Sun-microsystems VIRTUALBOX VERSION 3.1.0_BETA2 Manuale Utente Pagina 152
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9 Advanced topics
dmidecode -t0
and the DMI system information can be obtained with
dmidecode -t1
9.16 Configuring the guest time stamp counter (TSC)
to reflect guest execution
By default, VirtualBox keeps all sources of time visible to the guest synchronized to a
single time source, the monotonic host time. This reflects the assumptions of many
guest operating systems, which expect all time sources to reflect “wall clock” time. In
special circumstances it may be useful however to make the TSC (time stamp counter)
in the guest reflect the time actually spent executing the guest.
This special TSC handling mode can be enabled on a per-VM basis, and for best
results must be used only in combination with hardware virtualization. To enable this
mode use the following command:
VBoxManage setextradata "My VM" "VBoxInternal/TM/TSCTiedToExecution" 1
To revert to the default TSC handling mode use:
VBoxManage setextradata "My VM" "VBoxInternal/TM/TSCTiedToExecution"
Note that if you use the special TSC handling mode with a guest operating system
which is very strict about the consistency of time sources you may get a warning or
error message about the timing inconsistency. It may also cause clocks to become
unreliable with some guest operating systems depending on they use the TSC.
9.17 Configuring the hard disk vendor product data
(VPD)
VirtualBox reports vendor product data for its virtual hard disks which consist of hard
disk serial number, firmware revision and model number. These can be changed using
the following commands:
VBoxManage setextradata "My VM"
"VBoxInternal/Devices/ahci/0/Config/Port0/SerialNumber"
"serial"
VBoxManage setextradata "My VM"
"VBoxInternal/Devices/ahci/0/Config/Port0/FirmwareRevision"
"firmware"
VBoxManage setextradata "My VM"
"VBoxInternal/Devices/ahci/0/Config/Port0/ModelNumber"
"model"
152
- Sun VirtualBox 1
- Contents 2
- 1.2 Some terminology 11
- 1.3 Features overview 12
- 1 First steps 17
- 1.8 Snapshots 25
- 2 Installation details 32
- 2.1.3 Uninstallation 33
- 2.1.4 Unattended installation 33
- 2.3 Installing on Linux hosts 34
- /etc/init.d/vboxdrv setup 36
- /opt/VirtualBox/ 37
- 2.4.3 Uninstallation 42
- 2.4.4 Unattended installation 42
- 3 Configuring virtual machines 44
- 3.2 64-bit guests 45
- 3.3 General settings 46
- 3.4 System settings 47
- 3.4.2 “Processor” tab 48
- 3.5 Display settings 51
- 3.6 Storage settings 51
- 3.7 Audio settings 54
- 3.8 Network settings 54
- 3.9 Serial ports 55
- 3.10 USB support 56
- VBoxManage list usbhost 57
- 3.11 Shared folders 58
- 4 Guest Additions 60
- 4.2 Versions 61
- 4.3 Windows Guest Additions 62
- 4.3.3 Unattended Installation 64
- 4.3.4 Manual file extraction 64
- 4.4 Linux Guest Additions 65
- /etc/init.d/vboxadd setup 66
- 4.5 Solaris Guest Additions 67
- 4.6 OS/2 Guest Additions 68
- 4.7 Folder sharing 68
- 4.8 Seamless windows 71
- 2.0 is now supported as well 72
- 4.11 Guest properties 73
- 5 Virtual storage 76
- VDI images with VMDK also 79
- 5.3 The Virtual Media Manager 80
- 5.4 Special image write modes 81
- 5.5 Differencing images 83
- 5.6 Cloning disk images 85
- 5.8 iSCSI servers 86
- 6 Virtual networking 88
- 6.3.2 PXE booting with NAT 91
- 6.3.3 NAT limitations 91
- 6.4 Bridged networking 92
- 6.5 Internal networking 93
- 6.6 Host-only networking 94
- 7.1 Introduction 96
- VBoxSDL --startvm <vm> 99
- 7.4.4 Remote USB 103
- 7.4.5 RDP authentication 104
- 7.4.6 RDP encryption 105
- 8 VBoxManage reference 106
- 8.1 VBoxManage list 111
- 8.2 VBoxManage showvminfo 112
- 8.4 VBoxManage createvm 113
- 8.5 VBoxManage modifyvm 114
- 8.5.2 Networking settings 116
- 8.6 VBoxManage import 118
- 8.7 VBoxManage expor t 120
- 8.8 VBoxManage startvm 120
- 8.9 VBoxManage controlvm 121
- 8.10 VBoxManage discardstate 122
- 8.11 VBoxManage snapshot 122
- 8.13.1 VBoxManage storagectl 124
- 8.14 VBoxManage showhdinfo 125
- 8.15 VBoxManage createhd 125
- 8.16 VBoxManage modifyhd 126
- 8.17 VBoxManage clonehd 127
- 8.19 VBoxManage addiscsidisk 128
- 8.21 VBoxManage setproperty 130
- 8.24 VBoxManage metrics 131
- 8.25 VBoxManage guestproperty 132
- 8.26 VBoxManage dhcpserver 133
- 9 Advanced topics 135
- Winlogon\GinaDLL 137
- VBoxSDL --startvm VMNAME 141
- 9.6 Custom VESA resolutions 142
- 9.10 Using serial ports 144
- 10 VirtualBox programming 154
- 11 Troubleshooting 155
- 11.2 Windows guests 157
- 11.3 Linux and X11 guests 159
- 11.4 Windows hosts 160
- 11.5 Linux hosts 162
- 11.5.6 VBoxSVC IPC issues 163
- 11.5.7 USB not working 164
- 11.6 Solaris hosts 165
- 12 Change log 167
- 13 Known limitations 237
- 14 Third-party licenses 240
- 14.2 Licenses 242
- 14.2.4 MIT License 261
- 14.2.6 zlib license 262
- 14.2.7 OpenSSL license 262
- 14.2.8 Slirp license 263
- 14.2.9 liblzf license 264
- 14.2.10 libpng license 264
- 14.2.11 lwIP license 265
- 14.2.12 libxml license 265
- 14.2.13 libxslt licenses 266
- 14.2.15 Chromium licenses 273
- 14.2.16 curl license 276
- 15 VirtualBox privacy policy 277
- Glossary 279
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