Daan De Meyer
047ae265cc
When the GPT partition table uses a different sector size than the device's native block size (e.g. 512-byte GPT on a 2048-byte CD-ROM booted via El Torito), the kernel cannot parse the partition table. Probe the GPT sector size upfront and configure blkid with the correct value so it always finds the partition table. If a sector size mismatch is detected, trigger a loop device to re-expose the device with the correct sector size and skip root partition discovery on the original device — it will happen on the loop device instead. Co-developed-by: Claude Opus 4.6 <noreply@anthropic.com>
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