Hi,
I have two Nook Color tablets that are running CM11 on SD. The SanDisk microSDs are 16GB each.
I have a constant problem that the space for Apps runs out. So I can't update apps or download any new. The only thing these NCs are used for are Apps. & web browsing. So I don't need alot of space for other tings like saving videos, music & files.
Is is possible to increase the size for the "volume" where the apps are saved?
Thanks in advance.
frav.se said:
Hi,
I have two Nook Color tablets that are running CM11 on SD. The SanDisk microSDs are 16GB each.
I have a constant problem that the space for Apps runs out. So I can't update apps or download any new. The only thing these NCs are used for are Apps. & web browsing. So I don't need alot of space for other tings like saving videos, music & files.
Is is possible to increase the size for the "volume" where the apps are saved?
Thanks in advance.
Click to expand...
Click to collapse
You must be running some very large apps because the space is already generous. But yes, you can use partitioning software to change the allocation. But you need to start over fresh. Make the SD and boot once before adding the CM rom zip. Use partitioning software like MiniTool and decrease the size of partition 4 (from the front of the partition), then expand partition 3 to fill the space. That gives you less for media and more for apps. Then install the CM zip and gapps.
Sent from my BN NookHD+ using XDA Premium HD app
Thank you for your information. I have now re-imaged (v1.3-largest-rev8c) the two 16GB SD-Cards with Win32diskimager, that i have for my two Nook Colors, installed "MiniTool Partition Wizard 9.0" & decreased the size of partition 4 [SDCARD(FAT32)] to 8.0GB. "Apply" on that & then start Resize partition 3 (Ext4) . But I can´t resize that one to use the unallocated space. Isen't it possible to resize an Ext4 partition?
Anyhow, My solution was to delete the third partition. Create a new Primary Ext4 partition. I diden't choose any Cluster size (1/2/4KB) more that let it be as "Default". This way I now have a 5.6GB third partition (for apps), instead of the default that had 1.9GB . I hope this helps me with my out of space problems. Installation of latest Nightly is running.
Unfortunately it looks like it diden't was successfull. The Cyanoboot only loops around now. It says "Loading..." then it gets black & after a while it start over again.
I suppose that the third partition wasen't empty. That't why it dosen't work for me.
Is it possible to re init that partition with data like the first run did? Or do we have another suggestion of partitioning program that can expand an existing Ext4 partition, in Windows, on a SD-Card?
I have now tried with "Paragon Partition Manager". Then it was possible to resize. But still the same problem with loop at boot after installing CM11.
Are there any limit of how large the third partition can be?
Hmmm... Now I have redone everything again, without any modifications to the partitions. But still the same problem, Cyanoboot just loops. Do we have a problem with the nightly? cm-11-20150405-NIGHTLY-encore.zip
The reason I told you to start over is an ext4 partition must be empty to be resized. And if you don't start really fresh your data will still be there. And by fresh I mean taking the card back to a full 16Gb and formatting it with a program like SDFormatter. Then you can reimage. And yes, you must not use new nightly on a new SD. You must start with CM11 CM11 or older. See my warning in the SD thread.
Sent from my SCH-i705 using XDA Premium HD app
Okay, so... is this a step by step procedure that would work?
SD Formatter to fully format the SD-card
Win32diskimager with "v1.3-largest-rev8c"
Boot once so partitions are created
Decrease the size of partition 4 (from the front of the partition), then expand partition 3 to fill the space
Add the CM zip and gapps to SD-Card
Install the CM zip and gapps
Then I have done a new try, based on below steps,
SD Card Formatter V4.0 , Full(OverWrite) Took almost an hour for 16GB
https://www.sdcard.org/downloads/formatter_4/index.html
Used "Win32DiskImager 0.9.5" to write "generic-sdcard-v1.3-CM7-9-10-10.1-10.2-11-largest-Rev8c.img"
SD-Card mounted in NookColor, start it up to create partitions & filesystem.
SD-Card back into PC,
Resize partitions 3 & 4 with "Paragon Partition Manager™ 14 Free"
Insert SD-Card in NookColor & start, to make sure it still boots.
SD-Card back into PC,
Copy...
cm-11-20141008-SNAPSHOT-M11-encore.zip
gapps-kk-20140105-signed.zip
... to SD-Card
Insert SD-Card back into NookColor & start it up, installation started to run.
After that the installation is finnished & that the NC it powered off. Power it up again & the CM11 will boot!
Success!
