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456
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Tags:
dual-boot
partitioning
mount
gparted
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🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/1034746
Title:
Unable to read files between two distros
ID:
/2018/05/11/Unable-to-read-files-between-two-distros
Created:
May 11, 2018
Edited: May 12, 2018
Upload:
September 15, 2024
Layout: post
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Doing it manually
Mount the 2nd Distro with these commands
sudo mkdir /mnt/MyOtherDistro
sudo mount -t auto -v /dev/sdb5 /mnt/MyOtherDistro
Now you will be able to use Nautilus or any other file manager to navigate to the directory /mnt/MyOtherDistro to view / copy / delete files, etc.
You can also change to a directory in the 2nd Distro:
cd /mnt/MyOtherDistro/home/Me/Documents
When you are done unmount the partition and delete the directory:
sudo umount -l /mnt/MyOtherDistro
sudo rm -d /mnt/MyOtherDistro
Doing it with a bash script
As luck would have it I was just working on two scripts tonight to mount and unmount partitions via a command line scroll box.
Mount a partition
To mount a partition run the bash script sudo mount-menu.sh:
Highlight an unmounted partition and press Enter. It will be mounted and some basic information about the partition will be displayed:
=====================================================================
Mount Device: /dev/nvme0n1p8
Mount Name: /mnt/mount-menu.b9yZf
File System: ext4
ID: Ubuntu
RELEASE: 18.04
CODENAME: bionic
DESCRIPTION: Ubuntu 18.04 LTS
Size Used Avail Use%
24G 17G 5.2G 77%
To create the script, copy the following to a file called /usr/local/bin/mount-menu.sh:
#!/bin/bash
# NAME: mount-menu.sh
# PATH: /usr/local/bin
# DESC: Select unmounted partition for mounting
# DATE: May 9, 2018. Modified May 11, 2018.
# $TERM variable may be missing when called via desktop shortcut
CurrentTERM=$(env | grep TERM)
if [[ $CurrentTERM == "" ]] ; then
notify-send --urgency=critical \
"$0 cannot be run from GUI without TERM environment variable."
exit 1
fi
# Must run as root
if [[ $(id -u) -ne 0 ]] ; then echo "Usage: sudo $0" ; exit 1 ; fi
#
# Create unqique temporary file names
#
tmpMenu=$(mktemp /tmp/mount-menu.XXXXX) # Menu list
tmpInfo=$(mktemp /tmp/mount-menu.XXXXX) # Mount Parition Info
tmpWork=$(mktemp /tmp/mount-menu.XXXXX) # Work file
MountName=$(mktemp -d /mnt/mount-menu.XXXXX) # Mount directory name
#
# Function Cleanup () Removes temporary files
#
CleanUp () {
[[ -f $tmpMenu ]] && rm -f $tmpMenu # If temporary files created
[[ -f $tmpInfo ]] && rm -f $tmpInfo # at various program stages
[[ -f $tmpWork ]] && rm -f $tmpWork # remove them before exiting.
}
#
# Mainline
#
lsblk -o NAME,FSTYPE,LABEL,SIZE,MOUNTPOINT > $tmpMenu
i=0
SPACES=' '
DoHeading=true
AllPartsArr=() # All partitions.
# Build whiptail menu tags ($i) and text ($Line) into array
while read -r Line; do
if [[ $DoHeading == true ]] ; then
DoHeading=false # First line is the heading.
MenuText="$Line" # Heading for whiptail.
FSTYPE_col="${Line%%FSTYPE*}"
FSTYPE_col="${#FSTYPE_col}" # FS Type, ie `ext4`, `ntfs`, etc.
MOUNTPOINT_col="${Line%%MOUNTPOINT*}"
MOUNTPOINT_col="${#MOUNTPOINT_col}" # Required to ensure not mounted.
continue
fi
Line="$Line$SPACES" # Pad extra white space.
Line=${Line:0:74} # Truncate to 74 chars for menu.
AllPartsArr+=($i "$Line") # Menu array entry = Tag# + Text.
(( i++ ))
done < $tmpMenu # Read next "lsblk" line.
#
# Display whiptail menu in while loop until no errors, or escape,
# or valid partion selection .
#
DefaultItem=0
while true ; do
# Call whiptail in loop to paint menu and get user selection
Choice=$(whiptail \
--title "Use arrow, page, home & end keys. Tab toggle option" \
--backtitle "Mount Partition" \
--ok-button "Select unmounted partition" \
--cancel-button "Exit" \
--notags \
--default-item "$DefaultItem" \
--menu "$MenuText" 24 80 16 \
"${AllPartsArr[@]}" \
2>&1 >/dev/tty)
clear # Clear screen.
if [[ $Choice == "" ]]; then # Escape or dialog "Exit".
CleanUp
exit 1;
fi
DefaultItem=$Choice # whiptail start option.
ArrNdx=$(( $Choice * 2 + 1)) # Calculate array offset.
Line="${AllPartsArr[$ArrNdx]}" # Array entry into $Line.
# Validation - Don't wipe out Windows or Ubuntu 16.04:
# - Partition must be ext4 and cannot be mounted.
if [[ "${Line:MOUNTPOINT_col:4}" != " " ]] ; then
echo "Partition is already mounted."
read -p "Press <Enter> to continue"
continue
fi
# Build "/dev/Xxxxx" FS name from "├─Xxxxx" menu line
MountDev="${Line%% *}"
MountDev=/dev/"${MountDev:2:999}"
# Build File System Type
MountType="${Line:FSTYPE_col:999}"
MountType="${MountType%% *}"
break # Validated: Break menu loop.
done # Loop while errors.
