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Timer delay for installing Win2K guest no longer works

Posted: 6. Jan 2009, 01:09
by runbei
In earlier versions of VB, I've been able to install a Win2K guest by using the time delay command specified on page 132 of the user guide:

Code: Select all

11.2.2 Windows 2000 installation failures
When installing Windows 2000 guests, you might run into one of the following issues:
• Installation reboots, usually during component registration.
• Installation fills the whole hard disk with empty log files.
• Installation complains about a failure installing msgina.dll.
These problems are all caused by a bug in the hard disk driver of Windows 2000.
After issuing a hard disk request, there is a race condition in the Windows driver code
which leads to corruption if the operation completes too fast, i.e. the hardware interrupt
from the IDE controller arrives too soon. With physical hardware, there is a
guaranteed delay in most systems so the problem is usually hidden there (however it
should be possible to reproduce it on physical hardware as well). In a virtual environment,
it is possible for the operation to be done immediately (especially on very fast
systems with multiple CPUs) and the interrupt is signaled sooner than on a physical
system. The solution is to introduce an artificial delay before delivering such interrupts.
This delay can be configured for a VM using the following command:
VBoxManage setextradata VMNAME
"VBoxInternal/Devices/piix3ide/0/Config/IRQDelay" 1
This sets the delay to one millisecond. In case this doesn’t help, increase it to a value
between 1 and 5 milliseconds. Please note that this slows down disk performance.
After installation, you should be able to remove the key (or set it to 0).
This no longer works. In Linux Mint, it results in a series of error messages (failed calling virtualbox->FindMachine(NBstr(argv[a0]... Primary RC...file not accessible or erroneous file contents... could not find a registered machine named win2k...]

I've succeeded in installing a Win2K guest by copying the Windows install disk to the Mint desktop as an ISO and using it for the install. But now the Brasero disk copy function fails to create an ISO file. (Brasero seems very buggy.)

Any suggestions? Thanks.