[Q] SDcard, read "As Disk" real slow - EVO 4G Q&A, Help & Troubleshooting

Ive been connecting my Evo via USB and then selecting "As Disk Drive" to access my SD card on the phone via the computer. The read and write speeds are horrendous this way. Copying a few ~1GB files from the card to the computer im getting 1MB/s.
When i take the card out and put in it an full SD adapter and use a card reader im getting 10MB/s. Why am i seeing a 10x performance outside the phone? Any way to fix this.
PS, this is the stock 8GB microSD card.

I think it has to do with the limit the phone has for reading/writing speed. Like my phone has the same problem if I attempt to copy over 1gb worth of songs for example the wait time be around 23-30 minutes for some reason but soon as i put the sd in a cardreader and plug it into my computer i can tranfer the 1gb file in 2.5minutes.

Can anyone else confirm this is a limitation of the phone? Its a pain to get to the SD card in the Evo, id hate to have to open it every time i need to copy a few things.

I had a problem like this once and I changed kernels and it seemed to be normal again.
Sent from my PC36100 using XDA App

What kernel are u using now?
Sent from my PC36100 using XDA App

Try this:
http://forum.xda-developers.com/showthread.php?t=921530

cruise350 said:
Try this:
http://forum.xda-developers.com/showthread.php?t=921530
Click to expand...
Click to collapse
I read this, looks like a temp fix that has to be applied over and over after restarts. Any easy way to apply a permanent fix?

Was on a savagedzen went back to the cm7 that came with rom. It mayhave been fixed in newer versions but I'm sticking with cm7 stock. Could have also just been a fluke
Sent from my PC36100 using XDA App

So i checked with adb using the following command
Code:
adb shell cat /sys/devices/virtual/bdi/179:0/read_ahead_kb
and it came back 128...so im having this issue even when its set at 128, any suggestions?
Using SD card speed tester i am getting 2 write and 6 read using stock 8GB class 2. This is accurate, however when transferring from phone to computer it is peaking around 1MB/s. Idk where this limitation exists as sticking the card into a reader im getting 10MB/s.

class 10 you can set up to 1024.. ..there's a zip on another thread to have this set always.... even after reboot....
i'm class 10.. 16gb, and i'm running the sd card tweak at 1024... i'm writing at 11./read 16

Related

SDCard Available Space is Incorrect

I am running into an issue with my SDCard.
The card is a 4GB class 4 Sandisk that for a little while had 157mb free. I deleted 1.09gb off of the card and it still says it only has 157mb free for whatever reason (on my computer and on the incredible). I have tried restarting the phone and taking the sdcard out and using a microsd card converter.
I understand that the only thing I can do might be to format, however this isn't the first time I have run into this problem and I want to stop running into this problem.
Anything I can try? I would prefer not to format, but I will if I have too.
Copy the contents of your SD to a computer, and format the SD card to FAT32. See what the does.
Sent from my Xoom using xda premium
So I did that and well now I have 3gb available. My assumption is that everything I deleted kept bogging it down or whatever.
So then the question is, how do I stop it from doing this in the future?
BrettKoster said:
So I did that and well now I have 3gb available. My assumption is that everything I deleted kept bogging it down or whatever.
So then the question is, how do I stop it from doing this in the future?
Click to expand...
Click to collapse
I would wait and see if it happens again. I've never had that issue, and it's the first I've heard of it. I would recommend another SD card at that point.
Sent from my ADR6300 using xda premium

