Changeset 55181 in vbox
- Timestamp:
- Apr 10, 2015 12:44:29 PM (9 years ago)
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- 1 edited
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trunk/doc/manual/en_US/user_Storage.xml (modified) (2 diffs)
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trunk/doc/manual/en_US/user_Storage.xml
r55153 r55181 42 42 transfers. VirtualBox can emulate the five most common types of hard disk 43 43 controllers typically found in today's PCs: IDE, SATA (AHCI), SCSI, 44 SAS and USB based mass storage devices.<footnote>44 SAS and USB-based mass storage devices.<footnote> 45 45 <para>SATA support was added with VirtualBox 1.6; experimental SCSI 46 46 support was added with 2.1 and fully implemented with 2.2. Generally, … … 194 194 <listitem> 195 195 <para>The <emphasis role="bold">USB mass storage device class</emphasis> 196 is a standard to connect external storage devices like hard or flash197 drives to a host through USB. All major operating systems support 198 these devices for a long time and ship with a generic driver which199 makes third party drivers unnecessary.200 The virtual USB storage controller offered by VirtualBox works201 different than the other storage controller types. Unlike the202 controllers which appear as a single PCI device to the guest with203 multiple disks attached to it, the USB based storage controller does204 not appear directly in the guest. Each disk attached to the controller205 a ppears as a different USB device to the guest.</para>206 196 is a standard to connect external storage devices like hard disksor flash 197 drives to a host through USB. All major operating systems support these 198 devices for a long time and ship generic drivers making third-party 199 drivers superfluous. In particular legacy operating systems without 200 support for SATA controllers may benefit from USB mass storage devices.</para> 201 <para>The virtual USB storage controller offered by VirtualBox works 202 different than the other storage controller types: When storage 203 controllers appear as a single PCI device to the guest with multiple 204 disks attached to it, the USB-based storage controller does not appear 205 as virtual storage controller. Each disk attached to the controller 206 appears as a dedicated USB device to the guest.</para> 207 207 <warning> 208 <para> As of version 5.0 VirtualBox does not support booting from209 drives attached via USB.</para>208 <para>Booting from drives attached via USB is not supported as the 209 BIOS lacks USB support.</para> 210 210 </warning> 211 211 </listitem>
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