Logo

Advertisement

Android :: ARM Directly Read / Write File On Sd Card I/O Without Cache

groups.google.com

I need to directly read/write a file on sd card without cache. I can use "posix_fadvise" to achieve the purpose on Ubuntu I try NDK to make the function call, but it seems disabled on Android How can I do?

View Answers
Very similar questions

Advertisement

Advertisement

General :: Write Only Access To Internal / External SDCard On Kitkat forum.xda-developers.com

I am using a mt6582m device with kitkat 4.4.2 with supersu. I can use root to write to system, data and cache using es file explorer, can also read and write to any sd card, but apps like titanium backup, online android backup, ram expander can't read/write to sd card. Eg.1: ti backup read backups, can do all operation except backup and restore. I had read a lot, changing backup path didn't worked nor any odex file is there. Using v6.1.5.6. Eg. 2: ram expander can create swap file on sd but can read it saying 'not found'. Swap can be used with cache partition. Eg. 3: online nandroid backup says pat not vaild. I had tried, sd fix app, manually editing platform.xml, xposed module to 'handel external storage', change permissions using es file explorer, editing ramdisk. There is storage/sdcard0 and 1 Also mnt/sdcard and mnt/sdcard2 (symlinked) Also mnt/media_rw/sdcard0 and 1 (not readable even in es file explorer)

Connecting Flip Video Camera To The System? discussions.apple.com

I have one of those FLip Ultra HD video recorders. You know, with the "flip" out USB arm to transfer video to your computer.Well, the iPad camera kit comes with those two adapters (the SD card reader and the USB connector). Since the Flip doesn't use SD cards, I'd use the USB connector with the Flip.My question is, will the flip's USB arm connect directly to the ipad adapter? And would I be able to transfer the 720p HD video clips the flip records to the ipad?

Motorola Droid Razr M :: Photos From Cam Direct To SD Card? forums.motorola.com

Is there a way to get the camera to write directly to the DCIM file in the SD card?

Motorola RAZR I Home :: Play Music Cannot Save To SD Card forums.motorola.com

For some reason my text didn't save when I first posted this, so I'll try again: My issue is that Google Play Music seems to save all cached music to the internal memory of the phone, and not the external SD card. Android can see this external SD card fine, and in fact saves any photos to it, so there is an issue with Google Play Music's visitbility of the SD card. with my HTC Desire S, Google Play Music cached to the external SD card no problem.

General :: Phones Support ExFat Or NTFS Out Of Box forum.xda-developers.com

are there any good Android phones that support exFat or NTFS file system on the SD card right out of the box without rooting?

General :: Mounting A Multi-partition Disk Image? superuser.com

I downloaded an raw SD card image that has two partitions. It caused some file system errors when I tried to dd it directly into an SD card. I am not sure if the card is defective or the image. Is there a way to examine this image without writing it to a physical card? Like trying to mount the partitions separately or checking the tables?

Android :: Does Not Create File In One Director But Does In Other? stackoverflow.com

I have a small piece of code that just won't write a file to the SD card on Android I made sure I created the folder CACHE_DIR before. It exists on the SD card, but canWrite() always returns false. This is the path: /mnt/sdcard/Android/data/org.my.app/files/thumbnailcache I can browse the directory /mnt/sdcard/Android/ data/org. my.app/files/thumbnailcache. Here comes the interesting part: When I try to write to /mnt/sdcard/Test/, it succeeds.How is that possible?

Android :: How Do We Write File To SD Card groups.google.com

Today, i tried to read and write file on the android. but it seems that file write mode is only provided for SD card? most of article is asked about SD card written. Is there no way to save data internal side?So when i install the application to real device. then its application installed in SD card or internal space? because we have make it log file from our application for everytime while application run.So, how do we write the file to SD card and specified the absolute path where we saved? to load this file.

