2 Disk image files (VDI, VMDK, VHD, HDD) . . . . . . . . . . . . . . . . . . . . . 81 5.3 The Virtual Media Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 5.4 Special image write modes degree, VirtualBox is functionally identical on all of the host platforms, and the same file and image formats are used. This allows you to run virtual machines created on one host on another host with (see chapter 5, Virtual storage, page 79 for details), but the most common way is to use a large image file on your “real” hard disk, whose contents VirtualBox presents to your VM as if it were a complete

2 Disk image files (VDI, VMDK, VHD, HDD) . . . . . . . . . . . . . . . . . . . . . 86 5.3 The Virtual Media Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 5.4 Special image write modes degree, VirtualBox is functionally identical on all of the host platforms, and the same file and image formats are used. This allows you to run virtual machines created on one host on another host with Experimental support for PCI passthrough on Linux hosts; see chapter 9.6, PCI passthrough, page 202. g) Disk image encryption with AES algorithm; see chapter 9.31, Encryption of disk im- ages, page 234. VirtualBox

2 Disk image files (VDI, VMDK, VHD, HDD) . . . . . . . . . . . . . . . . . . . . . 78 5.3 The Virtual Media Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 5.4 Special image write modes degree, VirtualBox is functionally identical on all of the host platforms, and the same file and image formats are used. This allows you to run virtual machines created on one host on another host with (see chapter 5, Virtual storage, page 76 for details), but the most common way is to use a large image file on your “real” hard disk, whose contents VirtualBox presents to your VM as if it were a complete

2 Disk image files (VDI, VMDK, VHD, HDD) . . . . . . . . . . . . . . . . . . . . . 86 5.3 The Virtual Media Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 5.4 Special image write modes degree, VirtualBox is functionally identical on all of the host platforms, and the same file and image formats are used. This allows you to run virtual machines created on one host on another host with Experimental support for PCI passthrough on Linux hosts; see chapter 9.6, PCI passthrough, page 201. g) Disk image encryption with AES algorithm; see chapter 9.31, Encryption of disk im- ages, page 233. VirtualBox

1 Hard disk controllers: IDE, SATA (AHCI), SCSI, SAS . . . . . . . . . . . . . . . . 80 5.2 Disk image files (VDI, VMDK, VHD, HDD) . . . . . . . . . . . . . . . . . . . . . 82 5.3 The Virtual Media Manager Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 3 Contents 5.4 Special image write modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 5.5 Differencing images . . degree, VirtualBox is functionally identical on all of the host platforms, and the same file and image formats are used. This allows you to run virtual machines created on one host on another host with

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 373CONTENTS vi 29.7 System and Package Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . 374 29.8 Debugging and profiling . Union Optimizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1576 101.13 System Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1577 101.14 Package Images the local machine, which does not need to be – or even should not be – captured in the compiled image. It will be called after the module is loaded into a process, including if it is being loaded intoCHAPTER

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 373CONTENTS vi 29.7 System and Package Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . 374 29.8 Debugging and profiling . Union Optimizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1576 101.13 System Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1577 101.14 Package Images the local machine, which does not need to be – or even should not be – captured in the compiled image. It will be called after the module is loaded into a process, including if it is being loaded intoCHAPTER

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396 30.7 System and Package Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . 397 30.8 Debugging and profiling . Union Optimizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1859 105.13 System Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1860 105.14 Package Images the local machine, which does not need to be – or even should not be – captured in the compiled image. It will be called after the module is loaded into a process, including if it is being loaded into

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396 30.7 System and Package Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . 397 30.8 Debugging and profiling . Union Optimizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1859 105.13 System Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1860 105.14 Package Images the local machine, which does not need to be – or even should not be – captured in the compiled image. It will be called after the module is loaded into a process, including if it is being loaded into

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396 30.7 System and Package Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . 397 30.8 Debugging and profiling . Union Optimizations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1859 105.13 System Image Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1860 105.14 Package Images the local machine, which does not need to be – or even should not be – captured in the compiled image. It will be called after the module is loaded into a process, including if it is being loaded into