qdo eu fiz a UNDER eu peguei o install do slack e modifiquei, agora eu tava pensando aki sobre esse bug e lembrei de um outro bug que a UNDER teve justamente por causa desse script, se ele não conseguir acessar alguma partição do teu disco ele para ali e não faz mais nada....
essa aki eh a parte responsável por isso:

Código :
TMP=/var/log/setup/tmp
rm -f $TMP/SeTfdisk
 
# listide major minor hd1 hd2 (2 base devs for major)
list_ide() {
  if [ "$2" = "0" ]; then
    fdisk -l /dev/$3 >> $TMP/SeTfdisk
  elif [ "$2" = "64" ]; then
    fdisk -l /dev/$4 >> $TMP/SeTfdisk
  fi
}
 
list_scsi() {
  # find drive # 0 - 15
  DRV=`expr $1 / 16`
  NUM=`expr $1 % 16`
  if [ ! "$NUM" = "0" ]; then
    return
  fi
  if [ "$DRV" = "0" ]; then
    fdisk -l /dev/sda >> $TMP/SeTfdisk
  elif [ "$DRV" = "1" ]; then
    fdisk -l /dev/sdb >> $TMP/SeTfdisk
  elif [ "$DRV" = "2" ]; then
    fdisk -l /dev/sdc >> $TMP/SeTfdisk
  elif [ "$DRV" = "3" ]; then
    fdisk -l /dev/sdd >> $TMP/SeTfdisk
  elif [ "$DRV" = "4" ]; then
    fdisk -l /dev/sde >> $TMP/SeTfdisk
  elif [ "$DRV" = "5" ]; then
    fdisk -l /dev/sdf >> $TMP/SeTfdisk
  elif [ "$DRV" = "6" ]; then
    fdisk -l /dev/sdg >> $TMP/SeTfdisk
  elif [ "$DRV" = "7" ]; then
    fdisk -l /dev/sdh >> $TMP/SeTfdisk
  elif [ "$DRV" = "8" ]; then
    fdisk -l /dev/sdi >> $TMP/SeTfdisk
  elif [ "$DRV" = "9" ]; then
    fdisk -l /dev/sdj >> $TMP/SeTfdisk
  elif [ "$DRV" = "10" ]; then
    fdisk -l /dev/sdk >> $TMP/SeTfdisk
  elif [ "$DRV" = "11" ]; then
    fdisk -l /dev/sdl >> $TMP/SeTfdisk
  elif [ "$DRV" = "12" ]; then
    fdisk -l /dev/sdm >> $TMP/SeTfdisk
  elif [ "$DRV" = "13" ]; then
    fdisk -l /dev/sdn >> $TMP/SeTfdisk
  elif [ "$DRV" = "14" ]; then
    fdisk -l /dev/sdo >> $TMP/SeTfdisk
  elif [ "$DRV" = "15" ]; then
    fdisk -l /dev/sdp >> $TMP/SeTfdisk
  fi
}
 
/boot# List Mylex RAID device
list_rd() {
  # find drive
  DRV=`expr $2 / 8`
  NUM=`expr $2 % 8`
  if [ ! "$NUM" = "0" ]; then
    return
  fi
  fdisk -l /dev/rd/c$1d$DRV >> $TMP/SeTfdisk
}
 
# List Cpq SMART/2 RAID device
list_ida() {
  # find drive
  DRV=`expr $2 / 16`
  NUM=`expr $2 % 16`
  if [ ! "$NUM" = "0" ]; then
    return
  fi
  fdisk -l /dev/ida/c$1d$DRV >> $TMP/SeTfdisk
}
 
list_cciss() {
  # find drive
  DRV=`expr $2 / 16`
  NUM=`expr $2 % 16`
  if [ ! "$NUM" = "0" ]; then
    return
  fi
  fdisk -l /dev/cciss/c$1d$DRV >> $TMP/SeTfdisk
}
 
list_ataraid() {
  # find drive
  DRV=`expr $2 / 16`
  NUM=`expr $2 % 16`
  if [ "$NUM" = "0" ]; then
     fdisk -l /dev/ataraid/d$DRV >> $TMP/SeTfdisk
  else
     return
  fi
}
 
list_amiraid() {
  # find drive
  DRV=`expr $2 / 16`
  NUM=`expr $2 % 16`
  if [ "$NUM" = "0" ]; then
     fdisk -l /dev/amiraid/ar$DRV >> $TMP/SeTfdisk
  else
     return
  fi
}
 
