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Broken UEFI implementations: Difference between revisions
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= El Torito boot =
UEFI boot from CD is controlled using El Torito boot records in the CD headers. Some machines get this wrong. In particular, one common set of known issues stem from early CSM packages which don't correctly interpret multiple El Torito boot catalog entries. The most common failure is the CSM's parser not recognizing the 0xEF platform ID, and instead of interpreting "I don't know this platform ID" correctly as "This is not for my platform" when there are multiple boot entries, some versions present you with a menu:<pre>1.▼
▲headers. Some machines get this wrong. In particular, one common set of known issues stem from early CSM packages which don't correctly interpret multiple El Torito boot catalog entries. The most common failure is the CSM's parser not recognizing the 0xEF platform ID, and instead of interpreting "I don't know this platform ID" correctly as "This is not for my platform" when there are multiple boot entries, some versions present you with a menu:<pre>1.
2.
Select CD-ROM boot type:</pre>
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