[Q] broken / corrupt picture files when saving to miscroSD

I got a Patriot class 4 microSD card from Newegg for the t989. I've been annoyed by the fact that if I use the stock Camera app and choose to save to SD card directly, random pictures either do not get saved, or existing pictures gets corrupted (i.e., gallery items show a broken picture icon and the files become unreadable even using an external card reader).
SD Tool shows the read/write speed is as claimed (Class 4). Also using h2testw and an external card reader does not show anything abnormal.
What could I be doing wrong? Should I have gotten a class 10 if I want to save pictures onto the SD card?
freexdanoob said:
I got a Patriot class 4 microSD card from Newegg for the t989. I've been annoyed by the fact that if I use the stock Camera app and choose to save to SD card directly, random pictures either do not get saved, or existing pictures gets corrupted (i.e., gallery items show a broken picture icon and the files become unreadable even using an external card reader).
SD Tool shows the read/write speed is as claimed (Class 4). Also using h2testw and an external card reader does not show anything abnormal.
What could I be doing wrong? Should I have gotten a class 10 if I want to save pictures onto the SD card?
Click to expand...
Click to collapse
Take all the crap off your sd card and format from the phone, and try again
Also this belongs 9n Q&A section
Thanks... I did that but still happens. I was wondering whether the speed is not good enough because it usually happens when I try to take several pictures within a few minutes...
freexdanoob said:
Thanks... I did that but still happens. I was wondering whether the speed is not good enough because it usually happens when I try to take several pictures within a few minutes...
Click to expand...
Click to collapse
It's not a problem with the speed.probably just a bad card, btw our phone doesn't fully it'll utilizes the class speed,i think it is only around class 6-8?
Sent from my SGH-T989 using xda premium

Just got a SanDisk Ultra 64 GB microSDXC. Need advice on how to format/treat it.

