[Android Q&A, Help & Troubleshooting] kdm6389:
This page is trying to find out which partition is for what ?

Model: MMC P1J95K (sd/mmc)
Disk /dev/block/mmcblk0: 15302656s
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 131072s 262143s 131072s fat16 modem
2 262144s 265215s 3072s tunning
3 265216s 267263s 2048s traceability
4 267264s 267265s 2s fsc
5 267266s 267281s 16s ssd
6 267282s 268305s 1024s sbl1
7 268306s 269329s 1024s sbl1bak
8 269330s 270353s 1024s rpm
9 270354s 271377s 1024s rpmbak
10 271378s 272401s 1024s tz
11 272402s 273425s 1024s tzbak
12 273426s 275473s 2048s pad
13 275474s 276497s 1024s hyp
14 276498s 277521s 1024s hypbak
15 277522s 280593s 3072s modemst1
16 280594s 283665s 3072s modemst2
17 283666s 285713s 2048s simlock
18 285714s 288785s 3072s efsdata
19 393216s 393279s 64s DDR
20 393280s 396351s 3072s fsg
21 396352s 396383s 32s sec
22 396384s 398431s 2048s aboot
23 398432s 400479s 2048s abootbak
24 400480s 466015s 65536s boot
25 466016s 531551s 65536s recovery
26 531552s 5898239s 5366688s ext2 system
27 5898240s 5963775s 65536s ext4 persist
28 5963776s 6004735s 40960s reserved
29 6004736s 6021119s 16384s splash
30 6021120s 6062079s 40960s ext4 tctpersist
31 6062080s 6082559s 20480s ext4 hdcp
32 6082560s 6082575s 16s fota
33 6082576s 6606863s 524288s ext4 cache
34 6606864s 6608911s 2048s misc
35 6608912s 6613007s 4096s persistent
36 6684672s 6686719s 2048s devinfo
37 6815744s 6816767s 1024s keystore
38 6816768s 6816831s 64s config
39 6816832s 6816959s 128s oem
40 6816960s 6823151s 6192s redbend
41 6823152s 6825199s 2048s ciqbp
42 6825200s 6827247s 2048s ciqap
43 6827248s 15302622s 8475375s ext4 userdata

25. recovery - partition to be used for recovery boots this is allinone image to let you boot when all door closed.

26. system - this is android which is booted once linux bootup and mounted at /system

33. cache - for temporary work usually lost after reboot but not always

43. userdata - this partition hold userdata, internal sd (/storage/sdcard0 or /sdcard), internal app installed mainly mounted at /data

10. tz

11. tzbak - Trusted Zone and back up are trusted zone providers to android

5. ssd - secure software download; "Secure Software Download" is a memory based file system (RAMFS) for secure storage, used to download and store "who knows what" on the eMMC. It is a referenced part in the Remote Storage RPC Client of the MSM kernel.

6. sbl1 - secondary bootloader

7. sbl1bak - secondary bootloader backup

8. rpm - resource and power manager [MENTION=7383447]MotoJunkie01[/MENTION] /rpm is also known as primary bootloader, and flashing this partition should always be avoided if at all possible. /rpm, /sbl1, /tz, and /aboot are all considered bootloaders.

9. rpmbak - resource and power manager backup

24. boot - this partition holds kernel and initrd.gz

15. modemst1 - Modem1 (NV data)

16. modemst2 - Modem2 (NV data)

22. aboot - AP Bootloader {AP has some thing to do with APN configuration}

23. abootbak - AP Bootloader backup

20. fsg - Probably stands for File System (FS) "Golden". According to Samsung documentation, this partition is a "Golden Copy". This is partially confirmed by RE of the PARAM partition, which indicate that this partition should contain a copy of MODEMST1. As such it is a backup of the current EFS2 filesystem. The creation of a FSG is not supported on flash devices and the internal (QMI) DIAG request "EFS2_DIAG_MAKE_GOLDEN_COPY", can only be used to create a backup one time over the life of the device. [80-V1294-11] ref

rest of the partition you write