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Differential D7718

bd_int13probe() should check extended info if sector info is bad
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Authored by tsoome on Aug 31 2016, 12:33 PM.
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allanjude
imp
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rS305178: bd_int13probe() should check extended info if sector info is bad
Summary

Joyent found the issue with some Dell systems and specific USB sticks,
where UEFI+BIOS emulation is reporting bad sector data from INT13 AH=08.

This patch will allow int13 EDD info to be probed and will try to
use EDD info.

Also, the grub2 has note that some BIOS does return total sectors 0 from EDD,
this should be checked and computed size is used, if needed.

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rS FreeBSD src repository - subversion
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tsoome updated this revision to Diff 19867.Aug 31 2016, 12:33 PM
tsoome retitled this revision from to bd_int13probe() should check extended info if sector info is bad.
tsoome updated this object.
tsoome edited the test plan for this revision. (Show Details)
tsoome added reviewers: allanjude, imp.
tsoome added a subscriber: peter.
allanjude accepted this revision.Aug 31 2016, 4:21 PM
allanjude edited edge metadata.

nice work

Approved for commit.

This revision is now accepted and ready to land.Aug 31 2016, 4:21 PM
Closed by commit rS305178: bd_int13probe() should check extended info if sector info is bad (authored by tsoome). · Explain WhySep 1 2016, 6:35 AM
This revision was automatically updated to reflect the committed changes.

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PathSize
head/
sys/
boot/
i386/
libi386/
23 lines

Diff 19915

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head/sys/boot/i386/libi386/biosdisk.c

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