[Samsung Galaxy S Duos 2] vascotech88:
Few more notes:

I tried to make a full 4 file flash (PIT+BOOT+PDA+PHONE+CSC), went ok, but nothing changed.

a) Accessed the phone via ADB shell (via TWRP) and navigated to "/dev/block/". I think I should be supposed to see the partitions here, but I only see mmcblk0 (no mmcblk0p1,2,3,...)

b) Trying "mount -a" gave me errors for /system, /data, /cache, etc. Saying that there is no such file or directory

c) Trying "cat /proc/partitions" gave me only mmcblk0 with 3817472 blocks

d) Trying "ls -la /dev/block/platform/sdhci.1" gave me only "mmcblk0 -> /dev/block/mmcblk0"

e) Trying "fdisk -l /dev/block/mmcblk0" gave me "Cant open (...) I/O error"

f) Trying "dmesg | grep mmc" i got the following:

[ 0.307891] C0 [ swapper/0] bcmpmu_regulator_probe:id:7, name:mmcldo1 pc_map=7 init_mode = 0
[ 0.308258] C0 [ swapper/0] mmcldo1: 1800 <--> 3300 mV at 2800 mV
[ 0.308654] C0 [ swapper/0] bcmpmu_regulator_probe:id:8, name:mmcldo2 pc_map=7 init_mode = 0
[ 0.309020] C0 [ swapper/0] mmcldo2: 1800 <--> 3300 mV at 2800 mV
[ 1.565277] C0 [ swapper/0] mmc0: no vmmc regulator found
[ 1.565521] C0 [ swapper/0] Registered led device: mmc0::
[ 1.566741] C0 [ swapper/0] mmc0: SDHCI controller on bcm_kona_sd [sdhci.1] using ADMA
[ 1.570556] C0 [ swapper/0] mmc1: no vmmc regulator found
[ 1.570739] C0 [ swapper/0] Registered led device: mmc1::
[ 1.571990] C0 [ swapper/0] mmc1: SDHCI controller on bcm_kona_sd [sdhci.2] using ADMA
[ 1.579925] C0 [ swapper/0] mmc2: no vmmc regulator found
[ 1.580078] C0 [ swapper/0] Registered led device: mmc2::
[ 1.584808] C0 [ swapper/0] mmc2: SDHCI controller on bcm_kona_sd [sdhci.0] using ADMA
[ 1.585083] C1 [irq/391-sdio cd] PNN:[mmc2] cd_interrupt
[ 1.585113] C1 [irq/391-sdio cd] PNN:[mmc2] cd_interrupt insert
[ 1.585113] C1 [irq/391-sdio cd] PNN: [mmc2]sd_card_emulate : insert
[ 1.705841] C0 [ kworker/u:2] mmc_read_ext_csd, 304 : mmc0[sdhci.1], ext_csd revision == 6
[ 1.705871] C0 [ kworker/u:2] <6>mmc_read_ext_csd: card->ext_csd.rpmb_size: 524288
[ 1.711975] C1 [irq/391-sdio cd] PNN:[mmc2] cd_interrupt
[ 1.712005] C1 [irq/391-sdio cd] PNN:[mmc2] cd_interrupt removal
[ 1.712005] C1 [irq/391-sdio cd] PNN: [mmc2]sd_card_emulate : removal
[ 1.716247] C0 [ kworker/u:2] mmc0: new high speed MMC card at address 0001
[ 1.716674] C0 [ kworker/u:2] mmcblk0: mmc0:0001 K5XYMB 3.64 GiB
[ 4.308410] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, retrying
[ 4.308471] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, retrying
[ 4.308532] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, aborting
[ 4.318603] C1 [ mmcqd/0] mmc0: Controller never released inhibit bit(s).
[ 4.318634] C1 [ mmcqd/0] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 4.318664] C1 [ mmcqd/0] sdhci: Sys addr: 0x00000000 | Version: 0x0000a702
[ 4.318664] C1 [ mmcqd/0] sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000008
[ 4.318695] C1 [ mmcqd/0] sdhci: Argument: 0x00000008 | Trn mode: 0x00000033
[ 4.318725] C1 [ mmcqd/0] sdhci: Present: 0x1fff0001 | Host ctl: 0x00000034
[ 4.318725] C1 [ mmcqd/0] sdhci: Power: 0x0000000b | Blk gap: 0x00000000
[ 4.318756] C1 [ mmcqd/0] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 4.318786] C1 [ mmcqd/0] sdhci: Timeout: 0x0000000e | Int stat: 0x00000000
[ 4.318786] C1 [ mmcqd/0] sdhci: Int enab: 0x02ff00bb | Sig enab: 0x02ff00bb
[ 4.318817] C1 [ mmcqd/0] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[ 4.318847] C1 [ mmcqd/0] sdhci: Caps: 0x07e934b4 | Caps_1: 0x03000064
[ 4.318847] C1 [ mmcqd/0] sdhci: Cmd: 0x0000171a | Max curr: 0x00000001
