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VBoot v2 beta feedback
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TOPIC: VBoot v2 beta feedback
#8753
Re:VBoot v2 beta feedback 7 Years, 12 Months ago Karma: 0
Using vboot-black-screen it does not boot at all.

I also tested with Win7 SP1 X86 where the memory
problem does not occur.

I forgot to say, yes its a 64-bit CPU - an I7-2700
on a Z68 chipset motherbord.
test1001
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#8754
Re:VBoot v2 beta feedback 7 Years, 12 Months ago Karma: 86
for win7, can you try to use windows boot manager to boot, instead of vboot, and check if memory problem still exists.

you can add vboot vhd using bcdedit, then boot it without using vboot loader, only the drivers are used in this case. I want to identify whether it is the loader causing this strange problems.
huisinro
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#8755
Re:VBoot v2 beta feedback 7 Years, 12 Months ago Karma: 0
Sorry, I didn't understand ... but the 'very-low-memory' problem does NOT
occur on Win7 X64 or X86, its only on XP 32-Bit.

But the other question was: Is it possible to reduce the large memory
usage ? (more than 2GB) on Windows 7 - 7.1GB free without VBoot and
5.8GB free when loaded from the VBoot VHD.
test1001
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#8756
Re:VBoot v2 beta feedback 7 Years, 12 Months ago Karma: 86
can you double check if running vboot v2? run devmgmt.msc, Storage Controller should display "VMLite VBoot HBA". In all of our test cases, it uses very little memory.

I wanted you to debug, by booting vhd using windows boot manager, instead of vboot GRUB2, to check if memory issue would go away. You can use native windows 7 boot manager to boot a vboot vhd (win7) file.
huisinro
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#8757
Re: VBoot v2 beta feedback 7 Years, 12 Months ago Karma: 0
huisinro wrote:
It's a bit involving, you need to delete a registry value from the maked vhd. These are the steps:

(1) mount the newly created vhd after make command, let's say mounted to Z:
(2) open regedit, click Local Machine, and load hive z:\windows\system32\config\SYSTEM to a key, e.g., S1
(3) now go to S1\ControlSet001\Services\vbootmp
delete the Group value
(4) unmount vhd

and try to reboot.

Let me know if this works, we will try to correct this bug. Group value is ok for other cases, only this sysprepared one has troubles.



OK I figured this out before I got a chnace to see your reply, and modified my install script

:: =========== z: mount ===============
vbootctl.exe mount "c:\vhd\winxp_pro_x86.vhd" z:

echo.
echo Remove group value of corrupted vbootmp
reg load HKU\ZZZ "z:\windows\system32\Config\system"
reg delete "HKU\ZZZ\ControlSet001\Services\vbootmp" /v "Group" /f
reg unload HKU\ZZZ

vbootctl.exe umount z:
:: =========== z: umount ===============


All commands completed successfully

However there is a new BSOD after this which is
STOP: c0000218 {Registry Hive failure}
The registry cannot load the hive (file):
\SystemRoot\System32\Config\SOFTWARE
or its log alternate.
It is corrupt, absent, or not writable.

So unfortunately not the fix.
ndog37
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#8758
Re:VBoot v2 beta feedback 7 Years, 12 Months ago Karma: 0
Yes, I'm using VBoot 2.0, its showing '...HBA' in device manager.

When using bootmgr to boot the Win7 VHD, the memory issue is completly
gone - I have now 7.0GB free - thats ok.
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