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Windows 10 

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, ex-FAT, NTFS, and so on).

Initialize a drive

Note: You typically only need to initialize a drive if the drive is new. If you cannot find an uninitialized drive in Disk Management, skip the following steps and try to partition your device.

1. Press the Windows key + R, type compmgmt.msc, and click Run to open Computer Management.

2. Navigate to Disk Management.

3. When prompted to, initialize your disk(s). If you are running Windows^® 7 or later and are using a drive larger than 2TB, initialize the disk(s) with GPT. If you are running an earlier version of Windows, initialize the disk(s) with MBR. For more information, visit the following FAQ: https://www.startech.com/support/faqs/technical-support?topic=hard-drives#mbr-vs-gpt.

4. Click OK.

Create a partition in a drive

Note: The following steps create an NTFS partition that uses the entire drive space. To use a different file system, select a different option in step 6.

1. Right-click Unallocated or RAW volume, and select New Simple Volume.

2. In the New Partition Wizard, click Next.

3. Select Primary partition.

4. Leave the partition size set to default, and click Next.

5. Assign a drive letter or leave it set to the default, and click Next.

6. Enter the following settings to format the partition:

• In the File System field, enter NTFS.
• Set the Allocation unit size to Default.
• In the Volume label field, enter <your name/reference>.
• Select the Perform a quick format check box.
• Clear the Enable file and folder compression check box.

7. Click Next > Finish.

The new drive should appear in Windows Explorer.

Mac OS

Before you can access a new or formatted drive in your operating system, you need to initialize it first and then create a partition on the drive. A partition defines an area of the drive to use for storing data. The partition uses a file system (for example, HFS+, ex-FAT, NTFS, and so on).

Initialize a drive

Mac OSX detects a drive that needs to be initialized and automatically prompts you to initialize the drive. If you are prompted to initialize the drive, click Initialize. If you are not prompted to initialize the drive and you cannot find the drive in Finder, you will need to create a partition on the drive.

Create a partition on a drive

Note: The following steps create an HFS+ (Mac OS Extended (Journaled)) partition that uses the entire drive space.

To create a partition on a new drive, complete the following:

1. Open Finder.

2. Navigate to Applications and click Utilities.

3. Open Disk Utility.

4. Select the new drive and click the Partition tab.

5. Click Options and verify that it is set to GUID Partition Table.

6. Enter a name for the partition.

7. Click Partition.

The drive should now be accessible in Finder.

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