Database Users

What is Dalvik Cache?

What is it? Thanks

http://lmgtfy.com/?q=dalvik+cache

Ok, I searched and found it. But I'm running into a lil problem. I did the apps2sd thing on my 2gig sd card and now in settings, its showing 1gb for the sd card and 1gb total space for the internal storage(which isn't right because the phone doesn't come with that much storage, right?).
What am I doing wrong?

Even after searching on Google it seems that the purpose of Dalvik Cache is very convoluted. From what little I understand it's the location where application data stored by the OS... but I could be wrong.

Simple explanation:
When Android starts up, the DalvikVM looks thru all of your applications (.apk files) and frameworks, and builds a tree of dependencies. It uses this dependency tree to optimize the bytecode for every application and stores it in the Dalvik cache. The applications are then run using the optimized bytecode. This is why when you install a new ROM, sometimes it takes a very long time to boot for the first time. Any time an application (or framework library) changes, it's reoptimized and the cache is updated.

Cyanogen- Thanks! By the way, great job on the rom. I'm running it right now.
So can you tell me why people want to move it to their sd? (By doing the apps2sd, did I already do this?)
Thanks again.

legaleye2005 said:
Cyanogen- Thanks! By the way, great job on the rom. I'm running it right now.
So can you tell me why people want to move it to their sd? (By doing the apps2sd, did I already do this?)
Thanks again.
Click to expand...
Click to collapse
To save memory, of course. And you probably haven't moved your dalvik cache to your SD Card yet.

Ironic
alapapa said:
http://lmgtfy.com/?q=dalvik+cache
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Click to collapse
This post is the #2 link in that search... Just found that kind of ironic.

I'm sorry I came off as snide and dismissive -- i guess i was...
I really should have just posted this:
http://en.wikipedia.org/wiki/Dalvik_virtual_machine

If you want to know about the guts of whats going on with the "dalvik cache", try here:
http://android.git.kernel.org/?p=platform/dalvik.git;a=blob_plain;f=docs/dexopt.html;hb=HEAD

As for this thread it will be moved to GENERAL, since this has no bearing on developement of the G1

legaleye2005 said:
Ok, I searched and found it. But I'm running into a lil problem. I did the apps2sd thing on my 2gig sd card and now in settings, its showing 1gb for the sd card and 1gb total space for the internal storage(which isn't right because the phone doesn't come with that much storage, right?).
What am I doing wrong?
Click to expand...
Click to collapse
A2sd "tricks" your phone into thinking that the partition on your sdcard is part of the phones internal memory. Some time report the internal memory correctly others do not its a bug of sorts. Don't worry you did nothing wrong

ubernicholi said:
A2sd "tricks" your phone into thinking that the partition on your sdcard is part of the phones internal memory. Some time report the internal memory correctly others do not its a bug of sorts. Don't worry you did nothing wrong
Click to expand...
Click to collapse
I believe that is my issue with the new 8GB class 6 card and how my G1 is now slower than the Tandy 1000 I had, long ago. Performance at max CPU speed is now 60-75% SLOWER than when I had all apps on "internal storage" with 7MB free. My ext2 partition on the 8G card is around 830M. I purchased the "appstosd2" from the market, but I'm guessing the s-l-o-w performance is because I have NOT (yet) put the Dalvik-cache on the card's ext2 partition. After reading: http://android.git.kernel.org/?p=platform/dalvik.git;a=blob_plain;f=docs/dexopt.html;hb=HEAD
...it seems that's most likely the "slowness issue". Like launching an app where parts of it have to come from a different hard drive.
I'll try moving the Dalvik-cache to the sd with the apps, but since I only made an 830M ext2 partition, I'd like to view the SD card within Linux Live CD. Perhaps there I could "resize" it to 1200-1400M. Then again, I'd like to keep the apps that came with the device "Market, Browser, Maps etc" within the device's internal memory, while installing pHaT apps to the ext2 partition, such as iMAP weather, aFile, pacman (with flickering screen on 1.5 builds ö) and really large apps that many ppl UN-install and report "I need more space on my phone".
I'm not too new of a noob, however I am a "super noob" when it comes to Linux. I setup my laptop to dual boot Win XP or SUSE 10, yet I'm lost on the 2nd choice.
Long Live the "Code Warriors" !!