Hello all, as the title states, i just got a SanDisk Ultra 64 GB microSDXC Class 10 UHS-1 Memory Card 30MB/s with Adapter SDSDQUA-064G-U46A from amazon.com for their black Friday special for $42.
My question is, since I know it's 62gb, it needs to be specially formatted so I can use all of it the right way. Can someone tell me what's the best way in going about this? (Aside from having a note 2, I have a Mac, and little access to a PC, but I can get to one of needed.)
Also, does anyone here have this card? And what are your experiences with it if you do? Many thanks!
Sent from my [email protected]$$ Galaxy Note II using XDA-Developers App.
AirBruce said:
Hello all, as the title states, i just got a SanDisk Ultra 64 GB microSDXC Class 10 UHS-1 Memory Card 30MB/s with Adapter SDSDQUA-064G-U46A from amazon.com for their black Friday special for $42.
My question is, since I know it's 62gb, it needs to be specially formatted so I can use all of it the right way. Can someone tell me what's the best way in going about this? (Aside from having a note 2, I have a Mac, and little access to a PC, but I can get to one of needed.)
Also, does anyone here have this card? And what are your experiences with it if you do? Many thanks!
Sent from my [email protected]$$ Galaxy Note II using XDA-Developers App.
Click to expand...
Click to collapse
I've got one of those. You need a UHS-1 compatible card reader to use it with your computer, otherwise it'll just stop working when you try to access it.
Format it using your phone, and keep in mind that if you go from a stock rom to cyanogenmod or from jb to ics, it will present "SD card may be damaged. You may need to reformat it".
If that happens, boot a linux distro and use fdisk to change the partition type to 0x07, save and quit.
Then reboot into windows, connect the card reader with the card inserted, cancel windows' prompt to format. Open a command prompt and run chkdsk /r x: where x: it the drive letter assigned to it. Allow it to finish and your card will be usable again.
Sent from my GT-I9300 using xda app-developers app
here is what you need for PC(if you can get to one)...this is a simple formatting program that will format the card to fat32 from NTFS...there is a limit of 4gb file size with this format..but it will make the card work with TWRP recovery...
http://code.google.com/p/nusad/downloads/detail?name=FAT32_GUI_Formatter.exe&can=2&q=
on edit...i think you are looking for something other than what i posted...what i have posted will format the card to fat32 making it usable with TWRP...if thats not what you want..ignore this... sorry
I inserted mine to my note 2 as soon as I got it. Never had a single issue with it.
Sent from my SPH-L900 using xda app-developers app
42 bucks????? Dammit how did i miss that deal
Sent from my SPH-L900 using xda premium
I purchased the same one from amazon. Popped it in my GN II and copied my music from PC. No issues so far
Sent from my SPH-L900 using xda premium
---------- Post added at 12:52 AM ---------- Previous post was at 12:49 AM ----------
afgomar said:
42 bucks????? Dammit how did i miss that deal
Sent from my SPH-L900 using xda premium
Click to expand...
Click to collapse
Buy.com had one recently for 37.99. They are trending down in price, so you should have another chance soon
Sent from my SPH-L900 using xda premium
Got that same card from amazon when it was down to $38. Once I got it, I just formatted it with a card reader to exFAT using my pc. Works just fine. Even did the directory bind on it already to move all my games to it plus put a few movies and tv shows on it. Yes its almost full...
But still no errors or problems. And its quick... enough.
Sent from my SPH-L900 using xda app-developers app
I just put it in the phone and had the phone format it.
Sent from my Samsung Galaxy Note 2
Hey guys, just got my gnote 2 a few hours ago, I had an HTC Evo 4g, the sd card in that never gave me any issues, it still has stuff on it, can I just stick that in my new phone?
Sent from my SPH-L900 using xda premium
If you install TWRP version 2.3.1.4 and up, no need to do anything to the card since it comes pre-formated to exFAT and works AWESOME!!!! Just install it through gooManager
that was indeed a nice deal hope u get it all fixed
eurominican said:
If you install TWRP version 2.3.1.4 and up, no need to do anything to the card since it comes pre-formated to exFAT and works AWESOME!!!! Just install it through gooManager
Click to expand...
Click to collapse
im confused. no need to do anything special. what this guy said is truth!
I agree your card should work fine from the Evo 4G.
Assuming you have a PC, I would suggest copying all the content of your SDHC card to the PC. Put the card in the GN2, format the card. Then transfer the contents back to the card.
I don't know what you have on the card, but most likely you won't need everything. Some stuff will be specific to the Evo 4G.
I just came form the Evo 4g too, and this is what I did. The only difference is that I had this card in my Evo 4G instead of that 8GB that came with the Evo.
Thanks to everyone for their reply, but I found a great answer for others on using their 64GB MicroSD card with this problem in the future. I actually found the answer on another thread, but unfortnetly I lost the location.
So this is what you do. You can:
A) when you open the package to the Micro SD card, you can pop it into the phone and it will automatically format it for you.
The problem with this, is that it's going to format it into fat32 file system, but when you try to mount this in your Mac (using the included Micro SD card to SD card adapter), you will not be able to move files to the MicroSD card after mounting the card to the Mac. You'll be able to mount it and read files off the card, but will be unable to move files onto it.
B) You can format the card itself on a Mac or PC using Fat32, but you'll also run into the problem of moving files to the card from the Mac to the card afterwards. (You'll probably be able to do it on a PC, or Mac using a USB cable connected to the phone) but this may prove to be impractical to you.
The option I found works best ESPECIALLY FOR MAC USERS is option C)
C) Pop the Micro SD card into the adaptor, pop the Adapter into your SD Card slot (if using a newer Macbook pro). Wait for it to mount, and then open Disk Utilities and Cick on the Top root of your Newly inserted SD card.
Then click on the Partion tab.-> then Select Partion 1. -> Then enter a name to the right that you would like to Name your card. -> Then select ExFat from the drop down menu right below the Name Card field. Then select format. Viola. All done.
Your Mac will now move files to and from the card using your Mac (or a PC) without compatibility issues, and your phone will also recognize your card and write to it without problems. Any other method may cause compatibility issues when using your MicroSD card.
Hope this helps others out there.
Sent from my [email protected]$$ Galaxy Note II using XDA-Developers App.
that's wierd. OSX and read and write to FAT32. It's one of the more universal file systems in the PC world. FatEx is getting there, but it's not that well support in Windows, yet.
Thanks for the info nonetheless.

