extlinux(1) [centos man page]
extlinux(1) General Commands Manual extlinux(1) NAME
extlinux - install the SYSLINUX bootloader on a ext2/ext3 filesystem SYNOPSIS
extlinux [options] directory DESCRIPTION
EXTLINUX is a new syslinux derivative, which boots from a Linux ext2/ext3 filesystem. It works the same way as SYSLINUX, with a few slight modifications. It is intended to simplify first-time installation of Linux, and for creation of rescue and other special-purpose boot disks. The installer is designed to be run on a mounted directory. For example, if you have an ext2 or ext3 usb key mounted on /mnt, you can run the following command: extlinux --install /mnt OPTIONS
-H, --heads=# Force the number of heads. -i, --install Install over the current bootsector. -O, --clear-once Clear the boot-once command. -o, --once=command Execute a command once upon boot. -M, --menu-save=label Set the label to select as default on the next boot -r, --raid Fall back to the next device on boot failure. --reset-adv Reset auxiliary data. -S, --sectors=# Force the number of sectors per track. -U, --update Updates a previous EXTLINUX installation. -z, --zip Force zipdrive geometry (-H 64 -S 32). FILES
The extlinux configuration file needs to be named extlinux.conf and needs to be stored in the extlinux installation directory. For more information about the contents of extlinux.conf, see syslinux(1) manpage, section files. BUGS
I would appreciate hearing of any problems you have with SYSLINUX. I would also like to hear from you if you have successfully used SYS- LINUX, especially if you are using it for a distribution. If you are reporting problems, please include all possible information about your system and your BIOS; the vast majority of all problems reported turn out to be BIOS or hardware bugs, and I need as much information as possible in order to diagnose the problems. There is a mailing list for discussion among SYSLINUX users and for announcements of new and test versions. To join, send a message to majordomo@linux.kernel.org with the line: SEE ALSO
syslinux(1) SYSLINUX for ext2/ext3 filesystem 18 December 2007 extlinux(1)
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MKRESCUE(8) System Manager's Manual MKRESCUE(8) NAME
mkrescue - make rescue floppy or CD SYNOPSIS
/sbin/mkrescue makes a bootable rescue floppy or CD using the default kernel specified in lilo.conf. DESCRIPTION
mkrescue takes its specifation for the kernel from the default image specified in /etc/lilo.conf. If the actual default is an other= spec- ification, then use the first image= specification. Any associated initial ramdisk (initrd=), and append= options will also be used. The root directory will be taken to be the current root. A bootable floppy or CD-image will be created using LILO version 22.5.5 or later. mkrescue normally requires no options, unless a CD-image is desired (--iso). OPTIONS
--append <string> Override any append= options taken from the default image. If there is any doubt about whether the lilo.conf options are correct, then specify no kernel parameters by providing the null string (--append ""). --debug Provide verbose output of the operation of mkrescue, pausing to allow the setting of internal operating parameters to be viewed. <CR> must be hit to proceed from these pauses. --device <device> Make the floppy on a device other than /dev/fd0. The floppy disk will always be made to boot on BIOS device code 0x00 (A: drive), without regard to the drive on which it is created. --fast Use a faster method of creating the boot floppy. This involves first creating a file of --size 1k blocks (default is 1440) mounted using a loopback device, creating the bootable floppy, then copying the entire file to the disk. --fs [ ext2 | msdos | minix ] Specify the type of filesystem to create on the drive. ext2 is the default, but msdos and minix allow slightly more disk sectors for really big kernels. --help Print a short usage synopsis, including a list of command options. --image <label> Specifies the label or alias of the particular image from which the append, initial ramdisk, root, keytable, and kernel information is to be taken. --initrd <filepath> and --kernel <filepath> These options, which must be used together, allow specification of an arbitrary kernel file and initial ramdisk file to be used on the created boot floppy. Be sure you know what you are doing before you use these options. If no inital ramdisk is needed with a particular kernel, then you MUST specify --initrd "", meaning a null pathname. --install [ text | menu ] Allows overriding the default human interface used with the rescue bootloader (configuration file "install=" option). text is the default on 1.2MB and 1.44MB floppy disks, and menu is the default on 2.88MB floppies and HD emulation on CD-R media. --iso Create an ISO-9660 bootable CD image (El Torito Format) suitable for burning to a CD-R or CD-RW. The --device specification defaults to the filename rescue.iso, and the --size defaults to 2880. A utility such as "wodim" may be used to burn the ISO file to a recordable CD medium. With this ISO option, the --size HD option is allowed. --nocompact For faster kernel loading from a floppy, LILO map compaction is normally enabled. This option will disable map compaction by omit- ting the lilo -c switch. --noformat Suppresses creation of a new filesystem on the boot floppy. This option may be used ONLY when you know that the floppy you will be writing upon is formatted with the same filesystem as specified by --fs XXX (default is ext2). --root <device> Specify the root filesystem for the kernel on the boot floppy. The currently mounted root is taken as the default specification. --size [ 1440 | 1200 | 2880 | HD ] The default floppy disk size is 1440, meaning a 1.44MB floppy. When --iso is specified, the default size is 2880. Allowed specifi- cations are 1200, 1440, or 2880, meaning a 1.2MB, 1.44MB or 2.88MB floppy, respectively. No other floppy disk sizes are supported. The HD specification, meaning "hard disk", may only be used with the --iso option, to indicate a 16MB hard disk is to be generated for emulation. This allows for very large kernel/initial ramdisk combinations on CD-R. The hard disk image is created using loop- back devices /dev/loop0 and /dev/loop1, which must be free to utilize this size option. --version Print the version number of mkrescue, then terminate. SEE ALSO
cdrecord(1), dd(1), wodim(1), lilo.conf(5), lilo(8), mkfs(8), mkinitrd(8), mkisofs(8), mount(8) 6 Mar 2011 MKRESCUE(8)