Press and hold Command + R to start the Mac in Recovery mode. Select Disk Utility > Continue . Choose your hard drive in the sidebar. Select Edit > Delete APFS Volume from the menu bar and Delete. Select your hard drive. Select Erase and name the drive. Under Format, choose a format.

Here’s how to format an SSD on Windows 10 using Disk Management: Install your new internal SSD, or connect your new external SSD via USB. Type diskmgmt.msc in the taskbar search box, press Enter, then select Create and format hard disk partitions . Right-click the drive you want to format, and click Format .
Solution #1: Gain ownership of the drive. When a disk cannot be opened due to "drive is not accessible. Access is denied" error, the possible reason is that you lack proper privilege. So this can be fixed via taking ownership of the drive. Step 1. In File Explorer, right-click the hard drive and choose "Properties".
2. Select the drive you want to format. All of your drives will appear in the left frame. Be careful when you're selecting your drive, as everything on the partition will be deleted when you format it. 3. Click the Gear button and select "Format Partition." This will open a new window for configuring the file system.
4. Mac won't boot and the internal hard drive not showing up; The internal hard drive of your Mac, also known as the startup disk, internal SSD or Macintosh HD, is used to store operating system files and user data, supporting Mac to work in a normal manner. Yet the startup disk or internal hard drive not showing up on Mac, no startup disk on . 376 496 473 342 187 263 375 39

internal hard drive won t format