Created
March 4, 2023 20:26
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.Bash script to restore the UEFI boot entries from the backup file.
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| #!/bin/bash | |
| # Use this script to restore boot entries from a backup made by executing the command: sudo efibootmgr -v > boot_entries.txt | |
| # Remember to change the name of the backup file if you named it something else. | |
| # Path to the backup file containing the UEFI boot entries | |
| BACKUP_FILE="bootentries.txt" | |
| # Command to restore each boot entry from the backup file | |
| RESTORE_CMD="sudo efibootmgr -c -w -d /dev/sda -p 1 -L \"{LABEL}\" -l \"{LOADER}\" -u {OPTIONS}" | |
| # Read the backup file line by line and restore each boot entry | |
| while read line; do | |
| # Skip lines that don't contain boot entries | |
| if [[ ! "$line" =~ ^Boot[0-9a-fA-F]+\* ]]; then | |
| continue | |
| fi | |
| # Extract the boot entry ID, label, loader path, and options from the line | |
| id=$(echo "$line" | cut -d "*" -f 1 | cut -d " " -f 2) | |
| label=$(echo "$line" | sed -n 's/^.*Boot\([0-9a-fA-F]\{4\}\)\*.*/\1/p') | |
| loader=$(echo "$line" | sed -n 's/^.*File\\\(.*\)\)/\1/p' | sed 's/\\/\//g' | cut -d "{" -f 1) | |
| options=$(echo "$line" | sed -n 's/^.*options:\s*\(.*\)/\1/p') | |
| # Build the command to restore the boot entry and execute it | |
| restore_cmd=$(echo "$RESTORE_CMD" | sed "s/{LABEL}/$label/" | sed "s/{LOADER}/$loader/" | sed "s/{OPTIONS}/$options/" | sed "s/{ID}/$id/") | |
| eval "$restore_cmd" | |
| done < "$BACKUP_FILE" |
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