l_____l said:
I believe that is my issue with the new 8GB class 6 card and how my G1 is now slower than the Tandy 1000 I had, long ago. Performance at max CPU speed is now 60-75% SLOWER than when I had all apps on "internal storage" with 7MB free. My ext2 partition on the 8G card is around 830M. I purchased the "appstosd2" from the market, but I'm guessing the s-l-o-w performance is because I have NOT (yet) put the Dalvik-cache on the card's ext2 partition. After reading: http://android.git.kernel.org/?p=platform/dalvik.git;a=blob_plain;f=docs/dexopt.html;hb=HEAD
...it seems that's most likely the "slowness issue". Like launching an app where parts of it have to come from a different hard drive.
I'll try moving the Dalvik-cache to the sd with the apps, but since I only made an 830M ext2 partition, I'd like to view the SD card within Linux Live CD. Perhaps there I could "resize" it to 1200-1400M. Then again, I'd like to keep the apps that came with the device "Market, Browser, Maps etc" within the device's internal memory, while installing pHaT apps to the ext2 partition, such as iMAP weather, aFile, pacman (with flickering screen on 1.5 builds ö) and really large apps that many ppl UN-install and report "I need more space on my phone".
I'm not too new of a noob, however I am a "super noob" when it comes to Linux. I setup my laptop to dual boot Win XP or SUSE 10, yet I'm lost on the 2nd choice.
Long Live the "Code Warriors" !!
Click to expand...
Click to collapse
I've read that having too big Of an ext2 partition can actually have a negative impact. You really don't need more than 500mb unless you are running debian or ubuntu. Moving the cache would be a good idea, and may help the speed issue. B

ubernicholi said:
I've read that having too big Of an ext2 partition can actually have a negative impact. You really don't need more than 500mb unless you are running debian or ubuntu. Moving the cache would be a good idea, and may help the speed issue. B
Click to expand...
Click to collapse
Indeed, that's why I wanted to make the ext2 no more than a factor of 3. (256x3). The SanDisk "Ultra" product seems not to be true "class 6", but rather 4. That's why I went with Transcend. They also make a 16G class 6, but $90 instead of $20 for the 8G.
I did the Dalvik to SD, and the device seems a tad faster, but, I have an app that puts the cache to SD in the FAT32 partition (for users with root access) and that is probably an issue. I will UN-install that app, but it's tough to understand as the coder is French, and the GUI is kind of, well, "did it do what I thought in English?" The name of the app on the Market is: Move Cache for Root by Costa Mlkhael. Does seem to work, but with appstosd2, it is not needed and probably hampers the system as it tries to access cache. I sure uninstalling it will allow cache to the ext2, but I will be left with loads of folders on the FAT side with what was left over. (a nightmare to delete)....yes, phone is a lot faster now with dalvik on the sd's ext2 partition.

alapapa said:
http://lmgtfy.com/?q=dalvik+cache
Click to expand...
Click to collapse
...lol this is an infinitely recursive URL

alapapa said:
http://lmgtfy.com/?q=dalvik+cache
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Click to collapse
haha the first link takes me to this thread!

alapapa said:
http://lmgtfy.com/?q=dalvik+cache
Click to expand...
Click to collapse
This is now a cyclic link as google brings us back to here how funny is that!!!
ROTFLMAO!!!
damn someone already found that.
oh well, whatever, nevermind

metasage said:
Even after searching on Google it seems that the purpose of Dalvik Cache is very convoluted. From what little I understand it's the location where application data stored by the OS... but I could be wrong.
Click to expand...
Click to collapse
ohhh myyyy goshhhh LOL

alapapa said:
http://lmgtfy.com/?q=dalvik+cache
Click to expand...
Click to collapse
the awesome thing is that the first link on google is this thread!
damn i should have read the whole thread first. i thought i would be the special unique snowflake that would discover this first.

memory problem

I have my nook rooted through my memory card. When I check how much internal storage I have on it through the nook it shows only 900 mb. It shows the same when I have it hooked to my computer. I know its supposed to have 5 gigs. I havent downloaded anything so I dont know where all the 4 + gigs went. Can anyone help? Thanks.

Can anyone please help?

thegameksk said:
Can anyone please help?
Click to expand...
Click to collapse
Barnes & Noble repartitioned the newest Nook Colors. If you had done even a hint of research before starting yet another thread you would know that.....which is why no one answered you last night when you asked this question....C'mon man this isn't customer service, do a search before you post.

