![]() ![]() For example to create a 4 GiB image in the raw format: QEMU provides the qemu-img command to create hard disk images. However, using this format instead of raw will likely affect performance. This image format also supports QEMU snapshotting functionality (see #Creating and managing snapshots via the monitor console for details). The image appears as the full size to the guest operating system, even though it may take up only a very small amount of space on the host system. This method provides the least I/O overhead, but can waste a lot of space, as not-used space on the guest cannot be used on the host.Īlternatively, the hard disk image can be in a format such as qcow2 which only allocates space to the image file when the guest operating system actually writes to those sectors on its virtual hard disk. A hard disk image is a file which stores the contents of the emulated hard disk.Ī hard disk image can be raw, so that it is literally byte-by-byte the same as what the guest sees, and will always use the full capacity of the guest hard drive on the host. To run QEMU you will need a hard disk image, unless you are booting a live system from CD-ROM or the network (and not doing so to install an operating system to a hard disk image). Tip: See Wikibooks:QEMU/Images for more information on QEMU images. The installed QEMU commands are named qemu- target_architecture-static, for example, qemu-x86_64-static for intel 64-bit CPUs.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |