[Barnes & Noble Nook Tablet] Domiel:
So In 2012 I flashed a MIUI ROM and re-partitioned my 16 gb nook tablet as follows:

Number Start End Size File system Name Flags
1 131kB 262kB 131kB xloader
2 262kB 524kB 262kB bootloader
3 524kB 16.3MB 15.7MB recovery
4 16.8MB 33.6MB 16.8MB boot
5 33.6MB 83.9MB 50.3MB fat32 rom
6 83.9MB 134MB 50.3MB fat32 bootdata
7 134MB 522MB 388MB ext4 factory
8 522MB 1164MB 642MB ext4 system
9 1164MB 1611MB 447MB ext4 cache
10 1611MB 11.6GB 9989MB fat32 media msftres
11 11.6GB 15.6GB 4034MB ext4 userdata

Come 2016 I've installed CM 13 and wanted to install Gapps aswell but get an error msg that there is not sufficient space on my system partition, here is the log:

# Begin Open GApps Install Log
------------------------------------------------------------------
ROM Android version | 6.0.1
ROM Build ID | cm_acclaim-userdebug 6.0.1 MOB30Z 7c153c46c0 test-keys
ROM Version increment | 7c153c46c0
ROM SDK version | 23
ROM/Recovery modversion | 13.0-20160819-SNAPSHOT-ZNH5YAO0IN-acclaim
Device Recovery | TWRP 2.8.5.2
Device Name | acclaim
Device Model | Barnes & Noble Nook Tablet
Device Type | tablet
Device CPU | armeabi-v7a,armeabi
Installer Platform | arm
ROM Platform | arm
Display Density Used | 160
Install Type | Dirty[Data NOT Wiped]
Smart ART Pre-ODEX | false
Google Camera already installed | false
FaceUnlock Compatible | false
Google Camera Compatible | true
New Camera API Compatible | false
Current GApps Version | No GApps Installed
Google Camera version | Legacy
Installing GApps Zipfile | /external_sd/open_gapps-arm-6.0-nano-20161018.zip
Installing GApps Version | 20161018
Installing GApps Type | nano
Config Type |
Using gapps-config | Not Used
Remove Stock/AOSP Browser | false[NO_Chrome]
Remove Stock/AOSP Camera | false[NO_CameraGoogle]
Remove Stock/AOSP Email | false[NO_Gmail]
Remove Stock/AOSP Gallery | false[NO_Photos]
Remove Stock/AOSP Launcher | false[NO_GoogleNow]
Remove Stock/AOSP MMS App | false[NO_Hangouts]
Remove Stock/AOSP Pico TTS | false[default]
Ignore Google Contacts | false
Ignore Google Dialer | true[NoRemove]
Ignore Google Keyboard | false
Ignore Google Package Installer | false
Ignore Google NFC Tag | true[NoRemove]
Ignore Google WebView | false
Total System Size (KB) | 616824
Used System Space (KB) | 455992
Current Free Space (KB) | 160832
Additional Space Required (KB) | 76364 << See Calculations Below
------------------------------------------------------------------
# End Open GApps Install Log

INSTALLATION FAILURE: Your device does not have sufficient space available in
the system partition to install this GApps package as currently configured.
You will need to switch to a smaller GApps package or use gapps-config to
reduce the installed size.

NOTE: FaceUnlock can only be installed on devices with a front facing camera.

WARNING: PackageInstallerGoogle is not installed. Cyanogenmod is NOT
compatible with some Google Applications and Open GApps
will skip their installation.

# Begin GApps Size Calculations
------------------------------------------------------------------
TYPE | DESCRIPTION | SIZE | TOTAL
| Current Free Space | 160832 | 160832
Remove | Existing GApps | + 0 | 160832
Remove | Obsolete Files | + 24 | 160856
Remove | extservicesstock | + 0 | 160856
Remove | extsharedstock | + 0 | 160856
Remove | provision | + 8 | 160864
Install | Core | - 111004 | 49860
Install | calsync | - 1808 | 48052
Install | facedetect | - 540 | 47512
Install | googletts | - 26704 | 20808
Install | hotword | - 564 | 20244
Install | search | - 47788 | -27544
Install | speech | - 39604 | -67148
| Buffer Space | - 9216 | -76364
------------------------------------------------------------------
Additional Space Required | 76364
------------------------------------------------------------------

# End GApps Size Calculations

# Begin User's gapps-config

# End User's gapps-config

While I could try another smaller Gapps package I don't think that should be necessary. The problem must be elsewhere.

I'm also having another major problem that I can't see the 10GB media partition (partition 10, media)I resized in 2012. All I get when I connect my nook to a pc or open the CM 13 file-browser is a partition called "internal storage" along with my sd card. I'm guessing its partition 11 called userdata. How can I mount my partition 10 "media" partition aswel?

I also found a recovery.log(attached) on the "internal storage" partition that refers to my elusive 10GB partition, relevant part:

/emmc_unused | /dev/block/mmcblk0p10 | Size: 9508MB Used: 6917MB Free: 2590MB Backup Size: 6917MB
Flags: Can_Be_Mounted Can_Be_Wiped Wipe_Available_in_GUI IsPresent Is_Storage
Primary_Block_Device: /dev/block/mmcblk0p10
Display_Name: Internal Storage
Storage_Name: Internal Storage
Backup_Path: /emmc_unused
Backup_Name: emmc_unused
Backup_Display_Name: Internal Storage
Storage_Path: /emmc_unused
Current_File_System: vfat
Fstab_File_System: vfat
Backup_Method: files
MTP_Storage_ID: 65537

I have found the emmc_unused in the file browser of the twrp-2.8.5.2 recovery tool, but that is the only place where i can access my partition.

TLDR:

1.How do I make Gapps install on my system partition?

Should I

-resize the partition

-get a smaller Gapps,

-format the system partition?

2. How do I mount my media partition and make it visible to:

-64bit windows 10?

- my NT16GB?