Database Users

Why is a Class 6 SD (and a2sd) better?

I have a PNY Class 6 8GB MicroSD for my phone. I was wondering what are the benefits of a2sd, and what are the benefits of a class 6 SD rather than a lower number? I don't currently use a2sd, and wondering if i should.

lower number is slower. iirc, the Hero supports speeds up to class 6, which is faster then the phones ROM
Sent from my HERO200 using the XDA mobile application powered by Tapatalk

abcdfv said:
lower number is slower. iirc, the Hero supports speeds up to class 6, which is faster then the phones ROM
Sent from my HERO200 using the XDA mobile application powered by Tapatalk
Click to expand...
Click to collapse
Ok, that makes sense, but why should I use a2sd? How is it better than storing them on internal memory?

if its a class 6 it will load faster.
Sent from my HERO200 using the XDA mobile application powered by Tapatalk

Ability to have more apps installed, as well as not having to wipe all the applications when you flash a new ROM (although some require you to wipe the ext partition, the ROM chef will tell you if you need to wipe the ext parition (where your apps are stored).
I didn't think I would ever need A2SD until I got to my limit.
I have not noticed a drop in performance opening apps with A2SD on my class 6 card, if there is, its milliseconds.

HeroMeng said:
Ok, that makes sense, but why should I use a2sd? How is it better than storing them on internal memory?
Click to expand...
Click to collapse
A2SD moves all of your installed apps to the SD card. If you have a class 6 card, which have a faster read and write speed than the internal memory in the phone, it makes everything run a lot faster since it doesn't have to run everything from the phone.

sorry to get off topic a bit, but ive been looking for a good class 6 card. the only brand i have seen is a-data i believe for about 20 dollars. im not really looking for something that has a large capacity. in your opinion, which one is better as far as brand? and how much did you pay for your card?

One thing to remember though is that class 6 just means it is certified/guaranteed to transfer at 6MB/sec or faster. A class 2 card can still be as fast or faster than a class 6 and there are some out there that do just this.

jlem26 said:
One thing to remember though is that class 6 just means it is certified/guaranteed to transfer at 6MB/sec or faster. A class 2 card can still be as fast or faster than a class 6 and there are some out there that do just this.
Click to expand...
Click to collapse
This is what I stopped in to say.
+1

kashb91 said:
sorry to get off topic a bit, but ive been looking for a good class 6 card. the only brand i have seen is a-data i believe for about 20 dollars. im not really looking for something that has a large capacity. in your opinion, which one is better as far as brand? and how much did you pay for your card?
Click to expand...
Click to collapse
I wouldn't... every A-Data sdcard I've ever bought has developed bad sectors almost immediately.
Sandisk is the standard, but a class 6 SanDisk is hard to find. The last few I bought were Transcend.

How do you tell what class your card is?

danieledwards1 said:
How do you tell what class your card is?
Click to expand...
Click to collapse
It's on the card itself. It's the letter C with a number inside it. That number is the class number.

posguy99 said:
I wouldn't... every A-Data sdcard I've ever bought has developed bad sectors almost immediately.
Sandisk is the standard, but a class 6 SanDisk is hard to find. The last few I bought were Transcend.
Click to expand...
Click to collapse
thats what ive always been looking for, but as you said its hard to find. if you dont mind me asking how much did you pay for your card and what size is it? also, thanks for the heads up on the a-data card.

I read a review not long ago about sandisk class 2 cards. the tests they ran on them showed they were the equivalent to 10 mb/s. of course you would have to get the right batch number. does anyone know a site that tracks this kind of info?
Sent from my HERO200 using Tapatalk

I have a class 6 Transcend and use app2sd. Just wondering how much memory is it supposed to be freeing up?

gizmosears said:
I have a class 6 Transcend and use app2sd. Just wondering how much memory is it supposed to be freeing up?
Click to expand...
Click to collapse
Depends on how you use a2sd.
If you move dalvik-cache to it as well as your apps it'll be a lot.
But the total amount depends on the number and size of the apps you have installed. I'm sitting with 126/160mb free on Internal Storage.

