Format hard disk mac and windows10/25/2023 ![]() If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device. Secure erase options are available only for some types of storage devices. Some older drives are formatted specifically for PCs, some. Newer Seagate and LaCie branded external drives come preformatted with the exFAT file system, which allows it to be used on both Mac and Windows without reformatting the drive. (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK. This article explains about file systems and provides instruction to format a drive on Windows and Mac. ![]() If the Scheme pop-up menu isn’t available, make sure you selected the storage device you want to erase-it’s at the top of the hierarchy.Ĭlick the Format pop-up menu, then choose a file system format. The instructions are dependent on whether the hard drive is already formatted, so we’ll cover both ways. Ĭlick the Scheme pop-up menu, then choose GUID Partition Map. To open Disk Management, click the Windows icon, type disk, then click Create and format hard disk partitions. In the sidebar, select the storage device you want to erase, then click the Erase button. Right-click the unallocated space to select 'Create. Click 'OK' after dragging one of the partition ends to reduce the partition and make room for the new partition. If you want to erase any other type of storage device: Double-click Disk Utility in the /Applications/Utilities folder. Right-click an existing partition with much free space to select 'Resize/Move.' Step 3. ![]() ![]() Note: If you want to get your Mac ready to trade in, sell, or give away, and your computer is a Mac with Apple silicon or an Intel-based Mac with an Apple T2 Security Chip, use Erase Assistant. ![]()
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