I just installed 12.04, clean, from a USB memory stick, to an Asus netbook. As sda is only 4GB, I made a 1GB partition on sdb for /var (along with a partition for swap and /home). I used the desktop i386 iso with unetbootin to load the memory stick. Everything seemed to have worked just fine, and the netbook had been running 11.10 just fine. However, after restarting, I get 3 "error: no such partition" errors from grub at the boot menu.
I've started the machine back up with the memory stick to look around. The latest grub is installed on /dev/sda
. (I thought maybe it hadn't "taken.") grub.cfg
looks right, and the blkid
s match the internal drives. (I thought maybe the memory stick fooled the grub installer, but it all looks good.) If I open a grub command prompt at the boot menu, and try to do an 'ls', I get more "error: no such partition" errors. I even get the message when I try 'help'.
I'm lost. Everything I know from 15 years of running Linux makes me think this thing should boot. I've never seen this kind of error before.
Boot Info Script 0.61 [1 April 2012]
============================= Boot Info Summary: ===============================
=> Grub2 (v1.99) is installed in the MBR of /dev/sda and looks at sector 1 of
the same hard drive for core.img. core.img is at this location and looks
for (,msdos1)/boot/grub on this drive.
=> Grub2 (v1.99) is installed in the MBR of /dev/sdb and looks at sector 1 of
the same hard drive for core.img. core.img is at this location and uses an
embedded config file:
---------------------------------------------------------------------------
search.fs_uuid 11adf701-62df-45bd-949b-493582d3e6e4 root
set prefix=($root)/boot/grub
---------------------------------------------------------------------------
-----.
=> Syslinux MBR (4.04 and higher) is installed in the MBR of /dev/sdc.
sda1: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 12.04 LTS
Boot files: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img
sdb1: __________________________________________________________________________
File system:
Boot sector type: -
Boot sector info:
Mounting failed: mount: unknown filesystem type ''
sdb2: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:
sdb3: __________________________________________________________________________
File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files:
sdc1: __________________________________________________________________________
File system: vfat
Boot sector type: SYSLINUX 4.05 20120131
Boot sector info: Syslinux looks at sector 535 of /dev/sdc1 for its
second stage. The integrity of Syslinux couldn't be
verified (install gawk). SYSLINUX is installed in the
directory. The 2 ADV sectors are not the same
(corrupt). No errors found in the Boot Parameter Block.
Operating System:
Boot files: /syslinux.cfg /ldlinux.sys
============================ Drive/Partition Info: =============================
Drive: sda _____________________________________________________________________
Disk /dev/sda: 4034 MB, 4034838528 bytes
109 heads, 2 sectors/track, 36149 cylinders, total 7880544 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sda1 * 2,048 7,878,655 7,876,608 83 Linux
Drive: sdb _____________________________________________________________________
Disk /dev/sdb: 16.1 GB, 16139354112 bytes
255 heads, 63 sectors/track, 1962 cylinders, total 31522176 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sdb1 * 2,048 3,999,743 3,997,696 82 Linux swap / Solaris
/dev/sdb2 3,999,744 5,953,535 1,953,792 83 Linux
/dev/sdb3 5,953,536 31,520,767 25,567,232 83 Linux
Drive: sdc _____________________________________________________________________
Disk /dev/sdc: 1059 MB, 1059323904 bytes
255 heads, 63 sectors/track, 128 cylinders, total 2068992 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
Partition Boot Start Sector End Sector # of Sectors Id System
/dev/sdc1 * 63 2,056,319 2,056,257 e W95 FAT16 (LBA)
"blkid" output: ________________________________________________________________
Device UUID TYPE LABEL
/dev/loop0 squashfs
/dev/sda1 11adf701-62df-45bd-949b-493582d3e6e4 ext4
/dev/sdb2 13102a87-bd10-48a1-9762-d52a025a7e87 ext4
/dev/sdb3 58611555-14fd-4f09-b397-667760592be6 ext4
/dev/sdc1 4EEA-35AF vfat SAS_SATA
================================ Mount points: =================================
Device Mount_Point Type Options
/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sdc1 /cdrom vfat (ro,noatime,fmask=0022,dmask=0022,codepage=cp437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
=========================== sda1/boot/grub/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 $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${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 "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 11adf701-62df-45bd-949b-493582d3e6e4
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=auto
load_video
insmod gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 11adf701-62df-45bd-949b-493582d3e6e4
set locale_dir=($root)/boot/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
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
if background_color 44,0,30; then
clear
fi
### 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 [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, with Linux 3.2.0-23-generic-pae' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
gfxmode $linux_gfx_mode
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 11adf701-62df-45bd-949b-493582d3e6e4
linux /boot/vmlinuz-3.2.0-23-generic-pae root=UUID=11adf701-62df-45bd-949b-493582d3e6e4 ro quiet splash $vt_handoff
initrd /boot/initrd.img-3.2.0-23-generic-pae
}
menuentry 'Ubuntu, with Linux 3.2.0-23-generic-pae (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod gzio
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 11adf701-62df-45bd-949b-493582d3e6e4
echo 'Loading Linux 3.2.0-23-generic-pae ...'