jlem26 said:
One thing to remember though is that class 6 just means it is certified/guaranteed to transfer at 6MB/sec or faster. A class 2 card can still be as fast or faster than a class 6 and there are some out there that do just this.
Click to expand...
Click to collapse
bobsbobbers said:
This is what I stopped in to say.
+1
Click to expand...
Click to collapse
+2 I have a Class 2 card and I get around ~7+MB/sec, I'm tempted to bump it up to run A2SD more aggressively so that my phone's faster.

i was thinking about buying a class 4 16 gb Sd card.. will this help at all i am not running app2sd..so will the sd card make any difference??
Will it make my screen run smoother and fast on Damage Control 2.8??

xxxk15 said:
i was thinking about buying a class 4 16 gb Sd card.. will this help at all i am not running app2sd..so will the sd card make any difference??
Click to expand...
Click to collapse
If you're not using a2sd it probably won't make much difference either way. If you're thinking of running a2sd later spend the extra 10.00 and get the class 6. regardless of the people talking about their high speed class 2 cards, you'd have to be fairly lucky to get those speeds (as someone else noted, depends on the batch of cards) with class 2, or 4.

an also if i run app2sd if i pull out my memory card at anytime will it mess up my phone??
and i have the 1st class right now so upgrading will make no difference when downloading apps to my phone or anything like that??

32GB MicroSD Card: Can I enable compatibility for NTFS?

I just got my 32gb microSD card (http://tiny.cc/6dkju). I originally formatted it as NTFS so that I can transfer large files. I put it back into my EVO (cyanogen 6 froyo nightly) and it says that the card is blank. I realize that this is because its not Fat32.
My question is that: is there anyway to enable usage/compatibility with NTFS formated microSD cards?
thanks,
mark
also, i did search and couldn't find any concrete answers.

NTFS (NT File System) is a microsoft proprietary format.
No, android will not read NTFS. Format the card in the phone or fat32.

Not much reason to use NTFS, but I woulda thought Android might have support for NTFS-3g

jigglywiggly said:
Not much reason to use NTFS, but I woulda thought Android might have support for NTFS-3g
Click to expand...
Click to collapse
Which in my experience, is buggy as hell.
Stick with FAT for now, or ext3 if you can.
And I swear, if a Mac-humper comes on here and says to format in HFS+, I think I might just lose it.

I tried formatting my card in ext3 through recovery and it didn't seem like it wanted to format the whole card in that format. I suppose you could format it in a linux box that way. My macbook (ahem, lol) won't do that file system, I think. Seems kinda waste of time to install linux in a virtual machine just to format a card. I wonder if the phone would ***** about the entire card being ext3? I'm lazy, so I haven't tried it to see, yet.
Sent from my PC36100 using XDA App

drmacinyasha said:
Which in my experience, is buggy as hell.
Click to expand...
Click to collapse
Don't know when you last tried it... in my experience, Debian does not include "buggy as hell" software in their stable repositories.

jigglywiggly said:
Not much reason to use NTFS.......
Click to expand...
Click to collapse
I tried to load up a 10GB movie file to my EVO to take to my buddy's house and watch through his PS3. I was unable to load a file that large because of the 4GB file size limit of FAT32. I'm just sayin'

by the time you transfer a 10 gig movie file to your phone, the movie will be out on cable!!

oldmanwinter said:
I just got my 32gb microSD card (http://tiny.cc/6dkju). I originally formatted it as NTFS so that I can transfer large files. I put it back into my EVO (cyanogen 6 froyo nightly) and it says that the card is blank. I realize that this is because its not Fat32.
My question is that: is there anyway to enable usage/compatibility with NTFS formated microSD cards?
thanks,
mark
also, i did search and couldn't find any concrete answers.
Click to expand...
Click to collapse
wow, 99 for a non-fishy 32 gig? nice find! EDIT: :-( they were selling it for $49 by accident about two weeks ago. Still $99 is a good deal.

