Related
It is in my spare parts.
Thanks
Use the search feature... there are quite a few thread with this question answered...
In short, it move the dalvik vm cache from /data to /cache, giving you 40MB+ extra free space in /data to install apps...
What is dalvik cache -> http://wiki.cyanogenmod.com/index.php/Dalvik-cache
What is dalvik cahce relocation -> http://wiki.cyanogenmod.com/index.php/Dalvik-cache-relocation
I actually saw that after I posted. What are the negatives then? Just less room for cache from other programs?
Well, so far, no one's complained abt any problems cause by this, but yeah, essentially, this reduces your cache size. It could cause problems with OTA updates which can be large, but if you're using a custom ROM, you wouldn't be using OTAs anyway...
Ok thanks for the help. So if I do a data wipe to a new ROM, does this operation get undone and it goes back to normal?
Odd.
I'm running Cyanogen 5.0.3.1 and I don't have this in my spare parts?
@hah2110... no a data wipe does not move the dalvik cache back to the data partition. Don't know if you can uncheck it in SpareParts to revert, but if not moving it back has to be done by modifying/removing the init script which does it. Though keep in mind, if it cannot be unchecked in Spart Parts, it probably means it's not safe to revert...
@Amdathlonuk, CM automatically has this hook enabled. Enomthers 1.7.1+ has this as an option in Spare Parts
craigacgomez said:
@hah2110... no a data wipe does not move the dalvik cache back to the data partition. Don't know if you can uncheck it in SpareParts to revert, but if not moving it back has to be done by modifying/removing the init script which does it. Though keep in mind, if it cannot be unchecked in Spart Parts, it probably means it's not safe to revert...
@Amdathlonuk, CM automatically has this hook enabled. Enomthers 1.7.1+ has this as an option in Spare Parts
Click to expand...
Click to collapse
Thanks man.
Go away for a week and you lose all knowledge of what's going on!!
So many roms, so little time....
It actually is an option in Spare Parts, but it says you need to do a factory reset it you revert back.
hah2110 said:
It actually is an option in Spare Parts, but it says you need to do a factory reset it you revert back.
Click to expand...
Click to collapse
Yep, expected that... didn't run Enom's for long so I wasn't sure... but from what I've read and understood, moving dalvik-cache to /cache is permanent... if u revert u have to clear everything via recovery and re-install everything!!
My suggestion, go with this... been using it for a while... no problems...
There has been some confusion over whether ClockworkMod Recovery actually wipes the dalvik-cache correctly. I decided to test it myself. I booted into CW recovery, fired up ADB, and mounted /data. Looking inside /data/dalvik-cache I saw a list of .dex files (the cache, of course). So I unmounted, then used the CW menu to wipe the dalvik-cache. Note, this is NOT just the "wipe cache" option on the main menu. This is a separate option under "advanced." Then I re-mounted /data and looked again . . . and the dalvik-cache directory was completely gone. Rebooting into Android and looking again, it was back (rebuilt) after a long-ish boot time (rebuilding phase), so I'm sure that at least my install of CW v2.5.0.1 is wiping the dalvik-cache just fine.
If you're still not sure, you could use ADB to wipe the cache yourself:
Code:
adb shell
mount /data
rm -rf /data/dalvik-cache/*
Then you can use the Clockwork menu to wipe everything else and flash your ROM. These three commands actually just delete everything inside the dalvik-cache directory, whereas Clockwork appears to remove the directory entirely. Doesn't really matter either way, the system will replace the directory if it gets deleted.
Feel free to replicate my results. That's how science works.
UPDATE: Just did a similar test with the "wipe data/factory reset" menu option. This actually wipes the entire /data directory, which includes the dalvik-cache, so doing a dalvik wipe would be redundant if you're doing a full data wipe anyway. Correct me if I'm wrong.
Thanks I've never had any problems with clockwork, but it seems like there has been a pox on its name since my arrival to the android/evo community.
In particular, I always wondering if I was just being overly redundant going into the advanced menu and wiping dalvik cache ON TOP of a data/cache wipe when flashing a new rom. I'm gonna trust your experiment and stop doing it!
vladthedog said:
Thanks I've never had any problems with clockwork, but it seems like there has been a pox on its name since my arrival to the android/evo community.
In particular, I always wondering if I was just being overly redundant going into the advanced menu and wiping dalvik cache ON TOP of a data/cache wipe when flashing a new rom. I'm gonna trust your experiment and stop doing it!
Click to expand...
Click to collapse
Can't argue with empty directories. The only possible catch would be if there is a dalvik-cache log or something elsewhere outside of /data, but I'm 99.7% sure just doing a "data wipe / factory reset" will wipe dalvik no problem. Still do the other "wipe cache" option as well, though.