How bout I did research and everything that i've seen has said that 5 gigs should show not 900 mb. The nook has 8 gigs. 3 are used for the os/repair and 5 for downloading things.

Nope, you are wrong.
New models made in May or refurb units as of May are partitioned for 1 GB of space.
http://forum.xda-developers.com/showpost.php?p=13772065&postcount=4

http://forum.xda-developers.com/showthread.php?t=1083506
http://forum.xda-developers.com/showthread.php?t=1080445
http://forum.xda-developers.com/showthread.php?t=1077321

Thats bs. When I bought it I was told there were 5 gigs for storage of files from my computer. Lokks like im sending this back. Thanks. Sorry bout the tude before.

No worries...I didn't mean to jump on you either. Just gets frustrating seeing new posts with the same old questions. Makes it tough to stay on top of the most current stuff and gets a little frustrating.

YeA i had searched but everything that came back said 5 gigs. Based on my reading of the threads that were posted theres no way to reparation the nook?

thegameksk said:
YeA i had searched but everything that came back said 5 gigs. Based on my reading of the threads that were posted theres no way to reparation the nook?
Click to expand...
Click to collapse
It's being worked on by many, but as of yet has not been solved. Conventional methods have come up empty. I'm quite sure we're getting closer to a solution though.

I was doing some research and came across this:
Here's how to convert a new NC (or one where you don't care about anything in /data and /media that won't be automatically restored by B&N) with only a 1GB /media space, back to one with with 5GB media space:
Boot a rooted Android system in the external SD card slot:
Access the rooted OS command line prompt, using either ConnectBot or ADB.
Fire up "busybox fdisk /dev/block/mmcblk0"
Delete partition #8 (the /media partition).
Note the size of partition #7 (the cache partition), and delete it as well.
Delete partition #6 (the /data partition).
Recreate partition #6 (the /data partition), to the size you want (say 1GB).
Recreate partition #7 (the /cache partition), to the size noted in step #5.
Recreate partition #8 (the /media partition), to occupy the remainder of the space.
Remove the SDcard and reboot.
When the NC boots its native system, it will recreate (just like a factory reset), the contents of the resized partitions. Yes, you will have to reregister. Of course, the same process, but with a different number in step #7, can give you more app space.
This is easily scriptable as well, and I fully expect such scripts.
Do you think this could work? I dont know enough about modding to try it. lol

[Q] Multi-boot question. :D

First off, I would like to take this opportunity to say,
"Thanks to all the devs out there who have made these amazing things possible! Without you guys, the NookColor would be so booooorrrrriiiiinnnnngggg...."
Now unto my question!
I currently have my NC running CM7 nightly 136 on eMMC, overclocked by the built-in kernel of Dalingrin @ 1.350Ghz. I have lots of apps, located both on the phone (Internal partition?) and on the microSD. All games I keep in the microSD. They are backed up by Titanium Backup Pro 3.90, which can restore to the original location, whether it's microSD or phone. The actual backup folder is located in the eMMC.
NOW! I would like to try something out.
I would like to create a size-agnostic SD Card image, as detailed here, and flash the Dualboot Phiremod/Honeycomb ROM that can be found here.
I do believe that this is possible, since the microSD I have is a Samsung Class 2 16GB, who have never failed me (so far).
If I'm not mistaken, that would give me 3 ROMS.
CM7 Nightly on eMMC,
Phiremod & Honeycomb on miscroSD.
My questions are:
1.If I would boot to CM7 Nightly and restore my apps, specifically the apps located in the microSD, will they be restored?
2.Where is the phone (internal partition) of the Phiremod ROM and Honeycomb ROM located in the microSD? Will it be 'touched' by the CM7 nightly installed in the eMMC?
I hope I didn't confuse you.

I never done such things but want to chip in with some logical thoughts.
Based on what you have described,
1. it will probably work IFF (if and only if) there is an uSD installed.
2. Please do realize that eMMC and uSD is two different storages, two different locations.
eMMC is referred as the internal memory that comes with the NC while uSD is an external, additional storage. There are no conflict between the two.
Note: I don't know what you have referred to when calling "phone", if you meant the NC, then stop calling it "phone", if you meant a real phone such HTC, Motorola, ..... then you're in the wrong section.