Look for a program called gparted. It's free and supports almost all formats for partitioning etc. Anyway hope that helps.
Sent from my PC36100 using XDA App

so is there any file system that this phone will use that will allow file sizes beyond the 4gb limit of fat32?
edit: whoops, wrong forum/phone.. I'm asking about the epic, not the evo.. I was going to start a thread, but the forum suggested I check out this (and other threads) before I start my own.. very handy feature for those new to the forum :]

32GB SD card issue w/2.3.3 resolved

I recently upgraded my phone to 2.3.3 from 2.1.
After upgrading, my phone no longer detected my 32GB SD.
I spent a lot of time researching the issue and found that most people just went to a smaller card like I did.
I went out and bought a 4GB card.
After loading my phone up with apps and audio and images, 4GB was not enough.
So, here is how I resolved this...
I downloaded HPUSBDisk.exe which is an HP USB format tool.
Copied the content of my 4gb micro to my PC/Laptop.
I inserted my 32GB micro SD into a "micro sd USB adapter"...
Format the SD using the HP USB format tool (FAT).
Copy the contents from the 4GB to the 32GB.
When I placed the 32GB into the phone and powered it up it was now recognized.

weird, I own a 16GB card and never had problems with 2.3.3
actually never heard about this problem until today

a.monteiro said:
weird, I own a 16GB card and never had problems with 2.3.3
actually never heard about this problem until today
Click to expand...
Click to collapse
16 GB are not really a issue.

I use a 32gb from Kingston and have no issues. ??? Think maybe it's not the memory size that is the problem. Maybe it got corrupted? I had that problem on a smaller card on a round of back to stock while playing around with ROMs and such. Formatted it on PC and all was fine... think it was 8? Was a while a go. But I've heard of it happening while updating, read about it after I had the issue with the card that came with my x10.

Deviantelf said:
I use a 32gb from Kingston and have no issues. ??? Think maybe it's not the memory size that is the problem. Maybe it got corrupted? I had that problem on a smaller card on a round of back to stock while playing around with ROMs and such. Formatted it on PC and all was fine... think it was 8? Was a while a go. But I've heard of it happening while updating, read about it after I had the issue with the card that came with my x10.
Click to expand...
Click to collapse
Stock or Custom kernel?

BuLLitz said:
I recently upgraded my phone to 2.3.3 from 2.1.
After upgrading, my phone no longer detected my 32GB SD.
Click to expand...
Click to collapse
1. X10i officially supports cards by a capacity no more than 16 Gb. However, most cards 32 Gb work normally too.
2. A card can be formatted by standard facilities of Windows, it is important only, that a clustersize was 32 Kb

+1 to OP
thank you

verdazil said:
1. X10i officially supports cards by a capacity no more than 16 Gb. However, most cards 32 Gb work normally too.
2. A card can be formatted by standard facilities of Windows, it is important only, that a clustersize was 32 Kb
Click to expand...
Click to collapse
I have an X10a... but whatever.
When I flashed my 32gb SD using Win7, regardless of the cluster size, it would not work in my phone. Period.
I am NOT the only one who has had this problem nor am I the only one who found success in my method.
The 32gb I have in my phone right now, was formatted using the HP Tool at 16kb...
Screw this place... you bunch of pompus jack-wads.

BuLLitz said:
I have an X10a... but whatever.
When I flashed my 32gb SD using Win7, regardless of the cluster size, it would not work in my phone. Period.
I am NOT the only one who has had this problem nor am I the only one who found success in my method.
The 32gb I have in my phone right now, was formatted using the HP Tool at 16kb...
Click to expand...
Click to collapse
I can see some merit to your argument, i use HP Tool myself.
It's way more elegant for this kind of stuff.
BuLLitz said:
Screw this place... you bunch of pompus jack-wads.
Click to expand...
Click to collapse
Was it required?

