[Alex601]

Today i have just received a usb flash drive from my friend and i put it into my mac it comes up as no name i try to change the name and i cant. After that i try to put a file into it and it says its like non changeable. so i tried it on my parents windows and it works fine so i was wondering if i could, reformat it or something.

Thanks, Alex

[tripletaker]

Navigate to Applications -> Utilities -> Disk Utility in the Finder.

Select the flash drive on the left column and click on the "Erase" tab. In the "Volume Format" select "MS-DOS File System" to work for both Windows and Mac in a FAT32 file format. Then click on the "Erase" button.

Note: This will erase everything in the flash drive. You can transfer the contents to a Windows computer, format it, and then move everything back. Most likely the flash drive is in a NTFS format which the Mac cannot read.

[zombie punk]

Originally Posted by tripletaker 

Most likely the flash drive is in a NTFS format which the Mac cannot read.

To be clear, you Mac can read NTFS, it just can't write to it.