votinh said:
I never done such things but want to chip in with some logical thoughts.
Based on what you have described,
1. it will probably work IFF (if and only if) there is an uSD installed.
2. Please do realize that eMMC and uSD is two different storages, two different locations.
eMMC is referred as the internal memory that comes with the NC while uSD is an external, additional storage. There are no conflict between the two.
Note: I don't know what you have referred to when calling "phone", if you meant the NC, then stop calling it "phone", if you meant a real phone such HTC, Motorola, ..... then you're in the wrong section.
Click to expand...
Click to collapse
Sorry, didn't mean to confuse you. When I said phone, I meant that the NC says 'phone' even though it meant the internal partition where the apps are installed. For example, if you try moving an app installed in the NC to the microSD, it will say in the button, 'move to sd'. Once it has been moved, the button will change and will then say, 'move to phone' even though it just meant the internal partition.
Now I got intrigued by your reply. What is a uSD and how do I make one along with the instructions that I have posted to follow? If my guess is correct, I'd say that it is a seperate partition created within the microSD that will act as the 'internal partition' of the ROMs that are housed in the microSD. It is the space wherein the apps will go once it is installed from the ROM installed in the microSD. Am I correct? If so, does that mean that it is possible to create 2 uSDs for the 2 ROMs that will be installed in the microSD?
Thanks so much for your reply. You've been very helpful.
Sent from my NookColor using Tapatalk

Just call it NC's eMMC which should be the right term to say as it has been used.
uSD is the shortcut of the "micro SD" or "micro SDHC" card.
"If my guess is correct, I'd say that it is a seperate partition created within the microSD" Ans: I do not know 100% sure but I thought both ROMs will share the same partition.
"that will act as the 'internal partition' of the ROMs that are housed in the microSD"
Ans: yes, it is true but just to make life easier, drop the "internal" word. Internal should only being used for the internal memory (eMMC), anything resides on the external uSD, just call them uSD.
"It is the space wherein the apps will go once it is installed from the ROM installed in the microSD. Am I correct?" Ans: yes, you are correct
NOTE: when installing custom ROMs on the uSD, it will automatically create those partitions for you as /system where the ROM lives, /data where the apps installed and /media is the rest for storage.
"If so, does that mean that it is possible to create 2 uSDs for the 2 ROMs that will be installed in the microSD?"
Two (2) uSD is 2 totally seperate card.
You can install two ROMs on one uSD card which called "dual boot"
You can install one ROM on one uSD card, i.e. if you have 2 uSD cards, you can install CM7 on one and Honeycomb on the other.

votinh said:
Just call it NC's eMMC which should be the right term to say as it has been used.
uSD is the shortcut of the "micro SD" or "micro SDHC" card.
"If my guess is correct, I'd say that it is a seperate partition created within the microSD" Ans: I do not know 100% sure but I thought both ROMs will share the same partition.
"that will act as the 'internal partition' of the ROMs that are housed in the microSD"
Ans: yes, it is true but just to make life easier, drop the "internal" word. Internal should only being used for the internal memory (eMMC), anything resides on the external uSD, just call them uSD.
"It is the space wherein the apps will go once it is installed from the ROM installed in the microSD. Am I correct?" Ans: yes, you are correct
NOTE: when installing custom ROMs on the uSD, it will automatically create those partitions for you as /system where the ROM lives, /data where the apps installed and /media is the rest for storage.
"If so, does that mean that it is possible to create 2 uSDs for the 2 ROMs that will be installed in the microSD?"
Two (2) uSD is 2 totally seperate card.
You can install two ROMs on one uSD card which called "dual boot"
You can install one ROM on one uSD card, i.e. if you have 2 uSD cards, you can install CM7 on one and Honeycomb on the other.
Click to expand...
Click to collapse
So basically, the Phiremod & Honeycomb ROMs will BOTH sit in one /system partition, and they will also share the same /data partition? Does that mean their apps will sync to each other? Like install it on Phiremod and it will end up installed in the Honeycomb as well? I know that's quite impossible--just being hopeful.
Okay, and the CM7 Nightly ROM in the eMMC has it's own /data partition which houses the apps. Now what will happen if while you're on the CM7 Nightly, you used the App2SD app to move an app from the eMMC's /data partition to somewhere on the uSD? Where in the uSD will it be stored? Will it be in the uSD's /data partition or the /media partition? I'm guessing it'll be in the /media...right?
Thanks for being so patient with me! I'm learning a lot from you!