BuLLitz said:
I have an X10a... but whatever.
When I flashed my 32gb SD using Win7, regardless of the cluster size, it would not work in my phone. Period.
I am NOT the only one who has had this problem nor am I the only one who found success in my method.
The 32gb I have in my phone right now, was formatted using the HP Tool at 16kb...
Screw this place... you bunch of pompus jack-wads.
Click to expand...
Click to collapse
you made him cry, you guys are just so mean

Jedidiah55 said:
you made him cry, you guys are just so mean
Click to expand...
Click to collapse
I quoted the wrong post LOL.
I didn't have any 'thanks' on me at the time.
No one should have to feel threatened or treated badly enough to leave xda.
it's not right.

verdazil said:
1. X10i officially supports cards by a capacity no more than 16 Gb. However, most cards 32 Gb work normally too.
2. A card can be formatted by standard facilities of Windows, it is important only, that a clustersize was 32 Kb
Click to expand...
Click to collapse
FYI:
"Memory Phone memory up to 1GB
microSD™ up to 32GB, 2GB included"
(obviously the original specs, mine came with 8GB)
From Sony's specification page for the phone found here:
http://www.sonyericsson.com/cws/pro...10us?cc=us&lc=en#view=features_specifications
Then in the bottom right click on View the Xperia x10 specifications.

Deviantelf said:
FYI:
"Memory Phone memory up to 1GB
microSD™ up to 32GB, 2GB included"
(obviously the original specs, mine came with 8GB)
From Sony's specification page for the phone found here:
http://www.sonyericsson.com/cws/pro...10us?cc=us&lc=en#view=features_specifications
Then in the bottom right click on View the Xperia x10 specifications.
Click to expand...
Click to collapse
Yes but quite a few cards seem to have bad compatibility.

I'm curious if it's a certain class of cards that cause issues, or if it's certain vendors or brands? Do certain brands format them different and that causes the issue?
I researched what class was supported and bought a brand name (Kingston) that isn't high end but from a reputable business so I knew it wasn't fake. Bought a 32gb class 4 Kingston from Tiger Direct, popped it in and it worked fine. I put it in and tried it before transferring data to it.
I'm definitely not discounting the issue, but finding out WHY the issue is there is what I'm curious about.

i heard SDHC work the best but i'm idk the difference really, all i care about is the memory on the card

Deviantelf said:
I'm curious if it's a certain class of cards that cause issues, or if it's certain vendors or brands? Do certain brands format them different and that causes the issue?
I researched what class was supported and bought a brand name (Kingston) that isn't high end but from a reputable business so I knew it wasn't fake. Bought a 32gb class 4 Kingston from Tiger Direct, popped it in and it worked fine. I put it in and tried it before transferring data to it.
I'm definitely not discounting the issue, but finding out WHY the issue is there is what I'm curious about.
Click to expand...
Click to collapse
MY 16GB class 4 & 32GB class 6 KINGSTON both worked very well with no issue's.

Having the same problem!
I just upgraded my X10a to 2.3.3 and it's not detecting my 8gb SD card, I re-intalled the 2.1 android and the card worked fine, then I upgraded it again to 2.3.3 and formated the card, didn't work... I don't know what to do now!

Having a similar problem!
Hi, I've been having a problem with mi 8GB SD card, the thing is that I just Upgraded my X10 to 2.3.3, but it's not detecting the micro SD, it was working fine till I did the upgrade, so I took the card and plug it into the PC, it is working, then I tried changing the fortmat, didn't work either, so I changed it back to Android 2.1 and It got it working again, I tried one more time to upgrade to Android 2.3.3 and the problem persists, all the apps and features are working just fine, but the phone it's kinda useless without the microSD...
Anyone that knows what the problem might be, please reply, cuase it's very frustrating!!

khuzuco said:
Hi, I've been having a problem with mi 8GB SD card, the thing is that I just Upgraded my X10 to 2.3.3, but it's not detecting the micro SD, it was working fine till I did the upgrade, so I took the card and plug it into the PC, it is working, then I tried changing the fortmat, didn't work either, so I changed it back to Android 2.1 and It got it working again, I tried one more time to upgrade to Android 2.3.3 and the problem persists, all the apps and features are working just fine, but the phone it's kinda useless without the microSD...
Anyone that knows what the problem might be, please reply, cuase it's very frustrating!!
Click to expand...
Click to collapse
The stock 8GB card in my x10 died quite fast.
They get scratched underneath easily.