[Q] Phone freezes when trying to access photos on ext. SD Card

I have 812 pictures in my Camera album on my external Toshiba 32GB Class 10 SD card. When I first got the phone in December, everything worked great, even after transferring from my EVO 3D. Now, whenever I try to access my stuff on my SD card through the Gallery app, it just freezes. I can hit home and exit the app, but back doesn't work and I cannot scroll anywhere. I can still access pictures via ASTRO and save stuff on to it..I just don't anymore, in case it goes corrupt. Any solutions? I tried searching, but no one seems to have the same problem as me..
Lol. Sounds like a simple cache issue with the gallery. Go to settings, application manager, all apps, find gallery, try clearing cache, and if that doesn't solve the problem, delete data. This will not delete your images. I think it may or may not delete your thumbnails. Just scroll over the images again and a thumbnail is remade. Nothing will harm your photos.
Sent from my SPH-L710 using xda app-developers app
kkarson said:
I have 812 pictures in my Camera album on my external Toshiba 32GB Class 10 SD card. When I first got the phone in December, everything worked great, even after transferring from my EVO 3D. Now, whenever I try to access my stuff on my SD card through the Gallery app, it just freezes. I can hit home and exit the app, but back doesn't work and I cannot scroll anywhere. I can still access pictures via ASTRO and save stuff on to it..I just don't anymore, in case it goes corrupt. Any solutions? I tried searching, but no one seems to have the same problem as me..
Click to expand...
Click to collapse
hmmm... I would normally say that the 800+ images in one gallery might be the cause of the problem. But you say that it was working fine previously. Even then, I'd recommend to split the images into different folders (maybe based on month they were taken) to minimize the amount of thumbnails that gallery has to process and look through.
I'm assuming you've done the MA6 and MB1 updates. Perhaps upgrading the phone to 4.1.2 caused this? I haven't heard of anything similar on XDA, but I'd stick with kkarson's approach and clear cache from the gallery app. Hope that works for ya!
Already tried clearing the cache and data from the Application Manager, but still the same results. I have a folder of old camera photos from my EVO 3D with 1780 photos in it, and it opens and I can view the photos perfectly fine, with no lag or freezing. But when I open the "Camera" folder on the ext. SD card, it just freezes and I have to go back to the home screen. I just upgraded to MB1 today and still the same results..
Sent from my SPH-L710 using xda app-developers app
Maybe there's corrupted files on the SD card causing the phone to choke when it tries to read them. If you have windows 7 or XP you can put the card in your pc, (with a card reader or usb card reader), then right click on the card and choose properties. Select the tools tab in the properties box. The first option is error checking which will scan the disk and fix errors (if fix errors is checked). However, if there are corrupted files on the SD card it might be going bad and should be reformatted.
I have the same issue. I havent found a fix. I even formatted my external SD card.. didnt help.
MadFlava said:
I have the same issue. I havent found a fix. I even formatted my external SD card.. didnt help.
Click to expand...
Click to collapse
No fix. Your Sd card is done. The fix is get a new one.
Also the op likely has Sd card problems and not a phone problem.
EzDuzit said:
No fix. Your Sd card is done. The fix is get a new one.
Also the op likely has Sd card problems and not a phone problem.
Click to expand...
Click to collapse
The card isnt that old and isnt giving any read/write errors.
I guess that could be the case.. its a class 10 Sandisk card.. I would think it would last more than a couple of months.
MadFlava said:
The card isnt that old and isnt giving any read/write errors.
I guess that could be the case.. its a class 10 Sandisk card.. I would think it would last more than a couple of months.
Click to expand...
Click to collapse
Have you benchmarked your read/write speeds to your external sd?
MadFlava said:
The card isnt that old and isnt giving any read/write errors.
I guess that could be the case.. its a class 10 Sandisk card.. I would think it would last more than a couple of months.
Click to expand...
Click to collapse
I'm looking at a Sandisk 32GB class 10 ultra card that I got right after xmas so it's only 3 mopnths old. It started spitting out corrupt files after only 1 month. Eventually I'll get another card. But if my phone ever random restarts, or suddenly locks up, or I notice media is using a lot of battery, I know if I run scan disk on the card it will show errors. It lasts for a few weeks between formats.
There are also tons of posts from people that have had sd card failures on this phone (also with new cards).
Scan of my card after phone acted up.
Uploaded with ImageShack.us
I bought a new class 10 PNY card today. Once I get some pictures on it, I guess we'll see if that was the issue.
Sent from my SPH-L710 using xda premium
MadFlava said:
I bought a new class 10 PNY card today. Once I get some pictures on it, I guess we'll see if that was the issue.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
Dont worry you're not alone, theres a thread in general that had a ton of posts and the thread title was "If your sdcard failed on you, what recovery were you on?"
Many have had to purchase 2 or 3 cards until they got one that didnt go bad or corrupted. If you got the sdcard (the one that failed) very recently, you could call the manufacturer and tell them it failed on you, I'm sure they would send a replacement because I've seen others do it and they got their replacements in a timely manner
CNexus said:
Dont worry you're not alone, theres a thread in general that had a ton of posts and the thread title was "If your sdcard failed on you, what recovery were you on?"
Many have had to purchase 2 or 3 cards until they got one that didnt go bad or corrupted. If you got the sdcard (the one that failed) very recently, you could call the manufacturer and tell them it failed on you, I'm sure they would send a replacement because I've seen others do it and they got their replacements in a timely manner
Click to expand...
Click to collapse
Well, the new card doesnt work any faster than the old card. At this point, Im thinking its not the card.
I guess I'm just gonna have to get a new card....this one is only 6 months old!!
Sent from my SPH-L710 using xda app-developers app
My Verbatim class 10 16gb sd card works just fine on my SGS2 and computer but it freezes like hell the SGS4. i want it in my SGS4 ...any advice please..i formatted and still the same
kremori said:
My Verbatim class 10 16gb sd card works just fine on my SGS2 and computer but it freezes like hell the SGS4. i want it in my SGS4 ...any advice please..i formatted and still the same
Click to expand...
Click to collapse
This isn't the section for the S4.