After first boot & configuration. I will update to latest Nightly, cm-11-20150405-NIGHTLY-encore.zip
Thank you for all help!
frav.se said:
After first boot & configuration. I will update to latest Nightly, cm-11-20150405-NIGHTLY-encore.zip
Click to expand...
Click to collapse
When you install the nightly (or any zip after M11), you will get an error message during install but you can ignore it. It only causes a problem during the FIRST install to the card. That's why you need to begin with M11.
Related
Hi, I recently installed NAND android build and I'm facing similar problem which I had on SD (this happened to me just 1 out of 3 sd builds). When I want to change my wallpaper (stock walls), I get only few thumbnails and I'm able to set wall only from those which get one. When clicking on those without thumbnails, phone says that my storage is full, although it's a clean and fresh install. Does anybody know what to do about it? Thanks
what build did you install?
NAND is HD2 CoreDroid Desire HD GB V2...and before I used SD MccM 4.5
Danibor said:
Hi, I recently installed NAND android build and I'm facing similar problem which I had on SD (this happened to me just 1 out of 3 sd builds). When I want to change my wallpaper (stock walls), I get only few thumbnails and I'm able to set wall only from those which get one. When clicking on those without thumbnails, phone says that my storage is full, although it's a clean and fresh install. Does anybody know what to do about it? Thanks
Click to expand...
Click to collapse
okay..there has something about the recovery.
different size of ROM use different setting of recovery.
you may decompress the recovery.
for example. Recovery_120M_v3.0.2.4.rar
using TXT to run the (flash.cfg)
comes us:
misc ya 1M
recovery rrecov|ro|nospr filesize recovery-raw.img
boot yboot|ro 5M
system ya 120M
cache ya 10M
userdata ya|asize|hr allsize
not very sure it is exactly same to me.
it say that your storage is full, because of your recovery setting.
assume your ROM is 120MB. but your recovery setting is 400MB. your system is using the space more itself. too much space free from the 400.
same like PC. your disk C is using 390GB from 400GB of your whole disk.
main setting is "system ya 120M"
try to make it small by the size of your ROM.
------------------------------------------------------------------------
if u have reduce the space of system. but still storage full.
try to cut up your sd card to help you phone storage.
cut one GB , and format it as ext2 or ext3 to help your phone.
you know android is running under linux system. and ext2 or ext3 is identified by linux.
so..hope it helps.
I formated my SD in FAT32. Ext 3 was then done in CWM (they say it should be like that) and I used 1024/0 ext 3 partition as they instructed in their guide. Probably just some little mistake during the install process. If there's time tomorrow, I'll try to reinstall it and see what happens.
Danibor said:
I formated my SD in FAT32. Ext 3 was then done in CWM (they say it should be like that) and I used 1024/0 ext 3 partition as they instructed in their guide. Probably just some little mistake during the install process. If there's time tomorrow, I'll try to reinstall it and see what happens.
Click to expand...
Click to collapse
all right
good luck~
Hi,
First off if this is answered I am sorry.
I did a lot of searching and was unable to see the answer to this...
I am running CM7.1 off uSD. Install went well, and have no issues. That being said, I am unable to find out where on the card to sideload books. I have booted into CM7.1, turned on USB storage, and have 2 drives appear in win: MYNOOK and CM7 SDCARD. I used the size agnostic image, and it appears that there is only the single partition on the card, and in file explorer, it shows the correct card size for memory, but only the single partition.
The only folders appearing on the card are:
.android_secure
Android
LOST.DIR
I tried to manually copy the books, media, etc. folders into a My Files folder on this drive, without success.
There is no other partition to repartition (shouldn't have to do that with size agnostic?). I have no problem loading books into the MYNOOK book folder, which I assume is the internal device memory.
Here is my question. How/where do I sideload books to use the storage on the uSD card? Do I have to create the folders somewhere? If so where?
My goal is to utilize the storage available on the card, but be able to read the titles in the stock software. Is it possible to do this without rooting, or do I need to root for any reason to access the right folders on the card for storage?
THANK YOU ALL!!
klewlessnoob said:
I tried to manually copy the books, media, etc. folders into a My Files folder on this drive, without success.
Click to expand...
Click to collapse
In what way was it not successful? Did the files copy and just can't find them with a reader? If so which reader?
The book I transferred over was not found in the stock software when I opened my library. Is there somewhere specific I am supposed to place it on the card for the Nook to see it? Thanks!
