What is a .GPT file?
GPT is the modern partition layout that organises a disk into volumes.
- Did you know
- GPT replaced the old MBR scheme, lifting the 2 TB disk limit in the 2000s.
- The GUID Partition Table was devised by Intel as part of the EFI specification and later folded into the UEFI standard.
- GPT keeps both a primary and a backup copy of the partition table for resilience, and typically supports up to 128 partitions per disk.
- To stop older tools from seeing a GPT disk as empty, a “protective MBR” is written in the very first sector ahead of the GPT header.
- What Analyser reads
- Inspect virtual-machine descriptors (VMware .vmx, VirtualBox .vbox, OVF/OVA), disc images (Nero .nrg, Alcohol .mds/.mdf, CloneCD), embedded firmware (Intel HEX, Motorola S-record, UF2, ELF/AXF, Device Tree Blobs, U-Boot uImage), partition tables (MBR/GPT with GUIDs), Linux filesystem superblocks (ext2/3/4, SquashFS, cramfs, romfs) and Windows imaging (WIM/ESD) - reading headers directly, no upload.
- Depth of analysis
- .GPT is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .GPT file
- Drag a .GPT file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.