{ "_comment": "See http://www.chromium.org/chromium-os/building-chromium-os/disk-layout-format", "metadata":{ "_comment": "Partitions are aligned to 2MB (4096 blocks). For the sake of VHD disks sizes should align to *both* 2MB and a CHS cylender boundry for the common 16H 63S geometry (16*63 = 1008 blocks). The least common multiple of 4096 and 1008 is 258048 blocks.", "part_alignment": 4096, "disk_alignment": 258048, "block_size": 512, "fs_block_size": 4096 }, "layouts":{ "base":{ "1":{ "label":"EFI-SYSTEM", "fs_label":"EFI-SYSTEM", "type":"efi", "blocks":"262144", "fs_type":"vfat", "mount":"/boot", "features": [] }, "2":{ "label":"BIOS-BOOT", "type":"bios", "blocks":"4096" }, "3":{ "label":"USR-A", "uuid":"7130c94a-213a-4e5a-8e26-6cce9662f132", "type":"flatcar-rootfs", "blocks":"2097152", "fs_blocks":"260094", "fs_type":"btrfs", "fs_compression":"zstd", "mount":"/usr", "features": ["prioritize", "verity"] }, "4":{ "label":"USR-B", "uuid":"e03dd35c-7c2d-4a47-b3fe-27f15780a57c", "type":"flatcar-rootfs", "blocks":"2097152", "fs_blocks":"262144" }, "5":{ "label":"ROOT-C", "uuid":"d82521b4-07ac-4f1c-8840-ddefedc332f3", "type":"blank", "blocks":"0" }, "6":{ "label":"OEM", "fs_label":"OEM", "type":"data", "blocks":"262144", "fs_type":"btrfs", "fs_compression":"zlib", "mount":"/oem" }, "7":{ "label":"OEM-CONFIG", "type":"flatcar-reserved", "blocks":"131072" }, "8":{ "type":"blank", "label":"flatcar-reserved", "blocks":"0" }, "9":{ "label":"ROOT", "fs_label":"ROOT", "type":"flatcar-resize", "blocks":"4427776", "fs_type":"ext4", "mount":"/" } }, "vm":{ "9":{ "label":"ROOT", "fs_label":"ROOT", "blocks":"12943360" } }, "azure":{ "9":{ "label":"ROOT", "fs_label":"ROOT", "blocks":"58875904" } }, "vagrant":{ "9":{ "label":"ROOT", "fs_label":"ROOT", "blocks":"33845248" } }, "onmetal":{ "7":{ "label":"config-2", "fs_label":"config-2", "type":"data", "fs_type":"ext2" } }, "container":{ "1":{ "type":"blank" }, "2":{ "type":"blank" }, "3":{ "type":"blank" }, "4":{ "type":"blank" }, "5":{ "type":"blank" }, "6":{ "type":"blank" }, "7":{ "type":"blank" }, "8":{ "type":"blank" }, "9":{ "label":"ROOT", "fs_label":"ROOT", "type":"0fc63daf-8483-4772-8e79-3d69d8477de4", "blocks":"12582912" } } } }