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Smaller size sdcards work better then big sized sdcards (also known as high capacity)

OK so I've been running many version and builds of android since day one on my tmous hd2. At first it was with the stock 16gb sdcard, (till it got corrupted, LOL) so then I switch to a 2gb I had around. I have only formatted this 2gb card once in the begging and never again.many times I have deleted the android folder and many times I has switch to new builds ( I think I try everyones.latest I been using n very stable JDMS 1.3) n haven't had any issues. Like freezing or SOD. Now two days ago I help my friend with his and his wife's tmous hd2 with the 16gb card. So I did a fresh format fat32 then flash the same rom (ozDroid) and radio I been using for months. It results they are getting freezes and occasionally SOD. So for a test I took my wife's tmous hd2 with 16gb card did the hole setup an guess what the freezing and SOD is the more often..when I don't get any with my sdcard 2gb. Could there be an issue with high capacity cards. And could that be the reason why many tmous have the more problems with freezes and SOD
Sent from my HTC HD2 using XDA App

I use stock 16gb and dont have those issues.
Sent from my HTC HD2 using XDA App

this is common knowledge in the IT field. the larger the card, the more slowly it will write and access small files, such as the files needed to run android. take 100 small text files and copy them to a 256 thumb drive, and an 8 gb thumb drive. you can copy them all to the 256mb drive, and delete them all again, before the are all copied to the 8gb thumb drive. the 8 gb drive, will work much faster copying an .avi, or large file than the 256, but it sucks at lots of small files.
but it's good that you're posting your exp here. many people would not know this otherwise, and may stop experimenting with android due to frustration, when all they need is a $10 2gb card from walmart.
another couple tips when dealing with solidstate memory. just like a harddrive, files can become fragmented if you have multiple tasks or file transfers going at the same time. to avoid this, make sure each is done before starting another set of files. next, do not defrag solid state drives. they only have a limited amount of times they can read and write to each sector, and defragging, and excessive copying/deleting, wears down the material, and kills sectors of the drive. and last but not least, watch your battery. just as it says not to attempt an install with less than 50% battery, don't run your phone down to a dead battery when possible. because your booting of the microsd, it's constantly being accessed by read and write functions, and if the battery dies before it finishes writing, you get corrupted files, and you'll have to do your install all over.

No lockup or freeze with 16GB.

prking07 said:
I use stock 16gb and dont have those issues.
Sent from my HTC HD2 using XDA App
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Same here. 16 gb SDHC, no problems.

I haven't noticed any difference between a Class 2 2gb, Class 2 16gb, or a Class 4 8gb - they all run about the same with not noticeable differences in boot time, smoothness, or SODs, even though the class 4 is 2x as fast.

hi guys,
before you post any comment, you can grab a none SDHC card, and do a comparison.
if you have benchmark software, please look at the "access time", the None-SDHC card always faster than the SDHC card. not the speed, but the access time.
after I change to 2GB SD Card, I never meeting any sleep, lag program with any version of roms.
if you don't have none-SDHC card, please do not make any conclusion.

16 gb class 10 kingston sdhc
works great
compaired a class 6 no name 8gb sdhc and the stock 16gb class 2 the class six lags less than the class 2 but the class 10 16 gb kingston is super fast

I am using class 4 8GB and 16GB, no diffrence found.

I can confirm, going from 16gb to 8gb, I've had far less issues with the 8gb card using the same setup. 0 SODs when I'd get them daily with the 16gb card. May or may not have anything or everything to do with it, but I'm sticking with the 8gb card. lol

My experience has been that performance has been about the same whether using a 2 GB SD card or a 16 GB SDHC. However, it seems that my 16 GB card was slower at one point because I had an excessive number of individual files on it. It's a double edge sword because you have all that capacity but the more you use it the slower it seems to run.

I had this issue aswell but I updated my radio to 2.12.xx.xx. and since then I have not seen any performance issue due to the SD card size.
Sent from my HTC HD2 using XDA App

qingcai said:
hi guys,
before you post any comment, you can grab a none SDHC card, and do a comparison.
if you have benchmark software, please look at the "access time", the None-SDHC card always faster than the SDHC card. not the speed, but the access time.
after I change to 2GB SD Card, I never meeting any sleep, lag program with any version of roms.
if you don't have none-SDHC card, please do not make any conclusion.
Click to expand...
Click to collapse
That's very presumptuous of you.
I fixed all of my lag and screen freeze problems with a combination of setCPU settings, ADW launcher settings, and updating my radio rom.
Before I finished doing all of that this morning, I'd get a freeze from wake fairly often. Since then, not a single freeze, and trust me, I've been trying to get it to freeze up.
Believe what you will my friend, but punishing yourself with a 2GB card just seems silly when people are outright telling you that the size isn't the problem.
Good luck either way!

