[Samsung Galaxy Alpha] gggg:
Here are the infos from my device (SM-A500FU):

PLease tell us how to dd PIT and EFS:

PIT: dd if=/dev/block/BBB of=/storage/extSdCard/sm-a500fu/backup/dd/out.pit bs=8 count=CCC skip=SSS

1. How to get the missing items right ?

Reference Post: http://xdaforums.com/showthread.php?p=52329632

I dont know if this is OK: dd if=/dev/block/mmcblk0 of=/sdcard/out.pit bs=8 count=580 skip=2176

cat /proc/partitions
major minor #blocks name

179 0 15388672 mmcblk0
179 1 15360 mmcblk0p1
179 2 58816 mmcblk0p2
179 3 512 mmcblk0p3
179 4 32 mmcblk0p4
179 5 2048 mmcblk0p5
179 6 512 mmcblk0p6
179 7 512 mmcblk0p7
179 8 512 mmcblk0p8
179 9 3072 mmcblk0p9
179 10 16 mmcblk0p10
179 11 10768 mmcblk0p11
179 12 10240 mmcblk0p12
179 13 14336 mmcblk0p13
179 14 3072 mmcblk0p14
179 15 3072 mmcblk0p15
179 16 13312 mmcblk0p16
179 17 15360 mmcblk0p17
179 18 5121 mmcblk0p18
179 19 7159 mmcblk0p19
179 20 3072 mmcblk0p20
179 21 8 mmcblk0p21
179 22 8192 mmcblk0p22
179 23 9216 mmcblk0p23
179 24 2457600 mmcblk0p24
179 25 204800 mmcblk0p25
179 26 61440 mmcblk0p26
179 27 12476396 mmcblk0p27
179 32 4096 mmcblk0rpmb
179 64 3872256 mmcblk1
179 65 3868149 mmcblk1p1

/dev/block # ll
lrwxrwxrwx root root 2014-06-26 22:19 bootdevice -> /dev/block/platform/7824900.sdhci
brw------- root root 7, 0 2014-06-26 22:19 loop0
brw------- root root 7, 1 2014-06-26 22:19 loop1
brw------- root root 7, 2 2014-06-26 22:19 loop2
brw------- root root 7, 3 2014-06-26 22:19 loop3
brw------- root root 7, 4 2014-06-26 22:19 loop4
brw------- root root 7, 5 2014-06-26 22:19 loop5
brw------- root root 7, 6 2014-06-26 22:19 loop6
brw------- root root 7, 7 2014-06-26 22:19 loop7
brw------- root root 179, 0 2014-06-26 22:19 mmcblk0
brw------- root root 179, 1 2014-06-26 22:19 mmcblk0p1
brw------- root root 179, 10 2014-06-26 22:19 mmcblk0p10
brw------- root root 179, 11 2014-06-26 22:19 mmcblk0p11
brw-rw---- system system 179, 12 2015-07-31 18:00 mmcblk0p12
brw------- root root 179, 13 2014-06-26 22:19 mmcblk0p13
brw------- root root 179, 14 2015-07-31 18:09 mmcblk0p14
brw------- root root 179, 15 2015-07-31 18:00 mmcblk0p15
brw------- root root 179, 16 2014-06-26 22:19 mmcblk0p16
brw------- root root 179, 17 2014-06-26 22:19 mmcblk0p17
brw------- root root 179, 18 2014-06-26 22:19 mmcblk0p18
brw------- root root 179, 19 2014-06-26 22:19 mmcblk0p19
brw------- root root 179, 2 2014-06-26 22:19 mmcblk0p2
brw------- root root 179, 20 2014-06-26 22:19 mmcblk0p20
brw------- root root 179, 21 2014-06-26 22:19 mmcblk0p21
brw------- root root 179, 22 2014-06-26 22:19 mmcblk0p22
brw------- root root 179, 23 2014-06-26 22:19 mmcblk0p23
brw------- root root 179, 24 2014-06-26 22:19 mmcblk0p24
brw------- root root 179, 25 2014-06-26 22:19 mmcblk0p25
brw------- root root 179, 26 2014-06-26 22:19 mmcblk0p26
brw------- root root 179, 27 2014-06-26 22:19 mmcblk0p27
brw------- root root 179, 3 2014-06-26 22:19 mmcblk0p3
brw------- root root 179, 4 2014-06-26 22:19 mmcblk0p4
brw------- root root 179, 5 2014-06-26 22:19 mmcblk0p5
brw------- root root 179, 6 2014-06-26 22:19 mmcblk0p6
brw------- root root 179, 7 2014-06-26 22:19 mmcblk0p7
brw------- root root 179, 8 2014-06-26 22:19 mmcblk0p8
brw------- root root 179, 9 2014-06-26 22:19 mmcblk0p9
brw------- root root 179, 32 2014-06-26 22:19 mmcblk0rpmb
brw------- root root 179, 64 2014-06-26 22:19 mmcblk1
brw------- root root 179, 65 2014-06-26 22:19 mmcblk1p1
lrwxrwxrwx root root 2015-07-31 17:59 param -> /dev/block/platform/7824900.sdhci/by-name/param
drwxr-xr-x root root 2014-06-26 22:19 platform
brw------- root root 1, 0 2014-06-26 22:19 ram0
brw------- root root 1, 1 2014-06-26 22:19 ram1
brw------- root root 1, 10 2014-06-26 22:19 ram10
brw------- root root 1, 11 2014-06-26 22:19 ram11
brw------- root root 1, 12 2014-06-26 22:19 ram12
brw------- root root 1, 13 2014-06-26 22:19 ram13
brw------- root root 1, 14 2014-06-26 22:19 ram14
brw------- root root 1, 15 2014-06-26 22:19 ram15
brw------- root root 1, 2 2014-06-26 22:19 ram2
brw------- root root 1, 3 2014-06-26 22:19 ram3
brw------- root root 1, 4 2014-06-26 22:19 ram4
brw------- root root 1, 5 2014-06-26 22:19 ram5
brw------- root root 1, 6 2014-06-26 22:19 ram6
brw------- root root 1, 7 2014-06-26 22:19 ram7
brw------- root root 1, 8 2014-06-26 22:19 ram8
brw------- root root 1, 9 2014-06-26 22:19 ram9
drwx------ root root 2015-07-31 17:59 vold