les02jen17 said:
So basically, the Phiremod & Honeycomb ROMs will BOTH sit in one /system partition, and they will also share the same /data partition? Does that mean their apps will sync to each other? Like install it on Phiremod and it will end up installed in the Honeycomb as well? I know that's quite impossible--just being hopeful.
Click to expand...
Click to collapse
That I don't know 100%, you might want to ask someone who actually have the dual-boot option uSD card.
Okay, and the CM7 Nightly ROM in the eMMC has it's own /data partition which houses the apps. Now what will happen if while you're on the CM7 Nightly, you used the App2SD app to move an app from the eMMC's /data partition to somewhere on the uSD? Where in the uSD will it be stored? Will it be in the uSD's /data partition or the /media partition? I'm guessing it'll be in the /media...right?
Click to expand...
Click to collapse
1. just to be clear, you should NOT use the bootable uSD where ROM installed on it, just use another uSD, on which no /data or /media partition. If you have the bootable uSD plugged in, it would boot from the uSD already, not the CM7 from eMMC.
2. With the uSD, I assume it will move under "Android" folder on the uSD.
Thanks for being so patient with me! I'm learning a lot from you!
Click to expand...
Click to collapse
We're learning from each other and that's the purpose of the public forums.

[Q] Nook Color only shows 800mb of free space in Apps

I have a Nook Color that was deregistered. I never registered it and followed these instructions to boot to CWM, and I then installed the latest Encore CM9 and the CM9 GApps.
When I go into Apps, it shows that there's only around 700mb free.
I installed DiskUsage and it shows /mnt/emmc, /mnt/sdcard, /rom, and [Root required]. /mnt/emmc I'm guessing is the NC's internal memory - it's 5.1gb and full of B&N stuff, Good Housekeeping, etc. I tested by using a manga reader application to see where it downloads by default, and sure enough it saved to the SD card by default.
I'm guessing the rooting directions excluded something or I may have a different version of a NC than I thought. Is there any proper set of instructions I should follow? I just burned the 2gb image to a 2gb microSD card from here, but would that be the root cause of the issue - use a 2gb microSD, only have 2gb available? In any case, I've got that image burned and CWM set up per the same thread's instructions. Do I need to do anything else? Is there some kind of partition tool I have to use, kind of like diskpart on a Windows boot CD to delete and mount partitions on the NC before continuing?

You have everything right. With the older Nook Colors they came with 1000MB set aside for app storage and 5000MB for media storage. Usually the 1000 MB is plenty for apps. You have used about 300MB so far storing installed apps and settings for your system apps leaving you with 700MB left. That is a lot. Apps do not take much room. Media is where you eat up storage, pictures, movies, books, etc.
The CWM card you used does not effect your nook storage.
You can repartition if you want, but your setup works well for most people.

leapinlar said:
You have everything right. With the older Nook Colors they came with 1000MB set aside for app storage and 5000MB for media storage. Usually the 1000 MB is plenty for apps. You have used about 300MB so far storing installed apps and settings for your system apps leaving you with 700MB left. That is a lot. Apps do not take much room. Media is where you eat up storage, pictures, movies, books, etc.
The CWM card you used does not effect your nook storage.
You can repartition if you want, but your setup works well for most people.
Click to expand...
Click to collapse
How hard is it to repartition? I've got around 2gb of manga I copied off my former Touchpad that I was hoping to copy over. I know, the easy answer would be to just buy a bigger microSD card but I wanted to see what I can get out of the Nook itself first.

MJPByron said:
How hard is it to repartition? I've got around 2gb of manga I copied off my former Touchpad that I was hoping to copy over. I know, the easy answer would be to just buy a bigger microSD card but I wanted to see what I can get out of the Nook itself first.
Click to expand...
Click to collapse
It is not really hard to repartition. There is a thread here that tells you how to do it.
http://forum.xda-developers.com/showthread.php?p=14101197
As I said earlier, the original nooks had 1GB for app storage (/data) and 5GB for media (emmc). The newer nooks came with 5GB for apps and 1GB for media. The author of the above thread offers zips to repartition to either scheme and even included a 2GB app/4GB media version.
I don't know what manga is, is it media or apps? You already have the optimum setup for media. A bigger SD is generally used for more media storage. I really think you might not understand how each partition is used. The app partition (/data) only stores the app program itself and some minor settings files. All of the data that a program uses like books, document files, etc. or downloaded things like music, etc are stored on media partitions like the 5GB media partition (emmc) or sdcard. So I'm not sure you need to change anything. You only want to change if you want more room to store many very large programs (not the files they use).

