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Critical Error trying to launch Ubuntu (32 bit and 64 bit)

Posted: 4. Jun 2012, 23:56
by kotpal
I tried disabling VT-x/AMD-v for 32bit Ubuntu (64bit advises that it will be enabled anyway even if I disable).

Attached is the log.

Can someone help me how to troubleshoot and resolve this issue?

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 00:00
by Perryg
turn off EFI booting.

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 00:39
by kotpal
EFI booting is already off.

I had to restart my host machine (windows 7, 64-bit) because I have installed some updates which required a restart.

I restarted the Ubuntu VM and it chugged along a few more minutes than usual and then displayed the critical error dialog box again.

Attached is the new log file.

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 00:47
by Perryg

Code: Select all

Commandline: "C:\Program Files\Oracle\VirtualBox\VirtualBox.exe" --comment macosxserver --startvm 8912fe3e-bb4e-4b9d-92eb-901fd7c17e70 --no-startvm-errormsgbox
Unexpected trap during early EFI bootstrap!!
You must have submitted the wrong log file then.
Plus running a Mac in non-Mac hardware & host is not supported.
Please read http://forums.virtualbox.org/viewtopic.php?f=22&t=31104

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 00:57
by kotpal
Wrong log file. Sorry about that. I don't know how I picked that.

Anyway, I am still unable to boot Ubuntu in Virtual Box.

I can't attach the new log file because it is > 128KB!

I truncated the log to show the guru meditation (!) assertion that I saw with the critical error dialog.

How can I troubleshoot this? I have tried changing various options but with no resolution.

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 01:00
by Perryg
I need the entire log file. Compress it and post (as an attachment)

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 01:19
by kotpal
Compressed and posted the log file.

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 01:37
by Perryg
00:00:00.657 RamSize <integer> = 0x0000000100000000 (4 294 967 296, 4 GB)
00:00:00.657 IOAPIC <integer> = 0x0000000000000001 (1)
00:00:01.666 HWACCM: No VT-x or AMD-V CPU extension found. Reason VERR_VMX_MSR_LOCKED_OR_DISABLED
00:00:01.666 HWACCM: VMX MSR_IA32_FEATURE_CONTROL=1

32 bit is restricted and yes you can use more memory with pae and io-apic being on, but for this you *must have VT-x enabled.
You have two choices.
  • 1) turn on hardware-v in your bios
    2) turn off VT-x (which means you don't nee io-apic and can not assign more than 3GB of memory) probably a little less.
Same thing for 64-bit guests. You must enable hardware-v

Re: Critical Error trying to launch Ubuntu (32 bit and 64 bi

Posted: 5. Jun 2012, 05:25
by kotpal
That was it.

I enabled Hardware Virtualization, but Windows 7 gave me grief initially (won't start, but did restart after a repair) and I am able to run Ubuntu (or at least start the installation of Ubuntu) in the VirtualBox now.

Thank you very much Perryg.