General :: SD Card - Unable To Format Or Delete? forum.xda-developers.com

I have an extremely weird SD Card behavior with my Note 2: After deleting files and rebooting, the files reappear. I can't format the SD Card using the Android OS - it goes black screen and requires me to pull out the battery in order to start the device. I removed the SD Card and attached it to my laptop's SD Card slot and tried formatting using Windows 7- the format process completed after ~30-40 minutes, yet the SD Card appeared UNCHANGED! I used multiple SD Card formatting tools, still no dice - they either complain about write protection, that they can't start, they start and stop halfway with an error, you name it. It's like the SD Card has built in protection that keeps the files in it in stasis form, never ever witnessed such a behavior in any storage device. What gives?

MacBook Pro :: Unable To Write On SD Card discussions.apple.com

I have a macbook pro running Leopard 10.5.8 I have several SD cards that when I put into my SD card reader slot on the macbook pro I cannot write, delete or format. I can only read the card. I tried Disk Utility, formatting and partitioning the SD card are greyed out. Same with right-clicking "get info" on the card, I have only read access to all cards. Also the lock is not turned on, on any of the cards.I had a work around where I was copying everything from the card onto my harddrive, then popping the SD card back into my camera and having the camera format the card to erase everything. That worked fine until now I want to install a small program "magic lantern" onto my card for my camera, which i cannot do because i can only "read" the cards. is there a terminal command I can try to format the card so that I can read/write? Info: MacBook Pro (15-inch 2.53 GHz), Mac OS X (10.5.8)

Advertisement

Motorola Atrix 2 :: Losing Files On MicroSD Card? forums.motorola.com

I regularly lose song files on the 32GB MicroSDHC card (Class 10) in my Atrix 2. They disappear without a trace, and without notice of any kind. I've been checking my music directory regularly with a file explorer app, and I've noticed that they tend to disappear whenever minor changes are made to the SD card (mounting/unmounting the card, connecting to my PC, adding new files to the card, revising existing files, etc.). I've tried using different SD cards, different PC connection methods (MotoHelper and USB Mass Storage), but nothing seems to work. Is Android 2.3.5 not reading the card properly? I don't see the point of using an SD card with this phone if I can't guarantee that the files will stay accessible.

Intel Mac :: External Sd Card Reader Not Working? discussions.apple.com

I plugged in my 32 GB sdhc card via an external reader and its contents were deleted by the iMac.  I restarted the computer and tried to read another sd card and the iMac does not even recognize the card and reader.  The power light briefly flashes once.  THis computer has read SD cards for many years without a problem.  Info: iMac, Mac OS X (10.6.8), iMac 4,1

MacBook Pro :: SD Card Reader Is Read Only? discussions.apple.com

I have a few SD cards, but when i plug it into my macbook pro 15 in the card is read only. I am unable to write (i.e. move, delete..) frm the SD card. I've tried the lock at both positions both doesnt work. Also, the cards are fine when read on windows. Info: MacBook Pro (15-inch Early 2011), Mac OS X (10.7.3)

Simultaneous File Read And Write www.xtremevbtalk.com

I would like to explore the possibility of writing code that would allow a file to be written by a graphics card say an avi and by another card simultaneously read from the same file, in a continous loop, much like a cache. I expect to use a count to indicate when and where the file should be read at the tail end of the file as well as when the write should start to overwrite old data to be constantly updated.If writing a cache pgm is ideal then can this be done with a ram disk ? All help appreciated - Jim

BB Curve 83xx :: Can Read SD Card Without Hooking Up Computer forums.crackberry.com

Can I read the SD card without hooking up to the computer

MacBook Pro :: Late 2011 Sd Card Write Extremely Slow discussions.apple.com

I have a Macbook Pro late 2011 all Lion updates applied and want to use the integrated SD Card Reader (which, according to System Profiler is connected directly to the PCIe Bus).   My SD card is a brand new Sandisk Extreme Pro, which is rated for 95MB/sec and 90MB/sec write speed. Reading from the card is quite fast, I get over 88MB/sec. Writing, however, is abysmally slow. I could not get more than 12,6MB/sec write speed (tested via transferring a 4GB ISO Image from/to the internal SSD). The same card on an old USB 2.0 reader connected to an ancient PC gives around 20MB/sec. I did not test it on another device with a fast SD reader yet.  Info: Macbook Pro, Mac OS X (10.7.2)

General :: How Many Storage Units Android OS Have forum.xda-developers.com

How many storage units Android OS have? Including a possible microSD external Card. Internal Storage, internal memory?! Whats the difference and location in file system folders? When an app is installed from market where does it go? In application manager, in most apps there is an option "Move to SD card"... If I have an external micro SD Card and choose this apps option "Move to SD card" where the heck is suppose to going the app or some part of it? (Data? Apk? Cache?) It's not in external microSD Card! So what is "Move to SD Card".