leapinlar said:
It is not really hard to repartition. There is a thread here that tells you how to do it.
http://forum.xda-developers.com/showthread.php?p=14101197
As I said earlier, the original nooks had 1GB for app storage (/data) and 5GB for media (emmc). The newer nooks came with 5GB for apps and 1GB for media. The author of the above thread offers zips to repartition to either scheme and even included a 2GB app/4GB media version.
I don't know what manga is, is it media or apps? You already have the optimum setup for media. A bigger SD is generally used for more media storage. I really think you might not understand how each partition is used. The app partition (/data) only stores the app program itself and some minor settings files. All of the data that a program uses like books, document files, etc. or downloaded things like music, etc are stored on media partitions like the 5GB media partition (emmc) or sdcard. So I'm not sure you need to change anything. You only want to change if you want more room to store many very large programs (not the files they use).
Click to expand...
Click to collapse
Manga's Japanese comics, so in this case media.
In the repartition thread, would I be using the 1.1 "old" partition zip? And am I just booting to a CWM SD card and running the zip after backing up the device? Or is there a different set of steps since it's a rooted device already?
I may give it the test of time and see if I do need to futz with the partition table after all, but if I do I'd like to have the basics ready to go.

MJPByron said:
Manga's Japanese comics, so in this case media.
In the repartition thread, would I be using the 1.1 "old" partition zip? And am I just booting to a CWM SD card and running the zip after backing up the device? Or is there a different set of steps since it's a rooted device already?
I may give it the test of time and see if I do need to futz with the partition table after all, but if I do I'd like to have the basics ready to go.
Click to expand...
Click to collapse
From what you said in your first post you already have the old partition scheme. No need to change anything. Anything you do will give you less media storage space which is what you need for your comix.
You do not need to be rooted. All you need is the ability to boot to a CWM card and backup and flash things.

[Q] CM7.2 /media memory

I tried to search, but found no answer...
Yesterday I rooted my stock NC with MN5.08.20. I finally decided today to flash cm7.2 (which seems to be stable, judging after the forum discussions) to fully "unleash the FORCE" of my NC because I'm very angry: I cannot fully use the /data folder. I mean, I can put there my books/music, but I can't read them. So, I have only one issue not solved yet: will I be able to fully use the 5GB of internal storage with cm7.2? Is there a menu/option or a box to check which allows mounting the internal storage as visible and usable? Will I be able to read the books deposited there?
Or does the cm7.2 repartition the device with 1gb /data and 5gb /media? If not, please recommend me a ROM which does this thing.
Please answer me!
Thanks in advance!

amoromete said:
I tried to search, but found no answer...
Yesterday I rooted my stock NC with MN5.08.20. I finally decided today to flash cm7.2 (which seems to be stable, judging after the forum discussions) to fully "unleash the FORCE" of my NC because I'm very angry: I cannot fully use the /data folder. I mean, I can put there my books/music, but I can't read them. So, I have only one issue not solved yet: will I be able to fully use the 5GB of internal storage with cm7.2? Is there a menu/option or a box to check which allows mounting the internal storage as visible and usable? Will I be able to read the books deposited there?
Or does the cm7.2 repartition the device with 1gb /data and 5gb /media? If not, please recommend me a ROM which does this thing.
Please answer me!
Thanks in advance!
Click to expand...
Click to collapse
CM7 does not re-partition anything. You are a little confused about /data and /media. All books and other media must be stored on the /media (emmc in CM terms) or on your sdcard. /data is only used for storing applications. So if you are using a root file manager to put books there, no application on any ROM will be able to read them.
The older Nook Colors had a different partition scheme than the newer ones. They had 1GB /data and 5GB /media. The newer ones have them reversed so that more application space and less media space is available. Dean Gibson has a thread in the general forum that tells you how to repartition the newer Nooks back to the old scheme. So, if you have the newer Nook and you want more internal media space go here:
http://forum.xda-developers.com/showthread.php?p=14101197

thanks a lot
Already read the thread... But how do I do the MANDATORY REBOOT INTO RECOVERY? Do i have to reboot from cwm, let the device boot completely, open ROM Manager and select REBOOT INTO RECOVERY?

CWM is recovery. Some cwm activities require a reboot and you want to get back to cwm to do the next required step. That's why there is a reboot recovery command in cwm. Otherwise, just get to CWM and you are in recovery. Unless, of course, you are using TWRP, in which case, TWRP is recovery.