/dev/block/platform # ll
drwxr-xr-x root root 2014-06-26 22:19 7824900.sdhci
drwxr-xr-x root root 2014-06-26 22:19 7864900.sdhci

/dev/block/platform/7864900.sdhci # ll
drwxr-xr-x root root 2014-06-26 22:19 by-num
lrwxrwxrwx root root 2014-06-26 22:19 mmcblk1 -> /dev/block/mmcblk1
lrwxrwxrwx root root 2014-06-26 22:19 mmcblk1p1 -> /dev/block/mmcblk1p1

/dev/block/platform/7824900.sdhci/by-name # ll
lrwxrwxrwx root root 2014-06-26 22:19 aboot -> /dev/block/mmcblk0p5
lrwxrwxrwx root root 2014-06-26 22:19 apnhlos -> /dev/block/mmcblk0p1
lrwxrwxrwx root root 2014-06-26 22:19 backup -> /dev/block/mmcblk0p19
lrwxrwxrwx root root 2014-06-26 22:19 boot -> /dev/block/mmcblk0p16
lrwxrwxrwx root root 2014-06-26 22:19 cache -> /dev/block/mmcblk0p25
lrwxrwxrwx root root 2014-06-26 22:19 ddr -> /dev/block/mmcblk0p4
lrwxrwxrwx root root 2014-06-26 22:19 efs -> /dev/block/mmcblk0p13
lrwxrwxrwx root root 2014-06-26 22:19 fota -> /dev/block/mmcblk0p18
lrwxrwxrwx root root 2014-06-26 22:19 fsc -> /dev/block/mmcblk0p20
lrwxrwxrwx root root 2014-06-26 22:19 fsg -> /dev/block/mmcblk0p9
lrwxrwxrwx root root 2014-06-26 22:19 hidden -> /dev/block/mmcblk0p26
lrwxrwxrwx root root 2014-06-26 22:19 modem -> /dev/block/mmcblk0p2
lrwxrwxrwx root root 2014-06-26 22:19 modemst1 -> /dev/block/mmcblk0p14
lrwxrwxrwx root root 2014-06-26 22:19 modemst2 -> /dev/block/mmcblk0p15
lrwxrwxrwx root root 2014-06-26 22:19 pad -> /dev/block/mmcblk0p11
lrwxrwxrwx root root 2014-06-26 22:19 param -> /dev/block/mmcblk0p12
lrwxrwxrwx root root 2014-06-26 22:19 persdata -> /dev/block/mmcblk0p23
lrwxrwxrwx root root 2014-06-26 22:19 persist -> /dev/block/mmcblk0p22
lrwxrwxrwx root root 2014-06-26 22:19 qhee -> /dev/block/mmcblk0p8
lrwxrwxrwx root root 2014-06-26 22:19 qsee -> /dev/block/mmcblk0p7
lrwxrwxrwx root root 2014-06-26 22:19 recovery -> /dev/block/mmcblk0p17
lrwxrwxrwx root root 2014-06-26 22:19 rpm -> /dev/block/mmcblk0p6
lrwxrwxrwx root root 2014-06-26 22:19 sbl1 -> /dev/block/mmcblk0p3
lrwxrwxrwx root root 2014-06-26 22:19 sec -> /dev/block/mmcblk0p10
lrwxrwxrwx root root 2014-06-26 22:19 ssd -> /dev/block/mmcblk0p21
lrwxrwxrwx root root 2014-06-26 22:19 system -> /dev/block/mmcblk0p24
lrwxrwxrwx root root 2014-06-26 22:19 userdata -> /dev/block/mmcblk0p27

