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2009.03.15 syslinux / syslinux.cfg (1)

Linux2009. 3. 15. 21:31

syslinux / syslinux.cfg

The Syslinux Project covers lightweight bootloaders for

MS-DOS FAT filesystems (SYSLINUX),
network booting (PXELINUX),
bootable "El Torito" CD-ROMs (ISOLINUX), and
Linux ext2/ext3 filesystems (EXTLINUX).

The project also includes MEMDISK, a tool to boot legacy operating systems (such as DOS) from nontraditional media; it is usually used in conjunction with PXELINUX and ISOLINUX.

[출처 : http://syslinux.zytor.com/wiki/index.php/The_Syslinux_Project]
[공식 : http://syslinux.zytor.com/]

F:\syslinux\syslinux.cfg

default vesamenu.c32
timeout 100

menu background splash.jpg
menu title Welcome to F10-i686-Live!
menu color border 0 #ffffffff #00000000
menu color sel 7 #ffffffff #ff000000
menu color title 0 #ffffffff #00000000
menu color tabmsg 0 #ffffffff #00000000
menu color unsel 0 #ffffffff #00000000
menu color hotsel 0 #ff000000 #ffffffff
menu color hotkey 7 #ffffffff #ff000000
menu color timeout_msg 0 #ffffffff #00000000
menu color timeout 0 #ffffffff #00000000
menu color cmdline 0 #ffffffff #00000000
menu hidden
menu hiddenrow 5
label linux0
menu label Boot
kernel vmlinuz0
append initrd=initrd0.img root=UUID=00CB-3317 rootfstype=vfat rw liveimg overlay=UUID=00CB-3317 quiet rhgb
menu default
label check0
menu label Verify and Boot
kernel vmlinuz0
append initrd=initrd0.img root=UUID=00CB-3317 rootfstype=vfat rw liveimg overlay=UUID=00CB-3317 quiet rhgb check
label memtest
menu label Memory Test
kernel memtest
label local
menu label Boot from local drive
localboot 0xffff

APPEND options...

Add one or more options to the kernel command line. These are added both for automatic and manual boots. The options are added at the very beginning of the kernel command line, usually permitting explicitly entered kernel options to override them. This is the equivalent of the LILO "append" option.

APPEND -

Append nothing. APPEND with a single hyphen as argument in a LABEL section can be used to override a global APPEND.

이 외계어들은 머냐면, 문득 liveCD가 어떻게 작동되는지 궁금해서 뒤져보다가 발견한 것들이다.
일단 syslinux 라는 것을 기반으로 USB liveCD가 작동이 되는데, 그 syslinux의 환경설정파일은
syslinux.cfg 파일의 내용 중, persistent overlay를 설정한것과 안한 것의 차이는 저 append의 내용 차이뿐이었다.

 897        initrd=         [BOOT] Specify the location of the initial ramdisk

1882        root=           [KNL] Root filesystem

1889        rootfstype=     [KNL] Set root filesystem type

1904        rw              [KNL] Mount root device read-write on boot

[출처 : http://lxr.linux.no/linux/Documentation/kernel-parameters.txt]

rhgb = redhat graphical boot - This is a GUI mode booting screen with most of the information hidden while the user sees a rotating activity icon spining and brief information as to what the computer is doing.

quiet = hides the majority of boot messages before rhgb starts. These are supposed to make the common user more comfortable. They get alarmed about seeing the kernel and initializing messages, so they hide them for their comfort.

[출처 : http://www.redhat.com/archives/fedora-list/2004-May/msg07775.html]

찾아봐도 이정도 밖에 나오지 않는데, syslinux에서 제공하는건지 overlay에 대한 단서는 막막하다.
아무튼 root 와 overlay가 동일한 이름으로 되어 있는 것으로 봐서는, 어떠한 연관이 있어 보인다.

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Posted by 구차니

TAG APPEND, overlay, syslinux, syslinux.cfg

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