Oh I will..I'm just lazy and if I don't have to go ALL the way into the advanced menu too wipe my dalvik I will feel a whole lot better about the world
Sent from my PC36100 using XDA App
redundancy never hurt anybody
when you clear the dalvik are you supposed to get some sort of confirmation. whenever i clear it ask me i want to and when i reply yes, it just goes back to the menu. idk if anything actually is happening. (is this what you guys are referring to?)
Yes, that's what we're talking about. Mine is the same way, but it appears to be fine. For one thing, if you do a data wipe first, the dalvik cache goes with it so there would be no real delay even if you then tried to clear it separately. It's already gone. But there should be some sort of confirmation added to the next update, IMO.
crakerjaks said:
redundancy never hurt anybody
Click to expand...
Click to collapse
I always wipe at least twice, it's cleaner. No one likes leaving any bits behind after wiping only once.
firemedic1343 said:
I always wipe at least twice, it's cleaner. No one likes leaving any bits behind after wiping only once.
Click to expand...
Click to collapse
Ah, aha, yes. Very good.
crakerjaks said:
redundancy never hurt anybody
Click to expand...
Click to collapse
redundancy never hurt anybody
TheBundo said:
redundancy never hurt anybody
Click to expand...
Click to collapse
I thought it killed the cat?
Sent from my PC36100 using XDA App
Since I have seen alot of individuals within ROM threads stating things such as, "Your ROM bricked my phone." or "I can't get your new ROM to install." decided to make this guide. Hopefully it will solve this issue and help educate people.
What not flasing correctly can do:
1. Cause your phone not to boot
2. Cause Force closes and issues
3. POSSIBLY Brick your phone (though I have not seen an Eris Brick yet)
We must also remember that:
1. The devs of these ROMs are NOT responsible for any damage to your phone
2. The devs spend alot of time with testing to make sure the ROM works.
3. A ROM will NOT always flash over a previous ROM
OK.. So onto the main topic..
assuming you are rooted and using AMON's Recovery. I suggest AMON's because Clockwork has had recent issues. Big thanks to AMON for this!
How to install a ROM properly:
1. Boot into recovery ( with either reboot to recovery option or powerdown and then holding volume up and power )
2. Goto Backup/Restore and do a NAND Back-Up
3. Do a data/factory wipe ( NOTE: if the dev says you can flash over an old version you dont NEED to do this, but if you don't do this and the ROM is not booting then I suggest you restart this process [minus the back-up] and do a data/factory wipe)
4. Do a Dalvik Wipe... 3 times (ALWAYS ALWAYS ALWAYS do this)
5. Flash ROM
6. Reboot and Wait ( after a Dalvik wipe and flashing ROMs first boot can take 3+ minutes to load... BE PATIENT )
More to Come...
If you could, please explain what a Dalvik flash does. Thanks in adavnce, and thanks for this thread. I've never had any issues flashing, but it's nice to see someone explain the basics....
MOS95B said:
If you could, please explain what a Dalvik flash does. Thanks in adavnce, and thanks for this thread. I've never had any issues flashing, but it's nice to see someone explain the basics....
Click to expand...
Click to collapse
"Dalvik cache is a program cache area for the program Dalvik. Dalvik is a java based virtual machine that is the bases for running your programs (the ones that have the .apk extension). In order to make access times faster (because there's not JIT (just in time) compiler installed by default), the Dalvik-cache is the result of Dalvik doing a optimization of the running program." - Taken From Android forums
Basically it analyzes the phone before it boots. Then it sees what apps you have and will use and assigns cache to them. This way they will load quickly and properly.
When you flash a new ROM apps can change, or if you do a data/factory reset those apps are gone. SO wiping the Dalvik allows it to rebuild itself for what YOU are using.
This is also good to do after cleaning out or removing many unused apps from the phone. I usually do it once a week AT LEAST.
With the exception of a 2.1 ROM running apps2sd on an ext partition, is there really any point to wipe Dalvik if you have just done a wipe data/factory reset (which also wipes Dalvik cache)? And what exactly is the point of wiping Dalvik three times - why is once not enough? Is there something wrong with Amon Recovery which prevents a full Dalvik wipe unless you do it more than once?
It certainly doesn't hurt to wipe Dalvik after a wipe data/factory reset, but it should be already wiped.
I'm still fairly new, but I've flashed quite a bit. I didn't know to wipe dalvik x3. that's an interesting bit of info. Any reason why? Thanks
lp4261 said:
I'm still fairly new, but I've flashed quite a bit. I didn't know to wipe dalvik x3. that's an interesting bit of info. Any reason why? Thanks
Click to expand...
Click to collapse
Safety reasons... personally I do factory then dalvik 3x then factory again and dalvik 3x again.