For the stock reader, I think you must use the 1gb area of the internal memory drive, which shows up as a separate drive on your PC when you plug it into the computer. When you are in CM7 and connect to the pc, cancel when it tries to install a device for the NC. Check the notifications on the NC, you need to click a button to enable copying files from your pc, and take care to properly safely remove/eject before disabling that and disconnecting the cable from your pc. Better to get a separate reader and install it from the market (e.g., Cool Reader). You can also install the Nook app from the market, but then books need to go within (possibly in a specific subdir) of the "Nook" folder on SDCARD.
So there is no way to use the card memory to store books if I want to use the stock reader??
Should there have been a "NOOK" folder created on the SD card as part of the CM7 process? Is that a file that the user needs to create? If so, does it go in the same partition as the CM7, as that is the only partition my machine is able to see?
thanks again
Hopefully you'll get more input on this, but I think the point of keeping the Nook stock available (aside from not voiding your warranty) relates to use of B&N books. However you can eject your CM sd card and use another sd card if you want more space for user media for use with the stock app. I thought the media drive was the 1gb area, but now I'm not so sure because on mine the MYNOOK disk is much smaller.
When you are in the stock firmware... you are seeing the boot partition of the uSD...
You can write the boot partition... resize it... then run the installer...
I have done it in the past... set up a 2GB boot partition... then setup the ROM on uSD. You then have a 2GB partition you can use when in stock.
Thanks for the info. I am a bit confused by your suggestion, can you please offer a bit more?
By writing the boot partition, then resizing it, does that mean I can resize now, after I have already set everything up? If so, what do you mean by the installer? Or do you mean I have to wipe the card and start over? If that is the case (start over) do you mean wipe the card, create a small partition for the boot to install on? Would that requre the use of an image that is not size agnostic?
Either way, how do I get the file structure in place on the non boot partition for the nook to see files that are saved there?
Thanks again for any help you can provide!
I have never had luck resizing it after it has been booted in the Nook and all the partitions created...
I have written the size agnostic image to the card... resized the only partition created at that point... then put the ROM on it and booted it in the nook so the installer script (size agnostic recovery) can do the partitioning and install the ROM.
For the question of getting the file structure... I'd have to ask how you wrote the files on the uSD... were you CM or stock?
I had always planned on running cm from the card, so when I wrote the files to the card, I was stock.
If I follow what you are saying, then steps for me to try at this point would be:
1. Reformat card
2. Write the disk image to the card
3. Shrink the single partition on the card (where the image is)
4. Add the CM ROM to same partition as the image
5. Install card and boot device
If this sounds right, I have 2 questions.
What size should the partition be for the image and CM ROM, maybe 2GB?
Will the Nook "see" the non-CM partition and create the file structure for saving files on the 2nd partition at some point? In my searches I saw that in early versions, there was a requirement that the 4th partition on the card be expanded to use for storage, won't I only have 2 at this point?
Thanks again so much for the help!
When you write the image to the card... it will only be about 114 MB.... you will probably want to increase the size to avoid any possible size issues later (with ROM's getting larger)
If you plan to use the stock nook ROM as well as CM7... you will probably want 2 GB boot partition... otherwise if you plan to only run CM7 you probably only want about 250 MB.
You can modify vold.fstab on the stock ROM to use partition 4 of the SD for its SD use... then you could avoid the 2 GB boot partition.
What happens when you use VG's SASD... the boot image is about 114 MB... when you boot it in the nook it creates partitions 2, 3 and 4... 2 and 3 are ext3 partitions, partition 4 is fat... partition 4 is the one set for sdcard in the ROM booted from SD...
This is why you can modify stock vold.fstab to point to partition 4... then both ROM's will be putting stuff on the same partition for "SD Card"
I think I follow that, but my issue is that currently I am unable to see partition 2,3 or 4 which I think is part of my problem.
When I set up the card, I used the SASD method, and all I can see in both win explorer and partition software is the single partition on the card. Should there also be partitions 2,3, and 4? Do I have to do something to make those partitions viewable?
I am not comfortable enough with my skill level to attempt to modify the stock vold.fstab file on the device, and was hopeful that by properly setting up the card, I would be able to keep stock as is, and use the card to multipurpose, ie run cm7 on part and use the remaining space on card to store books to be read in stock firmware. I am still hoping to do that....thanks
As far as only seeing partition 1.... that is a limitation of Windows.