What's causing my folders to become corrupt on my SD card?

Problem:
I'll connect my phone to my computer and open the SD card (32gb) to view it and several of the folders names have been changed and they all start with a "u" now (see below for example)?? On top of that, everything in those folders is now missing... There is also a new folder called "Lost Dir" with a bunch of files in it with just numbers for names, no extension though. I'll delete the folders and they reappear on the next restart..... So I usually end up reformatting the SD card and it's good for a few days and then does it again.
Example:
Downloads is now uownloads (with a funky symbol next to it)
Data is now uata
TWRP is now uWRP
ect...
This has been happening for a little over a month... with different ROM's, so it's not a ROM issue. Could it be Fast Charge?? Could it be the kernel I'm using as I always use the same kernel?
Anyone else have this problem that could shed some light on it for me? I'd like to figure out what is causing this so I can fix it, or not repeat it.
Thanks, Jason
Sounds like the card is failing, or the controller is.
Try reformatting it in your computer using a USB adapter, not a built in reader. Do a full, not fast, format.
Could also try running Scandisk.
What brand card?
Obviously, trying a different card can sort this out quickly.
Bad card. Is it a 32GB card by chance?
Formatting will only be a temporary solution. Eventuality the errors will pop up again
Sent from my SGH-I747 using Tapatalk 2
Devhux said:
Bad card. Is it a 32GB card by chance?
Formatting will only be a temporary solution. Eventuality the errors will pop up again
Sent from my SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Yeah, 32gb SanDisk.
All signs are pointing to this, I'll probably pick up a new one this week.
Thanks for the replies!
You may be able to have the card replaced for free under warranty.

Categories

Resources