list_md() {
  echo "/dev/$2  1 2 $1 kk Linux" >> $TMP/SeTfdisk
}
 
/bootif cat /proc/partitions | grep / 1> /dev/null 2> /dev/null ; then # new
  cat /proc/partitions | grep / | while read line ; do
    SMASHED_LINE=$line
    MAJOR=`echo $SMASHED_LINE | cut -f 1 -d ' '`
    MINOR=`echo $SMASHED_LINE | cut -f 2 -d ' '`
    if [ "$MAJOR" = "3" ]; then
      list_ide $MAJOR $MINOR hda hdb
    elif [ "$MAJOR" = "8" ]; then
      list_scsi $MINOR
    elif [ "$MAJOR" = "9" ]; then
      list_md `echo $SMASHED_LINE | cut -f 3 -d ' ' | tr -d '/'` \
              `echo $SMASHED_LINE | cut -f 4 -d ' '`
    elif [ "$MAJOR" = "22" ]; then
      list_ide $MAJOR $MINOR hdc hdd
    elif [ "$MAJOR" = "33" ]; then
      list_ide $MAJOR $MINOR hde hdf
    elif [ "$MAJOR" = "34" ]; then
      list_ide $MAJOR $MINOR hdg hdh
    elif [ "$MAJOR" = "48" ]; then
      list_rd 0 $MINOR
    elif [ "$MAJOR" = "49" ]; then
      list_rd 1 $MINOR
    elif [ "$MAJOR" = "50" ]; then
      list_rd 2 $MINOR
    elif [ "$MAJOR" = "51" ]; then
      list_rd 3 $MINOR
    elif [ "$MAJOR" = "52" ]; then
      list_rd 4 $MINOR
    elif [ "$MAJOR" = "53" ]; then
      list_rd 5 $MINOR
    elif [ "$MAJOR" = "54" ]; then
      list_rd 6 $MINOR
    elif [ "$MAJOR" = "55" ]; then
      list_rd 7 $MINOR
    elif [ "$MAJOR" = "56" ]; then
      list_ide $MAJOR $MINOR hdi hdj
    elif [ "$MAJOR" = "57" ]; then
      list_ide $MAJOR $MINOR hdk hdl
    elif [ "$MAJOR" = "72" ]; then
      list_ida 0 $MINOR
    elif [ "$MAJOR" = "73" ]; then
      list_ida 1 $MINOR
    elif [ "$MAJOR" = "74" ]; then
      list_ida 2 $MINOR
    elif [ "$MAJOR" = "75" ]; then
      list_ida 3 $MINOR
    elif [ "$MAJOR" = "76" ]; then
      list_ida 4 $MINOR
    elif [ "$MAJOR" = "77" ]; then
      list_ida 5 $MINOR
    elif [ "$MAJOR" = "78" ]; then
      list_ida 6 $MINOR
    elif [ "$MAJOR" = "79" ]; then
      list_ida 7 $MINOR
    elif [ "$MAJOR" = "80" ]; then
      list_ide $MAJOR $MINOR hdm hdn
    elif [ "$MAJOR" = "89" ]; then
      list_ide $MAJOR $MINOR hdo hdp
    elif [ "$MAJOR" = "90" ]; then
      list_ide $MAJOR $MINOR hdq hdr
    elif [ "$MAJOR" = "91" ]; then
      list_ide $MAJOR $MINOR hds hdt
    elif [ "$MAJOR" = "101" ]; then
      list_amiraid $MAJOR $MINOR
    elif [ "$MAJOR" = "104" \
      -o "$MAJOR" = "105" \
      -o "$MAJOR" = "106" \
      -o "$MAJOR" = "107" \
      -o "$MAJOR" = "108" \
      -o "$MAJOR" = "109" \
      -o "$MAJOR" = "110" \
      -o "$MAJOR" = "111" ]; then
      list_cciss $(( $MAJOR - 104 )) $MINOR
    elif [ "$MAJOR" = "114" ]; then
      list_ataraid $MAJOR $MINOR
    fi
  done
else # old format and no RAID:
  if cat /proc/partitions | grep md 1> /dev/null 2> /dev/null ; then
    cat /proc/partitions | grep md | while read line ; do
      SMASHED_LINE=$line
      MAJOR=`echo $SMASHED_LINE | cut -f 1 -d ' '`
      if [ "$MAJOR" = "9" ]; then
        list_md `echo $SMASHED_LINE | cut -f 3 -d ' ' | tr -d '/'` \
                `echo $SMASHED_LINE | cut -f 4 -d ' '`
      fi
    done
  fi
  fdisk -l >> $TMP/SeTfdisk
fi
 
cat $TMP/SeTfdisk

Mais uma vez eu acho que isso é pau do udev no slack, o udev no kernel 2.6 no slack ta com um bug que não pega as permissoes dos devices corretamente....