Xperia Pro/Neo/V/L :: Force Apps To The SD Card Without Rooting? talk.sonymobile.com

How To Force Apps to the SD Card Without Rooting on xperia pro, android 2.3.4?

General :: Transferring Files BACK ONTO SD Card From PC (Note 3 Files)? forums.androidcentral.com

My Sandisc 64GB SD card went kaputt last week, it froze at 33GB, luckily the existing files are all ok and I was able to copy all the files onto my PC, however nothing new can be written to it. I've tried formatting with no success. So I copied the files onto the PC and just got a new this time Samsung 64GB micro SD card. Problem I'm having now is that on several attempts it's failed to copy the files back to my SD card (from PC) I've formatted the card in the Note 3..the music files about 4 GB transferred just fine, the problem seems to be with the Pix and Videos. I'm currently trying to copy the DCIM folder back onto the micro sd and it's saying it'll take 6 hours. I have tried: copying from PC to micro SD in the phone via USB copying from PC to micro SD in SD card adapter plugged directly into PC copying from PC to micro SD in USB adapter plugged into PC all results the same

General :: SD Card As Hard Disc Drive In WiFi Network forum.xda-developers.com

i need an app to bring android sd card to wifi network as hard disc drive, without password or port or others.

IMac (Intel) :: Mid 2011 Doesn't Read SD Card? discussions.apple.com

My iMac mid 2011 does not read the SD Card. In 'System Info' the info abou card reading device tells: 'This computer does not have integrated Apple card reading devices' (something like that, my OS is in Russian). Worked great a couple of weeks ago, now I have that issue. Is there a way to fix that without changing my iMac's elements? Info: iMac, OS X Mavericks (10.9), iMac mid 2011

General :: Recovery Mode Doesn't Have Install Zip From SD Card? forum.xda-developers.com

I rooted my phone and wanted to put custom ROM.So had my rom file in my sd card and as well as CWM recovery file. As soon as i go to recovery mode i have these options.I am using samsung galaxy y duos gt-s6102 Reboot system now apply update from sd card wipe data/factory reset wipe cache partition I don't have install .zp from sd card option ?? And when i click apply update from sd card it shows this error : E:failed to mount /sdcard (No such file or directory) E:Can't mount /sdcard Install from sdcard complete

HTC Desire :: Unable To Read / Write To 8GB SD Card androidforums.com

My new HTC desire is unable to read or write to my 8GB SD card which was previously inside my HTC HD touch. Why is this? I've swapped the SD cards around - i.e. the 4 GB SD card which it came shipped with is now inside my HTC HD touch It doesnt have a problem reading or writingto the 4 GB SD card that it came shipped with. I would prefer not to have to format the card

Android :: Write / Read Access To SD Card In Manifest File groups.google.com

Is there a right associated with write/read access to the sd card that needs to be set in the manifest.xml file? I'm currently trying to write to the sd card using a standard FileOutputStream here: FileOutputStream out = new FileOutputStream("/ sdcard/images/"+imageName); bmp.compress(Bitmap.CompressFormat.JPEG, 90, out); But it doesn't seem to be working. It just says the location isn't found, which can happen if there are no permissions to read/write to the location.

Android :: Writing To Internal SD Card stackoverflow.com

Is there any way of accessing the internal SD card on Android devices that have internal flash, internal SD and external SD cards?

Android :: Select A File From Droid Memory To Do Some Action On It? stackoverflow.com

I want to transfer a file into android dev's SD memory and read the file for parsing it. But i don't know how to transfer a file into the emulators SD Card. Also I don't know which api is to be used to browse for the file from the application. This app provides the user to show it where he has kept the file which the app has to parse. Which api does android provide for file management using a UI. Thanks in advance.

