[Galaxy Grand Duos i9082 General] amtra:
Is it an Error??

I have done every thing given in OP and got the below result...

C:\Users\Amreen>adb shell
~ # cd /dev/block
cd /dev/block
/dev/block # parted mmcblk0
parted mmcblk0
GNU Parted 1.8.8.1.179-aef3
Using /dev/block/mmcblk0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
print
print
Model: MMC M8G1WA (sd/mmc)
Disk /dev/block/mmcblk0: 7818MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 14.7MB 15.7MB 1049kB cal
2 15.7MB 16.0MB 262kB sysparm_dep
3 16.0MB 16.3MB 262kB parm-spml_dep
4 16.3MB 16.5MB 262kB RF_CAL_FILE
5 16.5MB 24.9MB 8389kB KERNEL
6 24.9MB 33.3MB 8389kB RECOVERY
7 33.3MB 53.0MB 19.7MB modem
8 53.0MB 86.2MB 33.3MB reserved
9 86.2MB 88.3MB 2097kB SBL1
10 88.3MB 90.4MB 2097kB SBL2
11 90.4MB 98.8MB 8389kB PARAM
12 98.8MB 99.4MB 524kB DTSBK
13 99.4MB 99.9MB 524kB DTS
14 99.9MB 108MB 8389kB VC-FirmwareBK
15 108MB 117MB 8389kB VC-Firmware
16 117MB 117MB 262kB FOTA_SIG
17 117MB 138MB 21.0MB ext4 efs
18 138MB 1212MB 1074MB ext4 CSC
19 1212MB 2822MB 1611MB ext4 system
20 2822MB 3409MB 587MB ext4 HIDDEN
21 3409MB 7813MB 4404MB ext4 userdata

(parted) rm 21
rm 21
rm 21
(parted) rm 20
rm 20
rm 20
(parted) rm 19
rm 19
rm 19
(parted) rm 18
rm 18
rm 18
(parted) mkpartfs primary ext2 138 538
mkpartfs primary ext2 138 538
mkpartfs primary ext2 138 538
(parted) mkpartfs primary ext2 538 1638
mkpartfs primary ext2 538 1638
mkpartfs primary ext2 538 1638
(parted) mkpartfs primary ext2 1638 1838
mkpartfs primary ext2 1638 1838
mkpartfs primary ext2 1638 1838
(parted) mkpartfs primary ext2 1838 7813
mkpartfs primary ext2 1838 7813
mkpartfs primary ext2 1838 7813
(parted) quit
quit
quit
Information: You may need to update /etc/fstab.

/dev/block #
C:\Users\Amreen>adb shell
~ # mke2fs /dev/block/mmcblk0p18
mke2fs /dev/block/mmcblk0p18
mke2fs 1.41.14 (22-Dec-2010)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=0 blocks, Stripe width=0 blocks
97920 inodes, 390732 blocks
19536 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67633152
48 block groups
8192 blocks per group, 8192 fragments per group
2040 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185

Writing inode tables: done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 25 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
~ # tune2fs -j /dev/block/mmcblk0p18
tune2fs -j /dev/block/mmcblk0p18
tune2fs 1.41.14 (22-Dec-2010)
Creating journal inode: done
This filesystem will be automatically checked every 25 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
~ # mke2fs /dev/block/mmcblk0p19
mke2fs /dev/block/mmcblk0p19
mke2fs 1.41.14 (22-Dec-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
67248 inodes, 268554 blocks
13427 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=276824064
9 block groups
32768 blocks per group, 32768 fragments per group
7472 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376

Writing inode tables: done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 32 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
~ # tune2fs -j /dev/block/mmcblk0p19
tune2fs -j /dev/block/mmcblk0p19
tune2fs 1.41.14 (22-Dec-2010)
Creating journal inode: done
This filesystem will be automatically checked every 32 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
~ # mke2fs /dev/block/mmcblk0p20
mke2fs /dev/block/mmcblk0p20
mke2fs 1.41.14 (22-Dec-2010)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
Stride=0 blocks, Stripe width=0 blocks
48960 inodes, 195312 blocks
9765 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67371008
24 block groups
8192 blocks per group, 8192 fragments per group
2040 inodes per group
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729

Writing inode tables: done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
~ # tune2fs -j /dev/block/mmcblk0p20
tune2fs -j /dev/block/mmcblk0p20
tune2fs 1.41.14 (22-Dec-2010)
Creating journal inode: done
This filesystem will be automatically checked every 22 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
~ # mke2fs /dev/block/mmcblk0p21
mke2fs /dev/block/mmcblk0p21
mke2fs 1.41.14 (22-Dec-2010)
/dev/block/mmcblk0p21 is apparently in use by the system; will not make a filesy
stem here!
~ # tune2fs -j /dev/block/mmcblk0p21
tune2fs -j /dev/block/mmcblk0p21
tune2fs 1.41.14 (22-Dec-2010)
Creating journal inode:
tune2fs: Device or resource busy
while trying to create journal file
~ # tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p18
tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p18
tune2fs 1.41.14 (22-Dec-2010)
~ # tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p19
tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p19
tune2fs 1.41.14 (22-Dec-2010)
~ # tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p20
tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p20
tune2fs 1.41.14 (22-Dec-2010)
~ # tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p21
tune2fs -O extents,uninit_bg,dir_index /dev/block/mmcblk0p21
tune2fs 1.41.14 (22-Dec-2010)
~ # cd /dev/block
cd /dev/block
/dev/block # parted mmcblk0
parted mmcblk0
GNU Parted 1.8.8.1.179-aef3
Using /dev/block/mmcblk0
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
print
print
Model: MMC M8G1WA (sd/mmc)
Disk /dev/block/mmcblk0: 7818MB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
1 14.7MB 15.7MB 1049kB cal
2 15.7MB 16.0MB 262kB sysparm_dep
3 16.0MB 16.3MB 262kB parm-spml_dep
4 16.3MB 16.5MB 262kB RF_CAL_FILE
5 16.5MB 24.9MB 8389kB KERNEL
6 24.9MB 33.3MB 8389kB RECOVERY
7 33.3MB 53.0MB 19.7MB modem
8 53.0MB 86.2MB 33.3MB reserved
9 86.2MB 88.3MB 2097kB SBL1
10 88.3MB 90.4MB 2097kB SBL2
11 90.4MB 98.8MB 8389kB PARAM
12 98.8MB 99.4MB 524kB DTSBK
13 99.4MB 99.9MB 524kB DTS
14 99.9MB 108MB 8389kB VC-FirmwareBK
15 108MB 117MB 8389kB VC-Firmware
16 117MB 117MB 262kB FOTA_SIG
17 117MB 138MB 21.0MB ext4 efs
18 138MB 538MB 400MB ext4
19 538MB 1638MB 1100MB ext4
20 1638MB 1838MB 200MB ext4
21 1838MB 7813MB 5975MB ext2

(parted)

i have got only 5.48GB storage and some error in partition 21.. and also the parted 21 is in ext2.. any ideas..

in btw i flashed cm12 latest (20141218) built by [MENTION=3117667]pawitp[/MENTION] after this partitioning