#
# Mount partition
#
echo ""
echo "====================================================================="
mount -t auto $MountDev $MountName
# Display partition information.
echo "Mount Device=$MountDev" > $tmpInfo
echo "Mount Name=$MountName" >> $tmpInfo
echo "File System=$MountType" >> $tmpInfo
# Build Mount information (the partition selected for cloning to)
LineCnt=$(ls $MountName | wc -l)
if (( LineCnt > 2 )) ; then
# More than /Lost+Found exist so it's not an empty partition.
if [[ -f $MountName/etc/lsb-release ]] ; then
cat $MountName/etc/lsb-release >> $tmpInfo
else
echo "No LSB-Release file on Partition." >> $tmpInfo
fi
else
echo "Partition appears empty" >> $tmpInfo
echo "/Lost+Found normal in empty partition" >> $tmpInfo
echo "First two files/directories below:" >> $tmpInfo
ls $MountName | head -n2 >> $tmpInfo
fi
sed -i 's/DISTRIB_//g' $tmpInfo # Remove DISTRIB_ prefix.
sed -i 's/=/:=/g' $tmpInfo # Change "=" to ":="
sed -i 's/"//g' $tmpInfo # Remove " around "Ubuntu 16.04...".
# Align columns from "Xxxx:=Yyyy" to "Xxxx: Yyyy"
cat $tmpInfo | column -t -s '=' > $tmpWork
cat $tmpWork > $tmpInfo
# Mount device free bytes
df -h --output=size,used,avail,pcent "$MountDev" >> $tmpInfo
# Display partition information.
cat $tmpInfo
CleanUp # Remove temporary files
exit 0
Unmount a partition
To unmount the partition setup by mount-menu.sh run the command sudo umount-menu.sh. The same screen shown above appears except the partition is already mounted and you select it to unmount it. First you need to create the script /usr/local/bin/umount-menu.sh and copy in the lines below:
#!/bin/bash
# NAME: umount-menu.sh
# PATH: /usr/local/bin
# DESC: Select mounted partition for unmounting
# DATE: May 10, 2018. Modified May 11, 2018.
# $TERM variable may be missing when called via desktop shortcut
CurrentTERM=$(env | grep TERM)
if [[ $CurrentTERM == "" ]] ; then
notify-send --urgency=critical \
"$0 cannot be run from GUI without TERM environment variable."
exit 1
fi
# Must run as root
if [[ $(id -u) -ne 0 ]] ; then echo "Usage: sudo $0" ; exit 1 ; fi
#
# Create unqique temporary file names
#
tmpMenu=$(mktemp /tmp/mount-menu.XXXXX) # Menu list
#
# Function Cleanup () Removes temporary files
#
CleanUp () {
[[ -f "$tmpMenu" ]] && rm -f "$tmpMenu" # at various program stages
}
#
# Mainline
#
lsblk -o NAME,FSTYPE,LABEL,SIZE,MOUNTPOINT > "$tmpMenu"
i=0
SPACES=' '
DoHeading=true
AllPartsArr=() # All partitions.
# Build whiptail menu tags ($i) and text ($Line) into array
while read -r Line; do
if [[ $DoHeading == true ]] ; then
DoHeading=false # First line is the heading.
MenuText="$Line" # Heading for whiptail.
MOUNTPOINT_col="${Line%%MOUNTPOINT*}"
MOUNTPOINT_col="${#MOUNTPOINT_col}" # Required to ensure mounted.
continue
fi
Line="$Line$SPACES" # Pad extra white space.
Line=${Line:0:74} # Truncate to 74 chars for menu.
AllPartsArr+=($i "$Line") # Menu array entry = Tag# + Text.
(( i++ ))
done < "$tmpMenu" # Read next "lsblk" line.
#
# Display whiptail menu in while loop until no errors, or escape,
# or valid partion selection .
#
DefaultItem=0
while true ; do
# Call whiptail in loop to paint menu and get user selection
Choice=$(whiptail \
--title "Use arrow, page, home & end keys. Tab toggle option" \
--backtitle "Mount Partition" \
--ok-button "Select unmounted partition" \
--cancel-button "Exit" \
--notags \
--default-item "$DefaultItem" \
--menu "$MenuText" 24 80 16 \
"${AllPartsArr[@]}" \
2>&1 >/dev/tty)
clear # Clear screen.
if [[ $Choice == "" ]]; then # Escape or dialog "Exit".
CleanUp
exit 1;
fi
DefaultItem=$Choice # whiptail start option.
ArrNdx=$(( $Choice * 2 + 1)) # Calculate array offset.
Line="${AllPartsArr[$ArrNdx]}" # Array entry into $Line.
if [[ "${Line:MOUNTPOINT_col:15}" != "/mnt/mount-menu" ]] ; then
echo "Only Partitions mounted by mount-menu.sh can be unounted."
read -p "Press <Enter> to continue"
continue
fi
# Build "/dev/Xxxxx" FS name from "├─Xxxxx" menu line
MountDev="${Line%% *}"
MountDev=/dev/"${MountDev:2:999}"
# Build Mount Name
MountName="${Line:MOUNTPOINT_col:999}"
MountName="${MountName%% *}"
break # Validated: Break menu loop.
done # Loop while errors.
#
# Unmount partition
#
echo ""
echo "====================================================================="
umount "$MountName" -l # Unmount the clone
rm -d "$MountName" # Remove clone directory
echo $(tput bold) # Set to bold text
echo $MountDev mounted on $MountName unmounted.
echo $(tput sgr0) # Reset to normal text
CleanUp # Remove temporary files
exit 0
Make them executable
After creating the files, both scripts must be marked executable:
sudo chmod a+x /usr/local/bin/mount-menu.sh
sudo chmod a+x /usr/local/bin/umount-menu.sh