are you taking about a SD card and you are putting it in the SD Reader, Slot, on the side of the Mac? If so then NO it is not supported. Those cards are eXtended Capacity, XC, and the reader on your Mac does not support that type of card.
You can get a external SDXC card reader almost anywhere that will support it. It would connect to your Mac by USB cable. Or you may find one that work with FireWire.
Currently Being ModeratedJan 13, 2013 9:20 AM (in response to babowa)
But ARE We? I see no link to the actual Thumb drive the OP is talking about and since the Mac is Not seeing it that would lead me to think it is not what you are thinking a Flash Drive is but a SD card.
Or simply the OP has a problem with his USB port or ports.
Currently Being ModeratedJan 13, 2013 9:32 AM (in response to babowa)
Ok I haven't read the whole thread, So it is showing up in Disk Utility then?
You format a SD card the same way as any other drive. But if it is showinig in Disk Utility then it is more then likely not a XC SD card. As that wouldn't even show in DU as the reader can't see/read that type SD card.
OK I'm out of here.
Good Luck to the OP.