By following the advice pertaining to starting over and increasing the size of the Boot partition immediately after writing the image... before doing anything else... you can provide more space for the stock ROM to use on the SD... it will use partiton 1 (the boot partition) without the other modifications to vold.fstab
ok, confused again
If I start over, write image, then resize that partition with the image, am I going to use the "rest" of the card, NOT in that partition to use with storage? OR am I going to resize the partition with the image to be big enough to use as the partition to put books on?
If it is the former, don't I again run into the problem of how to find the other partitions, or will I create them when resize the first partition after writing the image?
Thank you!
You will only ever see the first partition of the sd card when booting from the stock OS. Also with the card inserted in a usb flash card reader on Windows you can only mount the first partition as a drive letter. But you can see and resize partitions with contiguous unallocated space using MiniTools Partition Wizard.
OK thats good to know. Do you know if the SASD install should have created other partitions when I installed to the card? The reason I ask is that even in Partition Wizard, I am still only able to see the 1 large partition with everything in it.
If I start over again, will I need to use the wizard to create partitions first, then write the image to the resized 2 GB first partition, or should I write image to card, resize the first partition? If the latter, will resizing the first partition autmatically force the other partitions to be seen? I am not sure of this option, as I can't see where in the process the other partitions are created? Is this part of the process when CM7 boots?
Thanks!
Write the image. Safely remove from pc. Reinsert to pc. Use minitool partition to resize the (only, at that point) partition to the size you want. Use Apply in minitool software. Quit minitool and resume with the card setup.
does the minitool at that point (resizing) create the other partitions, or will the card setup do that? Do I have to do anything else to the other partitions to make them visable to the stock nook so that they can be used to access books while in stock os?
The card setup will create the other partitions. The stock os is never going to see anything but the 1st partition. You would need a terminal emulator or rooted file explorer installed in the stock os in order to mount another partition.
If that is the case, that stock os will never see anything other than the 1st partition, then there really is no way to accomplish what I am trying to do, correct?
In other words, put CM7 on the card, then when I want to use stock, boot into stock and have the reader find books saved on the card?
Hi. Did my usual +3 hours googling but came empty handed.
Could size-agnostic CM7 SD installer script be modified so that /Data partition is set to 2Gb instead of 1Gb? I know that I can always do the "move to SD" routine but Android keeps bugging me that I`m out of space even when I have 170Mb free on /data. And also moving apps back and forth from internal to SD somehow wrecked my system process. As a result I now have constant rebooting of the launcher as my only Android experience. Uninstalling recent apps did not work. Neither did freeing up space on SD and denying root to all apps that previously asked for it.
zuzka said:
Hi. Did my usual +3 hours googling but came empty handed.
Could size-agnostic CM7 SD installer script be modified so that /Data partition is set to 2Gb instead of 1Gb? I know that I can always do the "move to SD" routine but Android keeps bugging me that I`m out of space even when I have 170Mb free on /data. And also moving apps back and forth from internal to SD somehow wrecked my system process. As a result I now have constant rebooting of the launcher as my only Android experience. Uninstalling recent apps did not work. Neither did freeing up space on SD and denying root to all apps that previously asked for it.
Click to expand...
Click to collapse
If you are willing to start from scratch you can burn the image again to the SD, but don't put any zips in it. Boot and let the script create the new partitions. Then put the card back in the PC and use Mini-Tool Partition Manager to shrink partition 4 (sdcard) and grow partition 3 (data) That program will handle the ext partition (3) as long as there is no data written to it yet. You can get that program free on the internet. Do a Titianium backup of your apps and data and restore later.
Edit: Now after thinking about it, you may be able to doctor your existing card. Partition 4 is fat so you can shrink it with data in it. Take the space off the front. Then I think the program will let you grow partition 3 into the empty space even with data already in it. It is just trying to move it with data does the program balk. Windows does not know how to read ext. Of course if you are running linux, just use gparted to do everything.
Yes, you could do that or you could use a program like easeus partition manager and move the partitions around after the first boot of the card.
Edit (while typing): It looks like you might be talking about an internal installation in which case you don't need to use size agnostic SD installer. Just repartition the internal the way you want it (there are threads for this) then flash your CM7.
Edit 2: beat out by leapinlar while editing 1
JP
Thanks for the idea of repartitioning prior to installing CM7. I`ll also try to repartition SD the way it is now- with data. I was concerned that /data partition is unmountable under Ubuntu when /boot and /system can be read without problems.
