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Warn about ExFAT boot limitations in Make2023BootableMedia - #482
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Warn before USB erase confirmation while retaining ExFAT for compatible firmware. Replace misleading oversized-FAT32 advice with guidance to use a partition of 32GB or smaller. Set the script metadata and startup banner to version 1.6, dated 2026-10-27. Fixes microsoft#424. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: d646aef3-e25b-46f8-8979-f7165880730a
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Aaron (apop5)
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Description
Fixes #424.
Warn before erasing USB media when ExFAT is selected, explaining its limited UEFI boot compatibility. Retain ExFAT for compatible firmware, but replace the oversized-FAT32 guidance suggesting ExFAT with a recommendation to use a partition of 32GB or smaller.
Update the script version and startup banner to 1.6, dated 2026-10-27.
For details on how to complete these options and their meaning refer to CONTRIBUTING.md.
How This Was Tested
Targeted Pester regression tests cover ExFAT warning ordering and case-insensitive selection, FAT32/default acceptance at 32GB, and FAT32/default rejection at 33GB without suggesting ExFAT.
Full media creation validation
Integration Instructions
N/A