Hate to bump up an old-ish thread. But I came across the following article and the pertinent quote from it is "We tested this card on some phones including Motorola Razr and Samsung Galaxy S2 and even on a year old Sony Ericsson Xperia X10 and it works fine"
So it looks like this old dog was still able to use a 64GB micro sdxc card.
But at 110$ USD (cheapest I've found so far)... might not be worth it yet.

Inner-SD installation the risky way..

Hello Dell streakers.. I am planing to buy a used streak and was going thru various threads for streak development and stumbled upon a theard about upgrading streaks inner-SD from 2gb to 4gb. And then i searched youtube for any video regarding the same and found this video.
http://www.youtube.com/watch?v=6w4AbtIGp8A&feature=youtube_gdata_player
Is it realy safe to install inner sd like its done in the above video? Also i have two 16gb sd cards so is it possible to install both in this this device? Or maybe one 64gb card?Just curious...
Sent from my HTC Sensation Z710e using XDA App

That's one of the common ways to do it, if the video does what I think it does (only watched a couple seconds)
Method 1: Cut away the plastic covering the innersd, as there isnt that much
Method 2: Completely disassemble/reassemble the device, which is a huge amount of work.
Method 2 also must be repeated every swap, method 1 doesnt, but is a permenent change.
I know the S5 will accept a 4/8gb one without much issue.
16/32gb I dont recall, they may have issues.
A 64 one would be an SDXC, can you see the entire card in SDHC compability mode?

the answer is YES, is safe to install another card. I use the same method like in the video and i replace the card with 8gb class 10 from Kingstone.

Did in half an hour or so with the disassembly method upgraded to 8 Gb with 6Gb remaining internal memory. Get a 8Gb class 10. Mine is a trancend ultimate. Tried a kingston 16Gb class10 but the phone didn't recognize it. Perhaps the transcend 16 will work as well as 8Gb version. Mind you the phone does a fscheck on startup so the larger the card is the longer it takes to start up. It took about 30% more time for the 8Gb to start up as it did with the 4Gb class4 stock card from sony.
Grts.
Z.
Sent from my TAB410 using XDA App

You need to do something to the card to get it to accept more than 8 gigs, though I don't remember what. It is perfectly safe. A hell of a lot safer than taking the entire phone apart, risking ESD, etc. Though, my cut wasn't as clean as that. Lol.

Allright!!
Seems like this method actually feels less risky then opening the whole phone apart.. I remember how i messed up my sony vaio ux while upgrading the internal 32gb HDD with 128gb HDD..
Allright then.. btw i found information about how to enable innersd more then 8gb. Theres some sort of script and editing in boot file.
Thanks for the responses guys..

Zathros said:
Did in half an hour or so with the disassembly method upgraded to 8 Gb with 6Gb remaining internal memory. Get a 8Gb class 10. Mine is a trancend ultimate. Tried a kingston 16Gb class10 but the phone didn't recognize it. Perhaps the transcend 16 will work as well as 8Gb version. Mind you the phone does a fscheck on startup so the larger the card is the longer it takes to start up. It took about 30% more time for the 8Gb to start up as it did with the 4Gb class4 stock card from sony.
Grts.
Z.
Sent from my TAB410 using XDA App
Click to expand...
Click to collapse
Me too. I was actually more worried that I'd slip with the knife and ruin the phone. It was dead simple to disassemble the Streak - I went slowly and carefully the first time, but in the end, it was simple.

the question is : does it makes you're streak faster to or is it just more storage?

kasperke said:
the question is : does it makes you're streak faster to or is it just more storage?
Click to expand...
Click to collapse
It gave me more storage, and actually slowed down my Streak. Trying both a 4gb and 8gb card, I ended up with a lot of pauses and slowdowns just doing basic operations with my Streak. It was nice to have the extra space, but it made the phone way less usable.
I went back to the stock card.