linux /boot/vmlinuz-3.2.0-23-generic-pae root=UUID=11adf701-62df-45bd-949b-493582d3e6e4 ro recovery nomodeset
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-3.2.0-23-generic-pae
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 11adf701-62df-45bd-949b-493582d3e6e4
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set=root 11adf701-62df-45bd-949b-493582d3e6e4
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
if [ "x${timeout}" != "x-1" ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep --interruptible 3 ; then
set timeout=0
fi
fi
fi
### END /etc/grub.d/30_os-prober ###
### 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 $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
--------------------------------------------------------------------------------
=============================== sda1/etc/fstab: ================================
--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
#
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda1 during installation
UUID=11adf701-62df-45bd-949b-493582d3e6e4 / ext4 errors=remount-ro 0 1
# /home was on /dev/sdb3 during installation
UUID=58611555-14fd-4f09-b397-667760592be6 /home ext4 defaults 0 2
# /var was on /dev/sdb2 during installation
UUID=13102a87-bd10-48a1-9762-d52a025a7e87 /var ext4 defaults 0 2
# swap was on /dev/sdb1 during installation
#UUID=75c2cadb-a0b9-4888-a034-c1379420f015 none swap sw 0 0
/dev/mapper/cryptswap1 none swap sw 0 0
--------------------------------------------------------------------------------
=================== sda1: Location of files loaded by Grub: ====================
GiB - GB File Fragment(s)
= boot/grub/core.img 1
= boot/grub/grub.cfg 1
= boot/initrd.img-3.2.0-23-generic-pae 1
= boot/vmlinuz-3.2.0-23-generic-pae 1
= initrd.img 1
= vmlinuz 1
============================== sdc1/syslinux.cfg: ==============================
--------------------------------------------------------------------------------
default menu.c32
prompt 0
menu title UNetbootin
timeout 100
label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
label ubnentry0
menu label ^Help
kernel /ubnkern
append initrd=/ubninit
label ubnentry1
menu label ^Try Ubuntu without installing
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
label ubnentry2
menu label ^Install Ubuntu
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash --
label ubnentry3
menu label ^Check disc for defects
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz boot=casper integrity-check quiet splash --
label ubnentry4
menu label Test ^memory
kernel /install/mt86plus
append initrd=/ubninit
label ubnentry5
menu label ^Boot from first hard disk
kernel /ubnkern
append initrd=/ubninit
--------------------------------------------------------------------------------
================= sdc1: Location of files loaded by Syslinux: ==================
GiB - GB File Fragment(s)
?? = ?? ldlinux.sys 2
?? = ?? menu.c32 1
?? = ?? syslinux.cfg 1
============== sdc1: Version of COM32(R) files used by Syslinux: ===============
menu.c32 : COM32R module (v4.xx)
========= Devices which don't seem to have a corresponding hard drive: =========
sdd
=============================== StdErr Messages: ===============================
xz: (stdin): Compressed data is corrupt
xz: (stdin): Compressed data is corrupt
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
awk: cmd. line:36: Math support is not compiled in
chroot
environment, and then did agrub-install --no-floppy --recheck /dev/sda
and I'm booting from the first hard drive.