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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Repository

rS FreeBSD src repository - subversion

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Buildable 4985
Build 5051: arc lint + arc unit

Event Timeline

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.

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.

Revision Contents
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Path

Size

sys/

boot/

i386/

libi386/

biosdisk.c

23 lines

Diff 19867

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sys/boot/i386/libi386/biosdisk.c

bd_int13probe() should check extended info if sector info is badClosedPublicActions