I put in a Sandisk 8gig class 4 sd card and the streak feels snappier than before. The stock sd card is a 2gig class 4 card.
Sent from my MB860 using xda premium

its much easier to open and replace the inner sd, i have just put an 4g kingston hc4 card and everything is ok i will try an 8g tomorrow

using that step...i broken my innersd :crying:
now im waiting for new innersd

zane19775 said:
using that step...i broken my innersd :crying:
now im waiting for new innersd
Click to expand...
Click to collapse
Opening the Streak up? I did that a couple times, I'm not sure how you'd break the inner SD card doing that.
I got fed up with it though and finally just cut the plastic. It was a little nerveracking, but I managed not to damage anything (just some scratches on the outside of the original inner SD card). 8gig CL10 and I'm laughing now, everything seems to work fine.

im using assembling /disassembling ( tear down the streak ) to replace my innerSD.
using 4GB class 6 now. it can use more than 8GB (like 16 or 32 or higher)
but you need to copy your old inner to the new one and resize the partition.
after that, it would work like a charm. you no need to re-install your ROM

chdude3 said:
Opening the Streak up? I did that a couple times, I'm not sure how you'd break the inner SD card doing that.
I got fed up with it though and finally just cut the plastic. It was a little nerveracking, but I managed not to damage anything (just some scratches on the outside of the original inner SD card). 8gig CL10 and I'm laughing now, everything seems to work fine.
Click to expand...
Click to collapse
it's because I cut it a little overwhelming...and my old innersd is broken
but at least I've got new innersd : 4gb class4 (lol) :silly:
[email protected] said:
im using assembling /disassembling ( tear down the streak ) to replace my innerSD.
using 4GB class 6 now. it can use more than 8GB (like 16 or 32 or higher)
but you need to copy your old inner to the new one and resize the partition.
after that, it would work like a charm. you no need to re-install your ROM
Click to expand...
Click to collapse
because I have damaged my old innersd...i re-install my ROM and everything is find

Ide like more info on getting a 16gb or bigger to work. . . . . And what is that script to run on copied to new sd.
Also. . . . I wonder if a 64gb would work if it was formated first in fat32,instead of exfat. . . . . I read somewhere on a sammy forum for the note 2,that there was a special process some used to get their 64gb cards to work
posted from my Pimped out Dell

mokokawi said:
Ide like more info on getting a 16gb or bigger to work. . . . . And what is that script to run on copied to new sd.
Also. . . . I wonder if a 64gb would work if it was formated first in fat32,instead of exfat. . . . . I read somewhere on a sammy forum for the note 2,that there was a special process some used to get their 64gb cards to work
posted from my Pimped out Dell
Click to expand...
Click to collapse
copy your old inner partition to the new one using free software that you can find with googling. i use minitoolpartitionwizard for this things.
after that you must enlarge the partition on your new inner (the copied data/partition that you must enlarge) using partition tools hirenbootCD (i use ver10)
then insert your new inner sd and try..
for DSC ROM if i am not wrong it only support max 16GB. but theoretically it can be no limit.

try my method... check the signature (no need googling )... 64gb is possible but sorry.. no fat32 supports right now...

SDhc problem.

Hello!
I just got my new SD HC (32Gb) card for my htc HD2 device, but im getting weird crashes when i just put some Gb of for example music. It deletes some of it, or changes it to thousands of 0byte weird files..
Can someone help?
/card wasnt expensive and its not Kingston or so./