apallohadas said:
That's very presumptuous of you.
I fixed all of my lag and screen freeze problems with a combination of setCPU settings, ADW launcher settings, and updating my radio rom.
Before I finished doing all of that this morning, I'd get a freeze from wake fairly often. Since then, not a single freeze, and trust me, I've been trying to get it to freeze up.
Believe what you will my friend, but punishing yourself with a 2GB card just seems silly when people are outright telling you that the size isn't the problem.
Good luck either way!
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Click to collapse
Yes ur are right with the new builds and using setting and programs like setcpu or even auto killers will help eliminate this problems. But I I said in the first post was that high capacity cards tend to give u more problems, using my 2gb (I think all the way to 6gb is non high capacity) I have no need for such adjustments to whatever build I use..u can read post 2, is very well explain there.
Sent from my HTC HD2 using XDA App

My 32GB did worked only one time, after first reboot i cant use android. But 2gb works like a charm

Just got a 16GB Micro CLASS 10

Hey guys. I just got my new Micro SDHC 16GB Class 10 card. Yes class 10.
I copied everything from my stock HD2 16GB SD, Everything. Right into my new Wintec 16GB Micro C10. and then reboot to Android. Everything seems to be running smooth and fine. But I do have one weird issue. Sometimes it takes a little while to wake up from standby. When I hit the Wake button the key lights turn on, but screen wont. Most of the time it wakes right up, but sometimes it doesn't. Others I'll hit it and the screen stays black and if I touch the screen then it wakes up and I can slide to unlock.
Wasn't like this before. Is this the card going to sleep, or is something not right? or Does anyone have any thoughts or suggestions. I'm thinking I might format the card in Android (so it's properly formated) and then recopy everything over.

The only thing that's ever done this for me is SetCPU profiles, I've been on the stock 16gb that came with my HD2 and it wakes up just fine with the right SetCPU profile.
What kernel and which scaling are you using? It might be interacting with the SD card a little differently. Have you run Quadrant? although quadrant scores are usually meaningless you can use them for some information. Your I/O score should be a lot higher on the new card if it is actually faster. I have heard of name-brand class 2 significantly outperforming generic/cheap class 6 cards.

I've said this many times, my stock class 2 outperforms my class 4 8gig by a mile. With the class 4, I often can't get it to work properly at all. I having clue why this is though, and nobody seems to have an explanation. Sorry man, just the way things are.
Sent from my HTC HD2 using XDA App

Well, I didn't buy a no name card. Wintec is not a no name brand. They've been around longer than A-Data, Transcend, Patriot. All of those. lol but I see your point.
I'll run Quad n see, but things seem to have improved a little bit after my 3rd reboot. but sometimes it still does it. I'm using smartass governor on SetCPU

If you didn't change anything, then it sure as well be your SD card. If you really want to make sure it's your card, start the entire android build from scratch and see if you still get that same result. if not, then there you go. If yes, then its the card (Assuming everything worked perfectly before you made the copy/paste from your old card to your new one).

Class is not everything. High class only mean high write and read speed to large block transfter, but android need a lot of small block transfter.
You can use ATTO to test your SD's speed. you can find Sandisk's TF will be 10 times faster than Kingstone for small block. but they maybe the same speed for large block.
You can try to buy one Sandisk's mobile ultra micro-sd, it's best SD to run android.

WP7 slower and slower

After 2 days of using wp7 .. Now the phone is slower than the First day
When i get an sms the phone stucks horribly

sounds like Windows alright
not Google, not Linux, not Apple, not something else ?
what were the things you did on your first day? load a bunch of xaps? configured many email accounts?

aras1 said:
After 2 days of using wp7 .. Now the phone is slower than the First day
When i get an sms the phone stucks horribly
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Click to collapse
i was getting the same type of SLOW also. i tried a few different SD cards until it runs as fast and smooth as my HD7. i found that the 16G class 2 card that came with my HD2 works the best. even better than a class 4, 6, or 10. just make sure sure you reset the phone when you replace the sd card. hope this helps.

jase33 said:
i was getting the same type of SLOW also. i tried a few different SD cards until it runs as fast and smooth as my HD7. i found that the 16G class 2 card that came with my HD2 works the best. even better than a class 4, 6, or 10. just make sure sure you reset the phone when you replace the sd card. hope this helps.
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Click to collapse
Yeah, class 2 cards generally have better random access speeds. Card makers general use special tweaks on their cards to get higher write speeds that make the random access speeds slower, which is what wp7 needs to run smooth. Same thing generally when trying to run android from sd... randon access time is most important as the OS is constantly reading small bits of info from various parts of the card. I have had no issues with sandisk class 2 16gb and 32gb cards... but wp7 ran terrible from my class 4 kingston.

