Some enhancement on cryptpilot-convert for building UKI image #69
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The `objcopy` operation was failing with "No space left on device" when patching the UKI file directly on a small EFI partition (/boot/efi). Key changes: 1. Move dracut UKI generation and `objcopy` patching to `/tmp` to avoid partition size constraints. 2. Clean up existing EFI entries and `NvVars` earlier to release space. 3. Copy the finalized UKI image to the destination after patching is complete. Signed-off-by: Kun Lai <laikun@linux.alibaba.com>
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- Mark the rootfs partition as read-only using `tune2fs -O read-only`. - Automatically add `ro` and `noload` flags to the root partition in `/etc/fstab`. - Ensure the fstab modification is idempotent and handles various formatting styles. Signed-off-by: Kun Lai <laikun@linux.alibaba.com>
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