[l-ubuntu-ve] error en el GRUB

Camilo Torres xtrmclmb en gmail.com
Sab Mar 21 21:37:23 GMT 2009


On Friday 20 March 2009 3:17:44 pm germana oliveira wrote:
> Saludos!!!
> 
> Tengo un disco externo con Debian instalado, al cual podia bootear desde 
> mi Ubuntu, con al ayuda de la F11 al arrancar la maquina y pedirle que 
> boteara desde el dispositivo USB (disco externo).... pero, algo habre 
> hecho que dañe el GRUB... ahora al pedirle que bootee desde el USB me 
> muestra el menu pero al seleccionar el Debian me da un error.
> 
> Aqui algunos datos:
> 
> -------------------------------------------------- FDISK -L
> 
> Disco /dev/sda: 122.9 GB, 122942324736 bytes
> 255 cabezas, 63 sectores/pista, 14946 cilindros
> Unidades = cilindros de 16065 * 512 = 8225280 bytes
> Identificador de disco: 0x000f083a
> 
> Disposit. Inicio    Comienzo      Fin      Bloques  Id  Sistema
> /dev/sda1   *           1       14569   117025461   83  Linux
> /dev/sda2           14570       14946     3028252+   5  Extendida
> /dev/sda5           14570       14946     3028221   82  Linux swap / Solaris
> 
> Disco /dev/sdb: 80.0 GB, 80026361856 bytes            
> ------------------> ESTE ES UN DISCO DE DATOS
> 255 cabezas, 63 sectores/pista, 9729 cilindros
> Unidades = cilindros de 16065 * 512 = 8225280 bytes
> Identificador de disco: 0x9e6b9e6b
> 
> Disposit. Inicio    Comienzo      Fin      Bloques  Id  Sistema
> /dev/sdb1               1        9729    78148161   83  Linux
> 
> *Disco /dev/sdc: 60.0 GB, 60022480896 bytes              
> ----------------->DISCO CON DEBIAN
> 255 cabezas, 63 sectores/pista, 7297 cilindros
> Unidades = cilindros de 16065 * 512 = 8225280 bytes
> Identificador de disco: 0x000becfa
> 
> Disposit. Inicio    Comienzo      Fin      Bloques  Id  Sistema
> /dev/sdc1               1        7173    57617091   83  Linux
> /dev/sdc2            7174        7297      996030    5  Extendida
> /dev/sdc5            7174        7297      995998+  82  Linux swap / Solaris
> 
> 
> *----------------------------------------------------------- MENU.LST, 
> del disco con debian
> 
> # menu.lst - See: grub(8), info grub, update-grub(8)
> #            grub-install(8), grub-floppy(8),
> #            grub-md5-crypt, /usr/share/doc/grub
> #            and /usr/share/doc/grub-doc/.
> 
> ## default num
> # Set the default entry to the entry number NUM. Numbering starts from 
> 0, and
> # the entry number 0 is the default if the command is not used.
> #
> # You can specify 'saved' instead of a number. In this case, the default 
> entry
> # is the entry saved with the command 'savedefault'.
> # WARNING: If you are using dmraid do not change this entry to 'saved' 
> or your
> # array will desync and will not let you boot your system.
> default         0
> 
> ## timeout sec
> # Set a timeout, in SEC seconds, before automatically booting the 
> default entry
> # (normally the first entry defined).
> timeout         5
> 
> # Pretty colours
> color cyan/blue white/blue
> 
> ## password ['--md5'] passwd
> # If used in the first section of a menu file, disable all interactive 
> editing
> # control (menu entry editor and command-line)  and entries protected by the
> # command 'lock'
> # e.g. password topsecret
> #      password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
> # password topsecret
> #
> # examples
> #
> # title         Windows 95/98/NT/2000
> # root          (hd0,0)
> # makeactive
> # chainloader   +1
> #
> # title         Linux
> # root          (hd0,1)
> # kernel        /vmlinuz root=/dev/hda2 ro
> #
> 
> #
> # Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
> 
> ### BEGIN AUTOMAGIC KERNELS LIST
> ## lines between the AUTOMAGIC KERNELS LIST markers will be modified
> ## by the debian update-grub script except for the default options below
> 
> ## DO NOT UNCOMMENT THEM, Just edit them to your needs
> 
> ## ## Start Default Options ##
> ## default kernel options
> ## default kernel options for automagic boot options
> ## If you want special options for specific kernels use kopt_x_y_z
> ## where x.y.z is kernel version. Minor versions can be omitted.
> ## e.g. kopt=root=/dev/hda1 ro
> ##      kopt_2_6_8=root=/dev/hdc1 ro
> ##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
> # kopt=root=/dev/sdb1 ro
> 
> ## default grub root device
> ## e.g. groot=(hd0,0)
> # groot=(hd2,0)
> 
> ## should update-grub create alternative automagic boot options
> ## e.g. alternative=true
> ##      alternative=false
> # alternative=true
> 
> ## should update-grub lock alternative automagic boot options
> ## e.g. lockalternative=true
> ##      lockalternative=false
> # lockalternative=false
> 
> ## additional options to use with the default boot option, but not with the
