Скачать или смотреть Part45 Wiping / Erasing eMMC disks with Wipe Script

Use mmc-utils to secure erase eMMC / MMC disks in a Linux based PXE (Pre Execution Environment), an extension of:
Part17 Erase_Disk process in    • Part17 Wiping and Imaging Computers. Wipin...  
Part18 Create a Linux PXE bootable image    • Part18 Wiping and Imaging Computers. Creat...  
Part19 Configure chroot to run wipe scripts and boot from the USB    • Part19 Wiping and Imaging Computers. Confi...  

00:00 Process Demo using Erase_Disk
Get mmc-utils from https://github.com/mhei/mmc-utils
00.13 Building mmc executable
Download the latest source code, version available from apt-get may not be the most recent
Build it with make
All code is in github https://github.com/pnesfield/Wiping-a...
03:04 changes to erase_script.sh
skip section to find erase time with hdparm (doesn't work with MMC)
erase_script.sh
============
for drive in $drives_selected; do
#Only SATA
if [[ ( $drive != "nvme" ) && ( $drive != "mmc" ) ]]; then
echo "Checking $drive"
. .
fi

03:45 changes to wipe_disk.sh
Angled brackets not allowed, change [CHANGEME] to right angled bracket

wipe_disk.sh
==========
if [[ $drive == "mmc" ]]; then
MYTIMEVAR=`date +'%k:%M:%S'`
SIZE=`lsblk -nio SIZE,TYPE /dev/$drive | grep disk | awk '{print $1}'`
SERIAL=`lsblk -nio SERIAL /dev/$drive | awk '{print $1}'`
#SERIAL=`udevadm info -a -n /dev/$drive | grep serial | awk -F"=" '{print $3}' | sed -e 's/"//g'`
#This returns blanks
#MODEL=`lsblk -nio MODEL /dev/$drive | awk '{print $1}'`
MODEL=`udevadm info -a -n /dev/$drive | grep name | awk -F"=" '{print $3}' | sed -e 's/"//g'`
echo "MMC secure-erase started at $MYTIMEVAR" [CHANGEME][CHANGEME] $logfile
echo "Model $MODEL Size $SIZE Serial $SERIAL" [CHANGEME][CHANGEME] $logfile
HEXTYPE=`./mmc extcsd read /dev/$drive | grep "REMOVAL_TYPE" | awk -F":" '{print $2}'`
SECTORS=`blockdev --getsz /dev/$drive`
LAST=$(($SECTORS - 1))
ERASE_TYPE="secure-erase"
echo mmc erase $ERASE_TYPE 0 $LAST /dev/$drive 2[CHANGEME]&1 3[CHANGEME]&1 [CHANGEME][CHANGEME] $logfile
./mmc erase $ERASE_TYPE 0 $LAST /dev/$drive 2[CHANGEME]&1 3[CHANGEME]&1 [CHANGEME][CHANGEME] $logfile
ok=$?
if [ $ok == 0 ]; then
echo "Success" [CHANGEME][CHANGEME] $logfile
#source ./disk_log.sh $drive $FILE "$ERASE_TYPE"
#source ./disk_splash.sh $drive $ERASE_TYPE
elif [ $ok == 1 ]; then
echo "Failed: $ERASE_TYPE operation not supported" [CHANGEME][CHANGEME] $logfile
./fail.sh
elif [ $ok == 127 ]; then
echo "Failed: $ERASE_TYPE operation not supported" [CHANGEME][CHANGEME] $logfile
ERASE_TYPE="legacy"
echo mmc erase $ERASE_TYPE 0 $LAST /dev/$drive 2[CHANGEME]&1 3[CHANGEME]&1 [CHANGEME][CHANGEME] $logfile
./mmc erase $ERASE_TYPE 0 $LAST /dev/$drive 2[CHANGEME]&1 3[CHANGEME]&1 [CHANGEME] $logfile
ok=$?
if [ $ok == 0 ]; then
echo "Success" [CHANGEME] [CHANGEME]$logfile
#source ./disk_log.sh $drive $FILE "$ERASE_TYPE"
#source ./disk_splash.sh $drive $ERASE_TYPE
else
echo "Failed: $ok" [CHANGEME] [CHANGEME]$logfile
./fail.sh
fi
else
echo "Failed: $ok" [CHANGEME] [CHANGEME]$logfile
./fail.sh
fi
MYTIMEVAR=`date +'%k:%M:%S'`
echo " finished at $MYTIMEVAR" [CHANGEME] [CHANGEME]$logfile

else

04:39 fail.sh
fail.sh
=====
#!/bin/bash
#https://manytools.org/hacker-tools/as...
red='\033[0;31m'
off='\033[0;0m'
echo -e "${red}
####### # ### #
# # # #
# # # #
##### # # # #
####### # #
# # # #
# # ### #######.${off}"