Hi again. I`ve managed to srink /sdcard partition under Windows and sort of grow /data partition under Ubuntu LiveCD (gparted froze right after doing its magic).
Boot loop on my Nook stopped as free space on /data increased from 175Mb to 1.2Gb. So I guess I wont be doing a fresh install at the moment.
Question is, exactly how much free space does CM7 need on /data partition? In a real world?
(at ~200Mb it starts bugging me about free space but overall Android stays stable)
zuzka said:
Question is, exactly how much free space does CM7 need on /data partition? In a real world?
(at ~200Mb it starts bugging me about free space but overall Android stays stable)
Click to expand...
Click to collapse
Original Nook Color had 1GB for data. B&N upped it to 5GB on the new Nook Colors. I personally would make it 2GB unless you are going to be adding some really big apps.
Sent from my Nook Color running ICS and Tapatalk
Though I'm fairly techy, I'm a complete newbie when it comes to rooting.
Last night, I bought a Sandisk 8g card from Radio Shack. It came with an adaptor and cost about $7. I'm not sure of the class.
I had to follow bits and pieces from various threads because most were either outdated or left out important info.
Anyhow, I popped the adaptor in my HP laptop and wrote the card image to disk. Then I downloaded the latest CM10 nightly from 12/22 and I had to use an older gapps file because the latest one made the keyboard disappear.
So far things are working well except I'm already running out of space.
What am I missing?
affirmwealth said:
Though I'm fairly techy, I'm a complete newbie when it comes to rooting.
Last night, I bought a Sandisk 8g card from Radio Shack. It came with an adaptor and cost about $7. I'm not sure of the class.
I had to follow bits and pieces from various threads because most were either outdated or left out important info.
Anyhow, I popped the adaptor in my HP laptop and wrote the card image to disk. Then I downloaded the latest CM10 nightly from 12/22 and I had to use an older gapps file because the latest one made the keyboard disappear.
So far things are working well except I'm already running out of space.
What am I missing?
Click to expand...
Click to collapse
Boot into recovery by holding the n button while powering up. Choose recovery from the menu. When the recovery menu comes up choose format SD card. Process should fix remaining space on the SD card so apps can use it. Reboot when done.
I tried what you suggested, but when it boots into recovery, it runs a few commands and then just shuts down.
It never gave me an option to format.
I tried it again and it still didn't work, but this time I looked at the commands closely when it was rebooting in recovery mode and it said something about "your sd card appears to be formatted correctly".
So maybe that's why it didn't ask.
I was going to try to follow some instructions I found online about partitioning using Mini-Tool Partition Wizard but the instructions kind of fell flat because I couldn't understand them well enough to follow them.
I did see the Fat32 partition, which is the 4th partition, and it is 5.8 GB, but 0 used.
There are actually two Fat32 partitions...the other one is the 1st partition, and it is 204 mb, all used. That is where everything is and why my phone thinks I'm out of space but I don't know how to fix it.
Any ideas?
affirmwealth said:
I tried it again and it still didn't work, but this time I looked at the commands closely when it was rebooting in recovery mode and it said something about "your sd card appears to be formatted correctly".
So maybe that's why it didn't ask.
I was going to try to follow some instructions I found online about partitioning using Mini-Tool Partition Wizard but the instructions kind of fell flat because I couldn't understand them well enough to follow them.
I did see the Fat32 partition, which is the 4th partition, and it is 5.8 GB, but 0 used.
There are actually two Fat32 partitions...the other one is the 1st partition, and it is 204 mb, all used. That is where everything is and why my phone thinks I'm out of space but I don't know how to fix it.
Any ideas?
Click to expand...
Click to collapse
in CWM recovery you did not see/select Advanced at the bottom of the first menu and Partition SD card in the second menu? Usually that fixes the fat32 partition for access.
In the CyanoBoot Universal Bootloader, the menu options are:
Internal eMMC Normal
Internal eMMC Recovery
Internal eMMC Alternate
SD Card Normal
SD Card Recovery
SD Card Alternate
When I select SD Card Recovery it says,
"Loading from SD Recovery"...
Then it goes into some Linux commands
Then it goes black.
The end.
Anyhow, I figured out how to expand the space in the first Fat32 partition using the Mini-Tool software...the only thing that bothers me is that all the instructions keep talking about the last partition but on mine the last partition is the second Fat32 section that has the 5.8Gb of space and you can't adjust it.