> ## alternatives
> ## e.g. defoptions=vga=791 resume=/dev/hda5
> # defoptions=
> 
> ## should update-grub lock old automagic boot options
> ## e.g. lockold=false
> ##      lockold=true
> # lockold=false
> 
> ## Xen hypervisor options to use with the default Xen boot option
> # xenhopt=
> 
> ## Xen Linux kernel options to use with the default Xen boot option
> # xenkopt=console=tty0
> 
> ## altoption boot targets option
> ## multiple altoptions lines are allowed
> ## e.g. altoptions=(extra menu suffix) extra boot options
> ##      altoptions=(single-user) single
> # altoptions=(single-user mode) single
> 
> ## controls how many kernels should be put into the menu.lst
> ## only counts the first occurence of a kernel, not the
> ## alternative kernel options
> ## e.g. howmany=all
> ##      howmany=7
> # howmany=all
> 
> ## should update-grub create memtest86 boot option
> ## e.g. memtest86=true
> ##      memtest86=false
> # memtest86=true
> 
> ## should update-grub adjust the value of the default booted system
> ## can be true or false
> # updatedefaultentry=false
> 
> ## ## End Default Options ##
> 
> title           Debian GNU/Linux, kernel 2.6.18-6-k7
> root            (hd0,0)
> kernel          /boot/vmlinuz-2.6.18-6-k7 root=/dev/sdb1 ro
> initrd          /boot/initrd.img-2.6.18-6-k7
> savedefault
> 
> title           Debian GNU/Linux, kernel 2.6.18-6-k7 (single-user mode)
> root            (hd0,0)
> kernel          /boot/vmlinuz-2.6.18-6-k7 root=/dev/sdb1 ro single
> initrd          /boot/initrd.img-2.6.18-6-k7
> savedefault
> 
> ### END DEBIAN AUTOMAGIC KERNELS LIST
> 
> # This is a divider, added to separate the menu items below from the Debian
> # ones.
> title           Other operating systems:
> root
> 
> 
> # This entry automatically added by the Debian installer for an existing
> # linux installation on /dev/hda1.
> title           Ubuntu 8.04.1, kernel 2.6.24-22-generic (on /dev/hda1)
> root            (hd1,0)
> kernel          /boot/vmlinuz-2.6.24-22-generic 
> root=UUID=ebafbd50-c1e3-46b1-be76-cac5d4adb915 ro quiet splash
> initrd          /boot/initrd.img-2.6.24-22-generic
> savedefault
> boot
> 
> # This entry automatically added by the Debian installer for an existing
> # linux installation on /dev/hda1.
> title           Ubuntu 8.04.1, kernel 2.6.24-22-generic (recovery mode) 
> (on /dev/hda1)
> root            (hd1,0)
> kernel          /boot/vmlinuz-2.6.24-22-generic 
> root=UUID=ebafbd50-c1e3-46b1-be76-cac5d4adb915 ro single
> initrd          /boot/initrd.img-2.6.24-22-generic
> savedefault
> boot
> 
> 
> # This entry automatically added by the Debian installer for an existing
> # linux installation on /dev/hda1.
> title           Ubuntu 8.04.1, kernel 2.6.24-16-generic (on /dev/hda1)
> root            (hd1,0)
> kernel          /boot/vmlinuz-2.6.24-16-generic 
> root=UUID=ebafbd50-c1e3-46b1-be76-cac5d4adb915 ro quiet splash
> initrd          /boot/initrd.img-2.6.24-16-generic
> savedefault
> boot
> 
> 
> # This entry automatically added by the Debian installer for an existing
> # linux installation on /dev/hda1.
> title           Ubuntu 8.04.1, kernel 2.6.24-16-generic (recovery mode) 
> (on /dev/hda1)
> root            (hd1,0)
> kernel          /boot/vmlinuz-2.6.24-16-generic 
> root=UUID=ebafbd50-c1e3-46b1-be76-cac5d4adb915 ro single
> initrd          /boot/initrd.img-2.6.24-16-generic
> savedefault
> boot
> 
> 
> # This entry automatically added by the Debian installer for an existing
> # linux installation on /dev/hda1.
> title           Ubuntu 8.04.1, memtest86+ (on /dev/hda1)
> root            (hd1,0)
> kernel          /boot/memtest86+.bin
> savedefault
> boot
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------
> 
> Lo ultimo que hice fue intentar inatalar GRUB en el disco con debian con 
> un CD Live
> 
> sudo --bind /dev /media/disk/dev
> sudo chroot
> grub-install /dev/sdc
> 
> 
> GRACIAS!!
> 

¿Cuál es el error que te da?

En tu menu.lst veo que no veo que le pases el disco correcto al kernel, dice:
kernel          /boot/vmlinuz-2.6.18-6-k7 root=/dev/sdb1 ro
pero debería ser así (no estoy del todo seguro):
kernel          /boot/vmlinuz-2.6.18-6-k7 root=/dev/sdc1 ro

mira que pongo /dev/sdc1 mientras que tu tienes /dev/sdb1; el que tu tienes corresponde a la partición del disco de datos, no a la del disco del sistema que es el externo.

Creo que debería quedar algo como:
title           Debian GNU/Linux, kernel 2.6.18-6-k7
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.18-6-k7 root=/dev/sdbc1 ro
initrd          /boot/initrd.img-2.6.18-6-k7
savedefault

-- 
Camilo Torres
Debian GNU/Linux + KDE



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