Copyright © Acronis, Inc., 2000-2009 121If your operating system and its loader reside on different volumes, always include both volumes in thebackup. The volumes must also be recovered together; otherwise there is a high risk that the operatingsystem will not start.2. [Optional] To create an exact copy of a disk or volume on a physical level, select the Back upsector-by-sector check box. The resulting backup will be equal in size to the disk being backed up(if the Compression level option is set to “None”). Use the sector-by-sector backup for backing updrives with unrecognized or unsupported file systems and other proprietary data formats.3. Click OK.What does a disk or volume backup store?For supported file systems, with the sector-by-sector option turned off, a disk or volume backupstores only those sectors that contain data. This reduces the resulting backup size and speeds up thebackup and recovery operations.WindowsThe swap file (pagefile.sys) and the file that keeps the RAM content when the machine goes intohibernation (hiberfil.sys) are not backed up. After recovery, the files will be re-created in theappropriate place with the zero size.A volume backup stores all other files and folders of the selected volume independent of theirattributes (including hidden and system files), the boot record, the file allocation table (FAT) if itexists, the root and the zero track of the hard disk with the master boot record (MBR). The bootcode of GPT volumes is not backed up.A disk backup stores all volumes of the selected disk (including hidden volumes such as thevendor's maintenance partitions) and the zero track with the master boot record.LinuxA volume backup stores all files and folders of the selected volume independent of theirattributes, a boot record and the file system super block.A disk backup stores all disk volumes as well as the zero track with the master boot record.6.2.4.2. Selecting files and foldersTo select files and/or folders for backing up1. Expand the local folders tree items in order to view its nested folders and files.2. Select an item by checking the corresponding check box in the tree. Selecting a check box for afolder means that all its content (files and folders) will be backed up. That is also the case for newfiles that will appear there in the future.A file-based backup is not sufficient for recovery of the operating system. In order to recover your operatingsystem, you have to perform a disk backup.Use the table in the right part of the window to browse and select the nested items. Selecting thecheck box beside the Name column’s header automatically selects all items in the table. Clearingthis check box automatically deselects all items.3. Click OK.