Sent from my ERIS using XDA App
I tried this and now I have a paper weight lol j/k
tazzpatriot said:
I tried this and now I have a paper weight lol j/k
Click to expand...
Click to collapse
My plan worked
Sent from my ERIS using XDA App
I believe the reason is that sometimes even after a wipe people have reported residual data in the cache, I personally don't do it three times but I do a wipe, dalvik, dalvik, wipe.
Its not going to hurt anything and it gives me piece of mind.
Delvaris said:
I believe the reason is that sometimes even after a wipe people have reported residual data in the cache, I personally don't do it three times but I do a wipe, dalvik, dalvik, wipe.
Its not going to hurt anything and it gives me piece of mind.
Click to expand...
Click to collapse
cool. Thanks for the good info.
x3? I do once before and once after. Frankly once before has been enough for me... though I suppose being safe has never hurt.
If the dalvik cache still won't clear after 3 times you can piss on your phone. That seems to really help.
in most cases once is enough but like I said, it's not likely to hurt anything to give it a couple of wipes to make sure all the junk data is cleared.
Let me put it this way...
I wont use a public toilet just by seeing it is clean... ill clean it like twice ...
This is why I dalvik 3 times lol
Sent from my ERIS using XDA App
icbeer said:
If the dalvik cache still won't clear after 3 times you can piss on your phone. That seems to really help.
Click to expand...
Click to collapse
I tried that today.. now my phone wont turn on... any fix?...
Jk
Sent from my ERIS using XDA App
It would be interesting for someone like Amon to comment on the need to wipe data or recovery more than one time. In my opinion, once is enough. I'm 100% confident than wipes #2, #3, and so on are wiping blank space...
hallstevenson said:
It would be interesting for someone like Amon to comment on the need to wipe data or recovery more than one time. In my opinion, once is enough. I'm 100% confident than wipes #2, #3, and so on are wiping blank space...
Click to expand...
Click to collapse
I personally and others have experienced residual data... so is three too much... maybe... but its safe... two might be a better choice... this guide was made to make sure you have no issues... therefore I said three times for safety... if you want to just do it once... be my guest
Sent from my ERIS using XDA App
At the risk sounding like an idiot, I must ask this:
You mention wiping the Dalvik once a week. When you do this wipe, do you replace it (flash) something over it? Or can you simply wipe then reboot.
Sent from my FroyoEris using XDA App
J&M said:
At the risk sounding like an idiot, I must ask this:
You mention wiping the Dalvik once a week. When you do this wipe, do you replace it (flash) something over it? Or can you simply wipe then reboot.
Sent from my FroyoEris using XDA App
Click to expand...
Click to collapse
Yep, just wipe and boot. After wiping dalvik, it will redo your app tree or configuration if you will, just clears all the current info and rebuilds it fresh.
Great thread, people still need it I guess
workshed said:
Yep, just wipe and boot. After wiping dalvik, it will redo your app tree or configuration if you will, just clears all the current info and rebuilds it fresh.
Great thread, people still need it I guess
Click to expand...
Click to collapse
Lol thanks buddy!
Sent from my ERIS using XDA App
I have tried to flash my nook several times. First with deeperblues honeycomb and then with cm7. On the honeycomb flash it just hangs on the android_ screen and with the CM7 it hangs on the cyanogen splash screen.
Have tried with different versions of CWR and different SD cards. have tried formatting boot and without for the Honeycomb. Always formatting cache, data and system for both cm7 and honeycomb.
Each time, i flash back to 1.0.1 stock, then root, then try to flash the mod again.
It always works returning to the stock 1.0.1 using the cwr complete restore found on the nook color portal. And the autonooter always works as well.
This is frustrating me as im not amble to install any cool mod on the nook. Does anyone have any ideas as to why my NC is resisting any change i make to it other than root stock 1.0.1?
It sounds like a symptom of not wiping data, but you said you're doing that...
Just to be clear, before flashing, you're doing "wipe data/factory reset", then "wipe cache", then "wipe dalvik cache"? Formatting /system shouldn't be necessary but I guess it wouldn't hurt.
STaria said:
It sounds like a symptom of not wiping data, but you said you're doing that...
Just to be clear, before flashing, you're doing "wipe data/factory reset", then "wipe cache", then "wipe dalvik cache"? Formatting /system shouldn't be necessary but I guess it wouldn't hurt.
Click to expand...
Click to collapse
I have tried the wife data/factory reset option once when trying to flash honey comb. Still gave me the same issue. All of the how to's i read had me formatting the data, cache and system, and depending on the how to sometimes the boot partition as well. Have been following those to the letters. This is the first time i have heard of wiping the dalvik cache, is that different than wiping cache under the mounts and storage?
