Está corrigido. Eu apenas reinstalei o Grub do chroot com o comando "grub-install / dev / sda" seguido por "grub-update".
Eu recentemente atualizei do Ubuntu 14.04 para o 16.04. Estou alugando um servidor dedicado e não consigo acessar o GRUB na inicialização. Então não consigo inicializar (sem resposta de ping) e não sei por quê. Meu host me permite inicializar com uma imagem de CD ao vivo (ubuntu 12.04) para recuperar meu servidor, depois montei minhas partições e iniciei uma sessão chroot. Eu tentei instalar a última imagem do linux (4.4.0-47) e a instalação funcionou como um encanto. Eu fiz o comando update-grub.
Aqui está o /boot/grub/menu.list
Eu também tentei instalar outra versão do kernel como você pode ver (4.4.0-34).
root@62-210-243-90:/boot/grub# cat menu.lst # 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 use 'savedefault' 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 3 ## hiddenmenu # Hides the menu by default (press ESC to see the menu) hiddenmenu # 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=UUID=aa0c854e-b229-4e57-bab8-c9f9c76e0c03 ro ## default grub root device ## e.g. groot=(hd0,0) # groot=cb3a6d4b-ad2c-48f3-8604-2bf4e511e6c4 ## 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 splash ## 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=(recovery) single # altoptions=(recovery 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 ## specify if running in Xen domU or have grub detect automatically ## update-grub will ignore non-xen kernels when running in domU and vice versa ## e.g. indomU=detect ## indomU=true ## indomU=false # indomU=detect ## 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=false ## ## End Default Options ## title Ubuntu 16.04.1 LTS, kernel 4.4.0-47-generic uuid cb3a6d4b-ad2c-48f3-8604-2bf4e511e6c4 kernel /vmlinuz-4.4.0-47-generic root=UUID=aa0c854e-b229-4e57-bab8-c9f9 c76e0c03 ro quiet splash initrd /initrd.img-4.4.0-47-generic title Ubuntu 16.04.1 LTS, kernel 4.4.0-47-generic (recovery mode) uuid cb3a6d4b-ad2c-48f3-8604-2bf4e511e6c4 kernel /vmlinuz-4.4.0-47-generic root=UUID=aa0c854e-b229-4e57-bab8-c9f9 c76e0c03 ro single initrd /initrd.img-4.4.0-47-generic title Ubuntu 16.04.1 LTS, kernel 4.4.0-34-generic uuid cb3a6d4b-ad2c-48f3-8604-2bf4e511e6c4 kernel /vmlinuz-4.4.0-34-generic root=UUID=aa0c854e-b229-4e57-bab8-c9f9 c76e0c03 ro quiet splash initrd /initrd.img-4.4.0-34-generic title Ubuntu 16.04.1 LTS, kernel 4.4.0-34-generic (recovery mode) uuid cb3a6d4b-ad2c-48f3-8604-2bf4e511e6c4 kernel /vmlinuz-4.4.0-34-generic root=UUID=aa0c854e-b229-4e57-bab8-c9f9 c76e0c03 ro single initrd /initrd.img-4.4.0-34-generic ### END DEBIAN AUTOMAGIC KERNELS LIST
Aqui está o / etc / default / grub
# If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR='lsb_release -i -s 2> /dev/null || echo Debian' GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="console=ttyS1,9600 BOOTIF=01-e8-9a-8f-22-d9-61" # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command 'vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1"
Aqui está o /boot/grub/grub.cfg
root@62-210-243-90:/boot/grub# cat grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
if [ "${next_entry}" ] ; then
set default="${next_entry}"
set next_entry=
save_env next_entry
set boot_once=true
else
set default="0"
fi
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
if [ x$feature_default_font_path = xy ] ; then
font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos2'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2 aa0c854e-b229-4e57-bab8-c9f9c76e0c03
else
search --no-floppy --fs-uuid --set=root aa0c854e-b229-4e57-bab8-c9f9c76e0c03
fi
font="/usr/share/grub/unicode.pf2"
fi
if loadfont $font ; then
set gfxmode=auto
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=fr_FR
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
set timeout=30
else
if [ x$feature_timeout_style = xy ] ; then
set timeout_style=hidden
set timeout=0
# Fallback hidden-timeout code in case the timeout_style feature is
# unavailable.
elif sleep --interruptible 0 ; then
set timeout=0
fi
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
set gfxpayload="${1}"
if [ "${1}" = "keep" ]; then
set vt_handoff=vt.handoff=7
else
set vt_handoff=
fi
}
if [ "${recordfail}" != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_os-prober ###
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
Aqui está a saída de "update-grub"
root@62-210-243-90:/# update-grub Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... found: /boot/grub/default Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst Searching for splash image ... none found, skipping ... Found kernel: /vmlinuz-4.4.0-47-generic Found kernel: /vmlinuz-4.4.0-34-generic Replacing config file /run/grub/menu.lst with new version Found kernel: /vmlinuz-4.4.0-47-generic Found kernel: /vmlinuz-4.4.0-34-generic Updating /boot/grub/menu.lst ... done
Perguntado por um usuário: saída de "dpkg -l | grep grub"
root@62-210-243-90:/boot/grub# dpkg -l | grep grub ii grub 0.97-29ubuntu68 amd64 GRand Unified Bootloader (Legacy version) ii grub-common 2.02~beta2-36ubuntu3.2 amd64 GRand Unified Bootloader (common files) rc grub-pc 2.02~beta2-36ubuntu3.2 amd64 GRand Unified Bootloader, version 2 (PC/BIOS version)
Saída do grub --version
root@62-210-243-90:/boot/grub# grub --version grub (GNU GRUB 0.97)
Outra informação: parece que não há registros de notícias escritos quando eu inicio o Ubuntu16.04 (como o Syslog ou o dmesg). Eu sei disso porque eu fiz o comando "ls -t -lh" em / var / log para classificar arquivos por tempo. Meu último dsmeg é antes da atualização.
Você pode me ajudar a resolver esse problema de inicialização? Obrigado pela ajuda. Peça-me informações
Está corrigido. Eu apenas reinstalei o Grub do chroot com o comando "grub-install / dev / sda" seguido por "grub-update".