wp7 started to get all ****ed up when i unlocked it with chevron and started to mess with the settings and registry. Not to mention all the xaps ive installed lol
im pretty sure its our damn fault. xD
my friends wp7 works like a charm with lots of apps installed but he never unlocked the phone...so i guess that should be it.
anyway mine is strange but its not slower i guess. Hd2 is a badass phone =]

I had this 2 days after installing it on my HD2 but it sorted itself out by the next day and I've now been running it since release with very few issues.
Camera works great since changing the language to English (US) and getting the extra options.
Also, it seems that the problem with the battery could be related to the battery state when WP7 was installed? - http://forum.xda-developers.com/showpost.php?p=10820127&postcount=13

I bought me a new sdcard : Kingston class4 8gb
First it was slow but now it's faster..

It will be fine. Im using the stock class 2 and have not experienced lags, yeah sometimes marketplace did freeze, but i could return to hubs page without any lags. I have bought 3 games and sideloaded another 5, and downloaded bunch of apps from marketplace, and also added about 80 songs in zune. Also I changed my radio to 2.14 and everything seems to be better. The battery life for ex is much better than 2.15.

Slow market with SD card inserted and superfast without

Does any one have the problem?
When I forgot to insert the SD card when flashing WP7, the market downloads were blazing fast. Unfortunately I had to reset the phone with the card in place and after that, now the downloads are crawling.
Do you know why? Any help would be greatly appreciated.
Thanks.

maybe it's because MicroSD memory is usually slower than Nand memroy.
Idk if by upgrading to a higher sdcard class will improve performance, but if u have another memory card around (with has different Class or Brand) why don't you test it with the market apps downloads and come back and tell us if u noticed any changes in performance?

no no no no,
righty, first things first, try reflashing with the SD in, it shouldnt make any difference over a hard reset but its worth the shot.
the reason its slow assuming the above doesnt work is because your SD card isnt compatible, there is some evidance that formatting the SD card in a digital camera has some effect but i think the best performance comes from cards that work from the outset.
note there isnt any list of compatibe cards, DO NOT assume that any card "recomended" by anyone will work.
statistically you have a better chance with a class 2 or 4 card, but that doesnt mean a class 6 or 10 wont work, no brand of card is above this issue, sandisk suffer just as much as the next brand.
in short, its luck if you can get one that works or not, theres nothing else too other than try sticking to class 2 or 4.
oh if your running a class 2 card fine, dont assume a class 4 will be quicker, it might not, it just depends on teh card...and a spot of luck1

Thanks for the reply!
I have the stock sandisk class 2 card that came with the phone. I think it might be similar to when Android was on SD card and the market downloads were really slow too. But after RAM builds and NAND builds came along, the dolwnloads happen blazingly fast.
Anyway, thanks for replying

[Q] WP7 don't support my memory card

I used a sandisk 8gb class 4 when I first installed wp7 but I thought I should make a dual boot and I bought a samsung 32gb class 10 microsdhc.
wp7 couldn't load and I got a message the memory card wasn't compatible...
right now I use android and everything works like a charm but I would love to do that dual boot.
I there anyway to fix that except buying a new card?

format card with SDFormatter v3.0, insert to phone and do hard reset with Volume Up and Down together and power up... maybe not help but you can try...
i use Sandisk 32 gb class 2 and card is very fast and stable under WP7, faster than Sandisk 8g class4 from original HTC 7 Pro device

totaly rad said:
I used a sandisk 8gb class 4 when I first installed wp7 but I thought I should make a dual boot and I bought a samsung 32gb class 10 microsdhc.
wp7 couldn't load and I got a message the memory card wasn't compatible...
right now I use android and everything works like a charm but I would love to do that dual boot.
I there anyway to fix that except buying a new card?
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Click to collapse
There is a huge amount of info out there on what cards to buy, but none of it is 100%, it still might not work, and going for a class 10 card was probably the big mistake, dont get me wrong, some folk have them working, but generally WP7 tends to like class 2/4 and potentially 6 the best, its believed its to do with random access speeds which are usually lower on higher class devices
tthere has been some development with cards that install but sometimes reboot, some small reg tweaks have had a positive effect, but cards that do not work at all is going to be very unlikely to get working. you can format it all you like but the installer will clear all partition tables and set new partitions up, meaning it wont make much if any difference.
ive spent all week looking at new cards, crystal disk mark seems to be a good judge, but if you dig through the net at revews and forums you'll see why its very much hit or miss, the bench marks are all different. Bt the more you look at and the more a given card looks ok, the higher the chances of it working. Ill tell you saturday if mines any good, but i physically couldnt do any more in identifying a working card, so its an educated guess
in answer to your question, no, you need to install WP7 first, then partition it and install SD android, so unless you can get WP working you'll not dual boot them, send the card back, say it wasnt working with your camera or something