This is best done using Disk Utility on OS X. This means that you must delete both existing partitions. You want to set the drive to have just one partition which can be read and written to by both OS X and Windows. There are now two partitions on the thumb drive, one a HFS+ partition of about 4 GB and one a FAT32 partition of about 200 MB. The Windows system formatted the available space to FAT32. This is because the formatting process using Disk Utility didn't use the entire space available on the thumb drive.

It is possible to get an extension, such as the (payware) MacDrive which will allow Windows to read and write HFS+ volumes.Īnd when i formats it shows The Size 200MB and when i plugs it to the mac after that it shows 2 partition in the memory That is because when you formatted them on the Mac, OS X used HFS+ for the file system (the default on a Mac) and Windows doesn't know about HFS+. It is possible to use an extension, such as (freeware) NTFS-3G, which will give OS X the ability to write to NTFS.Īnd i wanted to use them on my mac so i just formatted them with disk utillity and now when i plugs them into the pc it says you need to format it to use NTFS lacks those problems, but out of the box a Mac can read from but can't write to a NTFS partition. FAT32 is less limited, but still has problems. They were formatted NTFS because it's a bad idea to format large volumes as FAT16, which is the file system set on most thumb drives. I Have 2 Memory Sticks 8GB and 4GB they were formatted to ntfs

Mac memory stick