2. Must we save all of those for EFS and is the ending .img OK ?

dd if=/dev/block/platform/7824900.sdhci/by-name/efs of=/storage/extSdCard/sm-a500fu/backup/dd/EFS_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/modemst1 of=/storage/extSdCard/sm-a500fu/backup/dd/modemst1_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/modemst2 of=/storage/extSdCard/sm-a500fu/backup/dd/modemst2_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/modem of=/storage/extSdCard/sm-a500fu/backup/dd/modem_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img

3. Should we save those too ?

dd if=/dev/block/mmcblk1 of=/storage/extSdCard/sm-a500fu/backup/dd/mmcblk1_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/mmcblk1p1 of=/storage/extSdCard/sm-a500fu/backup/dd/mmcblk1p1_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img

4. And what of the rest is useless ?

dd if=/dev/block/platform/7824900.sdhci/by-name/aboot of=/storage/extSdCard/sm-a500fu/backup/dd/aboot_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/apnhlos of=/storage/extSdCard/sm-a500fu/backup/dd/apnhlos_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/backup of=/storage/extSdCard/sm-a500fu/backup/dd/backup_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/boot of=/storage/extSdCard/sm-a500fu/backup/dd/boot_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/cache of=/storage/extSdCard/sm-a500fu/backup/dd/cache_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/ddr of=/storage/extSdCard/sm-a500fu/backup/dd/ddr-RADIO_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img

dd if=/dev/block/platform/7824900.sdhci/by-name/efs of=/storage/extSdCard/sm-a500fu/backup/dd/EFS_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/modemst1 of=/storage/extSdCard/sm-a500fu/backup/dd/modemst1_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/modemst2 of=/storage/extSdCard/sm-a500fu/backup/dd/modemst2_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/modem of=/storage/extSdCard/sm-a500fu/backup/dd/modem_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img

dd if=/dev/block/platform/7824900.sdhci/by-name/fota of=/storage/extSdCard/sm-a500fu/backup/dd/fota_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/fsc of=/storage/extSdCard/sm-a500fu/backup/dd/fsc_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/fsg of=/storage/extSdCard/sm-a500fu/backup/dd/fsg_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/hidden of=/storage/extSdCard/sm-a500fu/backup/dd/hidden_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/pad of=/storage/extSdCard/sm-a500fu/backup/dd/pad_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/param of=/storage/extSdCard/sm-a500fu/backup/dd/param_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/persdata of=/storage/extSdCard/sm-a500fu/backup/dd/persdata_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/persist of=/storage/extSdCard/sm-a500fu/backup/dd/persist_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/qhee of=/storage/extSdCard/sm-a500fu/backup/dd/qhee_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/qsee of=/storage/extSdCard/sm-a500fu/backup/dd/qsee_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/recovery of=/storage/extSdCard/sm-a500fu/backup/dd/recovery_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/rpm of=/storage/extSdCard/sm-a500fu/backup/dd/rpm_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/sbl1 of=/storage/extSdCard/sm-a500fu/backup/dd/sbl1_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/sec of=/storage/extSdCard/sm-a500fu/backup/dd/sec_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/ssd of=/storage/extSdCard/sm-a500fu/backup/dd/ssd_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/system of=/storage/extSdCard/sm-a500fu/backup/dd/system_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img
dd if=/dev/block/platform/7824900.sdhci/by-name/userdata of=/storage/extSdCard/sm-a500fu/backup/dd/userdata_A500FUXXU1AOB4_A500FUOXA1AOB1_A500FUXXU1AOB4_dd.img