But I can adjust the first Fat32 partition and extend it out so that it takes up almost all of the 5.8gb.
affirmwealth said:
In the CyanoBoot Universal Bootloader, the menu options are:
Internal eMMC Normal
Internal eMMC Recovery
Internal eMMC Alternate
SD Card Normal
SD Card Recovery
SD Card Alternate
When I select SD Card Recovery it says,
"Loading from SD Recovery"...
Then it goes into some Linux commands
Then it goes black.
The end.
Anyhow, I figured out how to expand the space in the first Fat32 partition using the Mini-Tool software...the only thing that bothers me is that all the instructions keep talking about the last partition but on mine the last partition is the second Fat32 section that has the 5.8Gb of space and you can't adjust it.
But I can adjust the first Fat32 partition and extend it out so that it takes up almost all of the 5.8gb.
Click to expand...
Click to collapse
You are not on a dual boot SD, you are on a single boot SD. It has the partitions set up so one rom can run there. Go to my tips thread linked in my signature and look at section B. You will learn a lot about the card.
Sent from my HD+ rooted stock using Tapatalk
Using the Mini-Tool software to expand the first Fat32 partition to use up some of the unused space in the last partition was the answer.
I could have expanded it to take up almost all of the 5.8GB, but I left half of the space intact because I wasn't sure if it was needed for something or not.
I then clicked "Apply" and waited for it to process (reformat?) the sd card.
Then I also went ahead and updated to the next CM10 nightly while I was at it since the sd card was already open on my laptop.
After that I popped it back in to my Nook, booted in recovery mode, it went ahead and installed the newest nightly, and I'm off to the races.
Thanks for your help.
affirmwealth said:
Using the Mini-Tool software to expand the first Fat32 partition to use up some of the unused space in the last partition was the answer.
I could have expanded it to take up almost all of the 5.8GB, but I left half of the space intact because I wasn't sure if it was needed for something or not.
I then clicked "Apply" and waited for it to process (reformat?) the sd card.
Then I also went ahead and updated to the next CM10 nightly while I was at it since the sd card was already open on my laptop.
After that I popped it back in to my Nook, booted in recovery mode, it went ahead and installed the newest nightly, and I'm off to the races.
Thanks for your help.
Click to expand...
Click to collapse
When you burned the SD image, did you use the rev 5 image from my updated installation instructions thread also linked in my signature? You need to because CM10 will display the wrong partition as sdcard (partition one instead of 4) if you use an older image. That may be why you were complaining about running out of space.
Sent from my Nook HD+ Running CM10 on SD
Hi guys,
First I want to thank you all, I get my HD2 few days ago with a so old and boring windows 6.5, and i had a lot of fun upgrading it to Android.
I successfully installed the CM9 nexus rom with the nativeSD option (http://forum.xda-developers.com/showthread.php?t=1437463), i'm very impressed by the smoothness of the rom.
I have a small issue with space available for apps, i only have 914Mo of "internal space", 815Mo are aleady used (i guess for the system), meaning i only have 99Mo remaining to install my apps. As i use a lot of them, even if i move most of them to SD card, it is a too small space left.
Do you know how i can increase my "internal space", as i use a 16Go SD i have no problem re-partitioning my sd card, i just don't unsderstand how to do it (with MAGLDR? with CWM? manually with my parition manager?).
thanks a lot in advance for your anwers,
cimourdain said:
I have a small issue with space available for apps, i only have 914Mo of "internal space", 815Mo are aleady used (i guess for the system),
Click to expand...
Click to collapse
800+Mb?? that's HUGE that's not the system! system files take up usually 150 - 350mb depending on eth rom you flashed, nowhere near 800+
anyway, just backup your rom through recovery, and then use a partition manager via the pc, or the one in recovery, to make a bigger ext partition, say 2gb, and then restore your rom through recovery.
Yes 800MB is indeed a lot. IF you go to Settings->Storage which numbers do you see by Internal Storage?
If you backup your system, how big is the backup ZIP?
You can go through your file system with a tool like Root Explorer (paid) to find out where the big data of your system is. You have about 500MB too much.
Use MiniTool Partition Wizard Home Edition to partition your SD card. Make an EXT4 of about 2GB en default cluster size. The remaining part should be FAT32, 32k cluster size.
Thank you to both of you,
You were perfectly right about the fact that 800Mo+ is way to big. I opened my Ext4 partition with my Ubuntu, and "surprise", i found 2 folder remaining from previous (and failed) attempts of installing MIUI roms. After manually deleting those two, my internal storage went back to normal.
Thank you again for your help.