Easy IOReg Extraction (DSDT, SSDT, Video BIOS, ...)

[PikeRAlpha]

I use this one liner to get tables:

ioreg -c AppleACPIPlatformExpert -k 'ACPI Tables' -d 1 -rw0 | egrep 'ACPI Tables' | sed -e 's/.*"DSDT"=<//g' -e 's/>,.*//g'

 

[philip_petev]

I use this one liner to get tables:

ioreg -c AppleACPIPlatformExpert -k 'ACPI Tables' -d 1 -rw0 | egrep 'ACPI Tables' | sed -e 's/.*"DSDT"=<//g' -e 's/>,.*//g'

Yes, this one works too, with added | xxd -r -p > ~/Desktop/DSDT.aml at the end of the line

 

[SJ_UnderWater]

if you were going to completely ignore property traversal (which I dont recommend), you would only need

ioreg -rd1 -c AppleACPIPlatformExpert | grep -oE 'DSDT"=<[0-9a-f]+' | tail -c +8

Now that's entirely text-based and brittle. Add `xxd` as necessary

 

[Chocoholic]

I get "no nodes found" trying to dump vbios.

I used: ioreg -arw0 -d1 -n GFX0 | xpath '//key[.="vbios"]/following-sibling::*[1]/text()' | base64 -D -o ~/Desktop/vbios.rom

 

[SJ_UnderWater]

I note above "NVidia BIOS ROM (MUST boot with VBIOS=Yes, may have to replace display with GFX0 or similar)"

• Must be nvidia graphics
• Must boot with VBIOS=Yes
• Device name may be GFX0, display, or other, check your DSDT or IORegistry

 

[hectorox]

Hi,

Can someone help me to do a real dsdt dump from ioreg in yosemite?

I tried all of your commands, but there is no success. I get empty dsdt.aml files or message "no nodes found"
Regards