Was there a color sticker on the box of your Nook?
Also, have you tried doing an SD only install rather than flashing the internal?
fuul4nook said:
Was there a color sticker on the box of your Nook?
Also, have you tried doing an SD only install rather than flashing the internal?
Click to expand...
Click to collapse
Not sure about the color sticker on the box when i bought it. It was right after it came out so going on a year ago. I have tried the SD only install, that works with honeycomb at least, thats the only one i have tried, all be it laggy because i only have a class 2 card at best.
jonwymore said:
Not sure about the color sticker on the box when i bought it. It was right after it came out so going on a year ago. I have tried the SD only install, that works with honeycomb at least, thats the only one i have tried, all be it laggy because i only have a class 2 card at best.
Click to expand...
Click to collapse
I did some searching and i think what your eluding to is maybe my partition is the new style(although like i said i bought it within about a week or two of it originally being released)? would running the repartition in CWR make a difference do you think?
The option to wipe dalvik cache is under "advanced" in CWR. Try that in conjunction with a data and cache wipe.
As for the partitions, I don't think it should make a difference. It also sounds like you're on the old partitioning scheme which is the better one to have. You could try flashing the repartition/reformat zips just for the hell of it. Personally I went with the custom 2/4 setup.
STaria said:
The option to wipe dalvik cache is under "advanced" in CWR. Try that in conjunction with a data and cache wipe.
As for the partitions, I don't think it should make a difference. It also sounds like you're on the old partitioning scheme which is the better one to have. You could try flashing the repartition/reformat zips just for the hell of it. Personally I went with the custom 2/4 setup.
Click to expand...
Click to collapse
Will try once with wiping the delvik cache, data, and cache. I wont wipe the system or the boot. If that doesnt work, il try the repartition and start from scratch. If anyone can think of anything else please let me know.
Hai all, I'm new to iconia. I've been flashing a custom ROM, a Taboonay ROM, great ROM.
I'm curious about get the original setup like a brand new iconia, without any trash folder after I restored my stock ROM. Tried with hitting the reset button, but it didn't work at all, still got the titanium backup folder and documents..is there anyway i could do to make it clean like i bought from the shop?
Thank you for your response..
hhmmmm
I may be missing a step here, but...
Boot into cwm
Clear user data, cache, dalvik, battery cache
Flash stock rom using cwm
Clear user data, cache, dalvik, battery cache
Someone please correct me if I am missing something here
Works for me. Have done so a few times.
entropy.of.avarice said:
I may be missing a step here, but...
Boot into cwm
Clear user data, cache, dalvik, battery cache
Flash stock rom using cwm
Clear user data, cache, dalvik, battery cache
Someone please correct me if I am missing something here
Click to expand...
Click to collapse
erica_renee said:
Works for me. Have done so a few times.
Click to expand...
Click to collapse
I tried this steps so many times, but still the old folder exsist, thank you for the response.
There is a thread in the Dec section that talks about during entering recovery switching the orientation rocker.and also a thread of putting a blank file landed something then flashing that as well.both of these or one might be related to your issue.
Good luck.I just remember reading those threads.have not tried either as no need to.
erica_renee said:
There is a thread in the Dec section that talks about during entering recovery switching the orientation rocker.and also a thread of putting a blank file landed something then flashing that as well.both of these or one might be related to your issue.
Good luck.I just remember reading those threads.have not tried either as no need to.
Click to expand...
Click to collapse
Hmm, pretty sure the orientation rocker startup is just for clearing cache - I could be wrong. Took me like 20 times to get it to work, remember using it a few times when i thought I had bricked my a500
erica_renee said:
There is a thread in the Dec section that talks about during entering recovery switching the orientation rocker.and also a thread of putting a blank file landed something then flashing that as well.both of these or one might be related to your issue.
Good luck.I just remember reading those threads.have not tried either as no need to.
Click to expand...
Click to collapse
Ok, thank you, i'll look for it..cheers..
follow these steps and your device will be just like new ( no leftovers )
Especially step #5 where it formatted the boot, system, and data:
It's like you formatted the hard drive on your desktop before installing the OS
wiping the cache & factory reset is not enough !!
http://forum.xda-developers.com/showthread.php?p=15383719#post15383719
UnicornKaz said:
follow these steps and your device will be just like new ( no leftovers )
Especially step #5 where it formatted the boot, system, and data:
It's like you formatted the hard drive on your desktop before installing the OS
wiping the cache & factory reset is not enough !!
http://forum.xda-developers.com/showthread.php?p=15383719#post15383719
Click to expand...
Click to collapse
I think i'll try it, because only wipe & factory reset still keep all folder like gameloft, titanium, etc..even all downloaded files remain exsist...so it's not enough...