[ 4.318878] C1 [ mmcqd/0] sdhci: Host ctl2: 0x00000000
[ 4.318908] C1 [ mmcqd/0] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xae3fd008
[ 4.318908] C1 [ mmcqd/0] sdhci: ===========================================
[ 4.318969] C1 [ mmcqd/0] mmcblk0: error -5 sending status command, retrying
[ 4.319061] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, retrying
[ 4.319152] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, aborting
[ 4.319213] C1 [ kworker/u:2] mmcblk0: unknown partition table
[ 1166.903991] C1 [ mmcqd/0] mmc0: Controller never released inhibit bit(s).
[ 1166.904022] C1 [ mmcqd/0] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 1166.904052] C1 [ mmcqd/0] sdhci: Sys addr: 0x00000000 | Version: 0x0000a702
[ 1166.904052] C1 [ mmcqd/0] sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000008
[ 1166.904083] C1 [ mmcqd/0] sdhci: Argument: 0x00000020 | Trn mode: 0x00000033
[ 1166.904113] C1 [ mmcqd/0] sdhci: Present: 0x1fff0001 | Host ctl: 0x00000034
[ 1166.904113] C1 [ mmcqd/0] sdhci: Power: 0x0000000b | Blk gap: 0x00000000
[ 1166.904144] C1 [ mmcqd/0] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 1166.904174] C1 [ mmcqd/0] sdhci: Timeout: 0x0000000e | Int stat: 0x00000000
[ 1166.904174] C1 [ mmcqd/0] sdhci: Int enab: 0x02ff00bb | Sig enab: 0x02ff00bb
[ 1166.904205] C1 [ mmcqd/0] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[ 1166.904235] C1 [ mmcqd/0] sdhci: Caps: 0x07e934b4 | Caps_1: 0x03000064
[ 1166.904235] C1 [ mmcqd/0] sdhci: Cmd: 0x0000171a | Max curr: 0x00000001
[ 1166.904266] C1 [ mmcqd/0] sdhci: Host ctl2: 0x00000000
[ 1166.904296] C1 [ mmcqd/0] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xae3fd008
[ 1166.904296] C1 [ mmcqd/0] sdhci: ===========================================
[ 1166.911926] C1 [ mmcqd/0] mmcblk0: error -5 sending status command, retrying
[ 1166.912017] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, retrying
[ 1166.912078] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, aborting
[ 1166.922119] C1 [ mmcqd/0] mmc0: Controller never released inhibit bit(s).
[ 1166.922149] C1 [ mmcqd/0] sdhci: =========== REGISTER DUMP (mmc0)===========
[ 1166.922149] C1 [ mmcqd/0] sdhci: Sys addr: 0x00000000 | Version: 0x0000a702
[ 1166.922180] C1 [ mmcqd/0] sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000008
[ 1166.922210] C1 [ mmcqd/0] sdhci: Argument: 0x00000008 | Trn mode: 0x00000033
[ 1166.922210] C1 [ mmcqd/0] sdhci: Present: 0x1fff0001 | Host ctl: 0x00000034
[ 1166.922241] C1 [ mmcqd/0] sdhci: Power: 0x0000000b | Blk gap: 0x00000000
[ 1166.922271] C1 [ mmcqd/0] sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
[ 1166.922271] C1 [ mmcqd/0] sdhci: Timeout: 0x0000000e | Int stat: 0x00000000
[ 1166.922302] C1 [ mmcqd/0] sdhci: Int enab: 0x02ff00bb | Sig enab: 0x02ff00bb
[ 1166.922332] C1 [ mmcqd/0] sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
[ 1166.922332] C1 [ mmcqd/0] sdhci: Caps: 0x07e934b4 | Caps_1: 0x03000064
[ 1166.922363] C1 [ mmcqd/0] sdhci: Cmd: 0x0000171a | Max curr: 0x00000001
[ 1166.922393] C1 [ mmcqd/0] sdhci: Host ctl2: 0x00000000
[ 1166.922393] C1 [ mmcqd/0] sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xae3fd008
[ 1166.922424] C1 [ mmcqd/0] sdhci: ===========================================
[ 1166.931915] C1 [ mmcqd/0] mmcblk0: error -5 sending status command, retrying
[ 1166.931976] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, retrying
[ 1166.932067] C1 [ mmcqd/0] mmcblk0: error -110 sending status command, aborting

Any help or did CM13 just fried my phone memory?