![]() When booting an image, SystemRescueCd must be aware that its sysrcd.dat file is in an ISO and not directly on the partition. If you put a copy of systemrescuecd.iso on a partition that Grub2 can read then you can boot SystemRescueCd directly from the ISO image stored on your hard drive. isoloop=xxx: Grub2 will boot from an ISO image which is stored on the hard disk.Change the path by using backstore=/sysrcd/mybackstore.bs. The default location for a backing-stores file is any file named sysrcd.bs located at the root of a disk which is often a USB stick. If you want to save your backing-store file on a harddisk, boot with backstore=alldev to scan all devices (not just removable devices). To disable the disks scan at boot time specify backstore=off on the boot command line. A backing-store is not mandatory and if the scan fails, it will store the files which have changed in memory. By default, sysresccd automatically scan removable devices (eg: USB sticks) at boot time and uses the first backing-store it finds. A backing-store saves all the changes you can make, so that you keep these changes the next time you boot. backstore=xxx: SystemRescueCd comes with support for the backing-stores.All the actions that are supported by an initscript can be used. Use this option a multiple of times for different services. This does the same thing as /etc/init.d/samba start. For instance if you need the samba service to be started, you can boot with: initscript=samba:start. initscript=service:action: This option allows one to start/stop a service at boot time.Similarly specify a partition using its uuid: root=UUID=b3d3bec5-997a-413e-8449-0d0ec41ccba7. If the label of the partition where linux is installed is mylinux, then boot it using rescuecd root=LABEL=mylinux. So root=auto lets you start the system installed from the CD-ROM in case you have problem with your boot loader or kernel. ![]() The option root=auto will scan all the block devices for a linux system the first linux system found will be started. This option works with LVM volumes, e.g., rescuecd root=/dev/VolGroup00/LogVol00. Keep in mind that you must use a 64bit kernel if your system is made of 64bit programs. For example, if you have linux Gentoo installed on /dev/sda6, use rescuecd root=/dev/sda6 to start it. ![]()
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