Same problem here.
It seems to be caused by linux-boot-prober:
# linux-boot-prober /dev/sdb1
/dev/sdb1:/dev/sdb1:Linux Mint 14 MATE 32-bit, 3.4.34-030434-i7
(/dev/sda3):/boot/vmlinuz-3.4.34-030434-i7:/boot/initrd.img-3.4.34-030434-i7:root=UUID=ce078971-fdfb-4b0f-aaa8-728dc9b2f83b
ro crashkernel=384M-2G:64M,2G-:128M quiet splash $vt_handoff
while blkid shows:
# blkid
/dev/sda3: UUID="ce078971-fdfb-4b0f-aaa8-728dc9b2f83b" TYPE="ext4"
/dev/sdb1: UUID="a1849561-5dae-4680-b989-8651e05fe1eb" TYPE="ext4"
i.e it puts wrong "root=".
The code below works it around, insert at approriate place in
/etc/grub.d/30_os_prober:
linux)
LINUXPROBED="`linux-boot-prober ${DEVICE} 2> /dev/null | tr ' ' '^' |
paste -s -d ' '`"
prepare_boot_cache=
boot_device_id=
is_first_entry=true
title_correction_code=
OS="${LONGNAME}"
for LINUX in ${LINUXPROBED} ; do
LROOT="`echo ${LINUX} | cut -d ':' -f 1`"
LBOOT="`echo ${LINUX} | cut -d ':' -f 2`"
LLABEL="`echo ${LINUX} | cut -d ':' -f 3 | tr '^' ' '`"
LKERNEL="`echo ${LINUX} | cut -d ':' -f 4`"
LINITRD="`echo ${LINUX} | cut -d ':' -f 5`"
LPARAMS="`echo ${LINUX} | cut -d ':' -f 6- | tr '^' ' ' | sed -e
's/root=[^ ]*//;'`"
if [ -z "${LLABEL}" ] ; then
LLABEL="${LONGNAME}"
fi
if [ "${LROOT}" != "${LBOOT}" ]; then
LKERNEL="${LKERNEL#/boot}"
LINITRD="${LINITRD#/boot}"
fi
if [ -z "${prepare_boot_cache}" ]; then
prepare_boot_cache="$(prepare_grub_to_access_device ${LBOOT} | sed -e
"s/^/\t/")"
[ "${prepare_boot_cache}" ] || continue
fi
found_other_os=1
onstr="$(gettext_printf "(on %s)" "${DEVICE}")"
if [ -z "$boot_device_id" ]; then
boot_device_id="$(grub_get_device_id "${DEVICE}")"
fi
LPARAMS="root=$boot_device_id ${LPARAMS}"
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https://bugs.launchpad.net/bugs/658140
Title:
Isadora install to /dev/sdb1 gives wrong grub setup
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