ZathuraPL said:
Hello!
I just got my new SD HC (32Gb) card for my htc HD2 device, but im getting weird crashes when i just put some Gb of for example music. It deletes some of it, or changes it to thousands of 0byte weird files..
Can someone help?
/card wasnt expensive and its not Kingston or so./
Click to expand...
Click to collapse
I'm really not certain about this, but their a limit on the size SD card our hd2's can support. (Either 16 or 32gb which is what I'm uncertain of) try formatting your new SD card into two 16 gb partitions and then see what happens.
Hopefully either that helps or someone with more knowledge than I will comment and give you a better answer
Sent from my HTC HD2 using xda premium

kylew1212 said:
I'm really not certain about this, but their a limit on the size SD card our hd2's can support. (Either 16 or 32gb which is what I'm uncertain of) try formatting your new SD card into two 16 gb partitions and then see what happens.
Hopefully either that helps or someone with more knowledge than I will comment and give you a better answer
Sent from my HTC HD2 using xda premium
Click to expand...
Click to collapse
Well the limit is definitely not 16gb because I have one of those and it works fine in Android but it for some reason cannot boot SD Android. Also, if I'm not mistaken MarkAtHome (I've seen him in many of the NAND threads, especially NexusHD2) has a 64GB SDXC card as he was posting something about that a while ago. He'd have to confirm though.
Sent from my NexusHD2 using XDA

ZathuraPL said:
Hello!
I just got my new SD HC (32Gb) card for my htc HD2 device, but im getting weird crashes when i just put some Gb of for example music. It deletes some of it, or changes it to thousands of 0byte weird files..
Can someone help?
/card wasnt expensive and its not Kingston or so./
Click to expand...
Click to collapse
Where did you get your memory card?? You son are a victim of false advertisement. I purposely purchased a "cheap" 16GB sd card from ebay and it wasnt even bigger than like 300MB. There are ways to fake the memory size, and thats why when you try to put the music on your card is says its not there because there truly isnt any physical memory available. And also why it gives those weird readouts. Sorry to bust the news :/
kylew1212 said:
I'm really not certain about this, but their a limit on the size SD card our hd2's can support. (Either 16 or 32gb which is what I'm uncertain of) try formatting your new SD card into two 16 gb partitions and then see what happens.
Hopefully either that helps or someone with more knowledge than I will comment and give you a better answer
Sent from my HTC HD2 using xda premium
Click to expand...
Click to collapse
According to HTC's website, the HD2 can support up to a 32GB SDHC (class 10 i believe)

elesbb said:
According to HTC's website, the HD2 can support up to a 32GB SDHC (class 10 i believe)
Click to expand...
Click to collapse
People have used 64gb that also works

hengsheng120 said:
People have used 64gb that also works
Click to expand...
Click to collapse
Yes. You set up two partitions 32 gb each.
Sent from my HTC HD2 using xda premium

There have been threads discussing how certain sd cards do not perform well in android devices, including the HD2. It has to do with some of the access times the cards are rated at.
I have tested a 32gb patriot class 10 card in the HD2 and samsung vibrant that made both phones freeze and run terribly slow until the card was removed.
Sandisk cards run flawlessly in the HD2 and I have only been using them for the past year, including a 32gb and a 64gb SDXC. The 64gb must be formatted as fat32 inside the phone before it can be used, but the full 64gb is available.

ZathuraPL said:
Hello!
I just got my new SD HC (32Gb) card for my htc HD2 device, but im getting weird crashes when i just put some Gb of for example music. It deletes some of it, or changes it to thousands of 0byte weird files..
Can someone help?
/card wasnt expensive and its not Kingston or so./
Click to expand...
Click to collapse
I agree with elesbb. Infact the same thing had happened to me about 4 years ago. What they do it put a memory hack in the SD card fooling it to think there is more memory. I would say if you bought it from ebay contact the seller first and
tell them you think it might be fake and you wish to get a real card asap. If they don't send you one or sound like they may be un-willing to then you should report them. Here's some information found on ebay's site about fake memory cards.
If you bought it from a different online seller you should still contact them about it and say you did some research and believe you recieved a counterfit item. In the link i shared above there are a few examples of how to spot fake cards including some pictures if you go through the links. I've read somewhere that if you have a sandisk and the class rating is in the corner then you more then likly have a counterfit one. Sandisk's class ratings should be centered in the middle of the SD card.

Okay, i've just sent email to him, hopefully he will just re-send me new, (working..?) or give money back!