What is the default partition scheme for most non-Mac computers?

The default partition scheme for most non-Mac computers is Master Boot Record (MBR). MBR has been a long-standing standard for disk partitioning, widely used in PCs and compatible systems. It supports partitioning of disks up to 2 terabytes in size and allows for a maximum of four primary partitions. This makes it particularly suitable for older systems or those running Windows, where MBR is traditionally utilized.

GUID (Globally Unique Identifier) is more common in newer systems, especially those that use the UEFI (Unified Extensible Firmware Interface) instead of BIOS, providing advantages like support for larger disks and more partitions. However, MBR remains the default for many existing systems and has been the foundational partitioning structure for non-Mac systems for years.

Apple Partition Map (APM) is primarily used in older Macintosh computers, particularly those that run on PowerPC architecture, and is not the default for non-Mac systems. HFS+ is a filesystem format used by macOS, not a partition scheme, which also differentiates it from MBR. Hence, MBR is recognized as the standard choice for partitioning in most non-Mac settings.