swysocki / gpt-image Goto Github PK
View Code? Open in Web Editor NEWTool to create GPT disk image files
License: MIT License
Tool to create GPT disk image files
License: MIT License
Output information about the GPT table for each class. JSON would be useful!
Partition entry field (0x50) is hard-coded to the max entries 128*128. Set this field to the actual count of partition entries.
Allow the modification of partition information:
A GUID is generated for each GPT header. The GUID needs to match for both the primary and backup header. This creates a corrupt disk image.
Allow bytes to be written to a partition
Allow the removal of a partition from disk.
Replace the Entry module with a simpler pattern for constructing the byte structure based on the struct.Struct
object. Something similar to what the gptsum
project uses: https://github.com/NicolasT/gptsum/blob/main/src/gptsum/gpt.py
Disk space is finite. There needs to be a check to ensure there is enough room to add a partition.
Use the table Mnemonic names from the EFI Spec: https://www.intel.com/content/dam/doc/product-specification/efi-v1-10-specification.pdf as class attributes.
This will make it easier when comparing with the EFI spec.
Sector size is hard-coded to 512 bytes. This is an obvious limitation ๐จ
self.image_path.touch(exists_ok=False)
does not allow overwriting the image file. This should be an option.
sfdisk
reports:
GPT PMBR size mismatch (4096 != 4095) will be corrected by write.
Check to ensure a partition's length will fit within the disk and not overwrite another
Check to ensure it fits within the boundaries CONSIDERING the backup GPT table at the end of disk
Opening an existing disk is a bit cumbersome because a Disk instance needs to be created. It will be less confusing to call
Disk.open('my-image.gpt')
and return a Disk instance.
enable setting partition attributes such as read-only and hidden
Allow starting a partition at a specific LBA. Make necessary calculations for alignment.
Validate the generated image is valid using an external tool such as sfdisk
or sgdisk
.
Add this test to CI.
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