
Plug your external drive into a USB spot on your computer.

#Partition a hard drive for mac and windows and time machine how to
How to format an external drive into multiple partitions using a Mac Before beginning, make sure to back up any important files that are already on your external drive onto another computer, as they will be deleted from the external drive in this process. There is no need to purchase two separate external drives for the computers.īelow are instructions on how to set up an external drive or large capacity USB flash drive into two partitions. This means that I can plug my external drive into my Mac and use one partition successfully for my Time Machine snapshots, then take the same external drive over to my Windows PC and use a different partition to back up my files there. By creating two partitions, I can designate one for use on Mac and set it to Mac OS Extended (Journaled) format, then designate the other for use on Windows machines and set it to exFAT. One solution is to create two partitions on a single external drive. Conversely, the traditional Windows file systems (NTFS, exFAT, FAT32) are not usable by Time Machine for creating backups. This works great for Mac, but then the entire drive is not usable by Windows computers. The problem with Time Machine though is that it only reads the Mac OS Extended (Journaled) file system, or HFS.

I like Time Machine because it is easy to use and makes a complete backup without having to individually go in and manually set up the files you want to back up. Mac uses Time Machine as its backup software, which is a very good program that takes a snapshot and backs up your entire computer. I have an external drive that I want to use to back up files on both my Mac and my Windows PC.
