Buenas, tengo un ordenador en el que se ha instalado Debian estable, que tiene dos kernels. El kernel 2.6.26-2-686 que es el propio de la instalacion, y luego un kernel instalado manualmente, con el que trasteo, kernel 2.6.30.
Bien, el caso es que el ordenador en cuestion se tiene que hacer (casi) todo remotamente, es complicado acceder fisicamente a el. Para mas detalles, comentaros que se trata de una red local de varios ordenadores. Bien, he mirado por internet como esta el tema, y encontre esto: http://www.tipete.com/userpost/tecnologia/avanzado-compilar-el-kernel-de-linux-remotamente . Para las pruebas, he elejido lo siguiente: - Kernel 2.6.26-2-686, arranca todo sin problemas. - Kernel 2.6.30, se ha eliminado el soporte de la placa base, para asegurarnos de que NO arranca. El archivo /boot/grub/menu.lst entero es el siguiente, y el problema es que no entiendo en que fallo. Se supone que tiene que arrancar con el kernel 2.6.30, encontrarse con el error de que no esta soportada la placa base, y automaticamente arrancar el kernel 2.6.26-2-686 # 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-legacy-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). default saved timeout 5 fallback 1 # 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/hda2 ro ## default grub root device ## e.g. groot=(hd0,0) # groot=(hd0,1) ## 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=quiet ## 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 ## should update-grub add savedefault to the default options ## can be true or false savedefault=true ## ## End Default Options ## title Debian GNU/Linux, kernel 2.6.30-1.19 root (hd0,1) kernel /boot/vmlinuz-2.6.30-1.19 root=/dev/hda2 ro quiet initrd /boot/initrd.img-2.6.30-1.19 savedefault title Debian GNU/Linux, kernel 2.6.30-1.19 (single-user mode) root (hd0,1) kernel /boot/vmlinuz-2.6.30-1.19 root=/dev/hda2 ro single initrd /boot/initrd.img-2.6.30-1.19 title Debian GNU/Linux, kernel 2.6.26-2-686 root (hd0,1) kernel /boot/vmlinuz-2.6.26-2-686 root=/dev/hda2 ro quiet initrd /boot/initrd.img-2.6.26-2-686 savedefault fallback title Debian GNU/Linux, kernel 2.6.26-2-686 (single-user mode) root (hd0,1) kernel /boot/vmlinuz-2.6.26-2-686 root=/dev/hda2 ro single initrd /boot/initrd.img-2.6.26-2-686 ### END DEBIAN AUTOMAGIC KERNELS LIST