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#Usb drive formatted for mac open on windows how to#
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If your Mac has an AMD video card and is having graphics issues in Windows, you might need to update your AMD graphics drivers instead.

Your Mac starts up to a black or blue screen after you've installed Windows.

You get a message that your PC has a driver or service that isn't ready for this version of Windows.

You get an alert that Apple Software Update has stopped working.

You have issues with bluetooth or Wi-Fi in Windows.

You can't adjust the brightness of your built-in display in Windows.

One or more screen resolutions are unavailable for your display in Windows.

The built-in microphone or camera of your Mac isn't recognised in Windows.

You can't hear audio from the built-in speakers of your Mac in Windows.

Your Apple mouse, trackpad or keyboard isn't working in Windows.įorce Touch isn't designed to work in Windows.

If that doesn't happen or you experience any of the following issues while using Windows on your Mac, follow the steps in this article.

#Usb drive formatted for mac open on windows install#

When you install Microsoft Windows on your Mac, Boot Camp Assistant automatically opens the Boot Camp installer, which installs the latest Windows support software (drivers). With a modern flash drive, it’s unlikely you’ll notice much difference either way, so it’s up to you whether you stick to the 4KB standard or pick a smaller allocation unit size.Boot Camp requires a Mac with an Intel processor. Splitting up a file into more chunks gives the drive controller more work to do, and makes it more likely that the data will end up fragmented into lots of blocks scattered about your disk, making it slower to access. However, this can have a negative impact on performance, especially if you’re using a mechanical disk drive. If you plan to save lots of small files to your disk then reducing the allocation unit size might be a good idea. In practice though, most of the files on your USB drive will probably be many megabytes in size, so the impact of wasting a few kilobytes here and there is negligible. A file that’s only 1KB in size will still occupy 4KB of space, while a 5KB file will take up 8KB, and so on. Slicing up disk space in this way isn’t perfectly efficient. Simply put, this determines the size of the chunks in which storage is allocated for your files: if you choose 4096 bytes (the NTFS default), every file that’s saved to that disk will be allocated space in multiples of 4KB.

#Usb drive formatted for mac open on windows how to#

How to format a USB drive: allocation unit sizeĪs well as choosing a disk format, Windows also invites you to specify an “Allocation unit size”. For historical reasons, Windows won’t offer FAT32 as an option if your disk is larger than 32GB, but you can format a disk of any size by opening a Command Prompt and typing format h: /fs:fat32 /q, where h: is the letter of your removable drive and the /q parameter specifies a quick format – assuming you don’t want to wait around for Windows to check each sector of the drive for errors.

On a Mac, you can format any disk as FAT32 by simply choosing “MS-DOS (FAT)” from the dropdown menu in Disk Utility before you click Erase…. This is supported by all versions of Windows and OS X (as well as Linux), but it has the drawback of not supporting individual files larger than 4GB – which can be a pain if you work with large video files or databases. If you need compatibility with systems that are older than this, you’ll need to fall back to the ancient FAT32 format. In most cases we recommend you select Microsoft’s exFAT format: this will give you full read and write access in both Windows (Vista or later) and OS X (Snow Leopard 10.6.5 or later). You can choose this from the drop-down menu in Windows’ Format dialogue, or in the Erase pane of Disk Utility. Identify your disk in the list, then right click on the volume and choose. To use your USB disk on both Windows and OS X, therefore, you’ll need to use a different filesystem. (On Windows 7) right click My Computer Manage Disk Management (under Storage).

#Usb drive formatted for mac open on windows drivers#

There are free drivers available, but again these are limited to read-only access. However, neither is suitable if you want to move files back and forth between Macs and PCs: OS X can read NTFS volumes, but it can’t write to them, while Windows in its default configuration can’t access HFS+ disks at all. These formats are sensible defaults because they support all the features of their respective operating systems, such as native compression and encryption.

#Usb drive formatted for mac open on windows mac os#

If you follow the instructions above then Windows will, by default, format your disk using Microsoft’s NTFS filesystem, while a Mac might suggest the Mac OS Extended filesystem.