This is a GPT (GUID Partition Table) virtual disk file creator library that follows the UEFI Specification Version 2.9 (March 2021) document accessible from here.
In the root directory of the repository, run the following commands:
cmake -S src -B build
cmake --build build
Now you'll have an executable which you can run by executing:
./build/ThatDiskCreator
Which will generate a file called disk.hdd in the same directory it was run from.
You can change the parameters for the output in src/main.c.
This library takes in a struct of type disk_options_t and outputs a virtual disk file.
The parameters are as follows:
typedef struct {
// 0 indicates "inferred", max size of about 4 terabytes, i.e. 4*1024^2 megabytes
disk_size_b_t disk_size_b;
// 512 is the only supported value, however multiples of 512 up to 4096 are allowed only experimentally
block_size_b_t logical_block_size_b;
// array of partition sizes in megabytes, max partition size of 8 terabytes
partition_size_b_t partition_sizes_b[GPT_PARTITION_ARRAY_LENGTH];
// index of EFI System Partition in the partition array, negative values indicate no ESP
partition_index_t efi_system_partition_index;
// index of Partition with its boot flag set, negative values indicate no partitions with boot flag
partition_index_t boot_partition_index;
} disk_options_t;