Non Apple SD Card Reader Not Working In IOS 4.2.1 discussions.apple.com

I got a cheap non-Apple SD card reader with a dock connector that was compatible with my iPad as an alternative to the official (expensive) Apple camera connection kit on Amazon and it worked fine with iOS3.x. I tried it today for the first time in iOS 4.2.1 and I could not get it to work. It said "this devices requires too much power" just for a simple little SD card from my dSLR camera connected directly through the dock connector via the card reader I bought.Has Apple disabled support for 3rd party SD card readers / camera connection kits? I've read about people having trouble reading CF cards and flash drives via the USB port in the official camera kit in 4.2.1 but I am having trouble reading an SD card directly.I've got one day left to return this to Amazon so any advice would be appreciated. Should I return it now for a refund and save up to get the Apple kit or is this something that can be fixed?

SD Card Reader Says The Card Is Write-protected? www.tomshardware.com

i can't copy or paste any file on sd card because card is write protected

General :: Camera Kit For IPad 3? www.ipadforums.net

If I have read the info about the Camera Kit for iPad 3, you can connect your camera / SD card to upload files to ipad. If I place files (photos ect) on to my SD card from my PC can I still upload them to the iPad via Camera Kit ? or do the files have to come directly from the camera?

Motorola Droid :: Apps Being Installed To MircoSD Card androidforums.com

My original phone kept shutting off and then wouldn't boot into the Android OS, so I took it back to Verizon today and they replaced. They swapped out the SD card from the original phone and put it into the new phone. Here is the interesting part, two of my apps were on the new phone without me having to go to the market and download them again. Shopsavy and Robo defense free were both on the new phone right at the start up of the new phone, leading me to believe that full apps can be installed to the SD card? The only thing I could think of to explain them being back on my phone but not on the SD card would be that part of the program was on the SD card and when it booted up it say the .exe for the program wasn't there so it went out automatically and downloaded them again without me giving the phone permission to do so. I don't think I'll hit the 256 max anyways but considering the concensus is that you can't save the entire app to the SD card I found this interesting.

Samsung Captivate :: SD Card And Phone Internal Storage androidforums.com

When I look at the settings and "SD card and phone storage" option I see the different types of storage. Based on what I see, please verify the following assumptions are correct. The external SD card is obviously the one I added. I assume it can be used to store media files (via USB, direct write on a PC, etc.). I read until Froyo we won't be able to install apps on this card. The internal SD card is what is built into the phone for apps and other things those apps write to the phone. Looks like Google Listen writes to this area (can't make it write to the external SD and not sure why). It appears that the only things writing to there are my camera and of course any music, pics, or videos I load on there directly. Nothing else seems to make use of it. The internal phone storage is for things like the OS and is pretty much off limits. When I go into the "My Files" app on the phone it dumps me into the home directory which happens to be /sdcard. I assume this is the internal SD card? Under that directory it also has "/sd" which appears to be my external SD card. Why would they make it look like "/sd" is a subdirectory of "/sdcard" when it's not?

HTC EVO 4G :: Remount SD Card With Phone On androidforums.com

Something strange is going on here. I've removed and re-seated the SD card but when the phone boots up it says theres a problem and SD will be read only. Settings->Phone/SD storage says read only. Dropbox won't download anything because it cant find the SD card. However, EStrongs File Explorer and Root Explorer say it is read/write. I think this happened because yesterday I put the sd card in my computer and the SD adapter I use automatically goes to 'read only' with a tab on the side when you push it in. I had put some tape on it to prevent that but I suppose it got loose, so I can't modify my SD card till I get home and can fix it with the SD adapter. Unless someone knows of a way to do it in the phone....

KitKat 4.4 :: Camera App That Will Write Photos Directly To SD Card? forums.androidcentral.com

I just got a GPE LG Pad 8.3 and I have not seen an option in the stock camera app to save photos and video to the SD card. Is there any camera app that can write photos and videos to the SD card? It seems like a waste of an SD card if I can't have my photo's and videos go directly to the card.

Intel Mac :: It Is Not Reading SD Card discussions.apple.com

My iMac won't read my SD card. Once I ejected the card it stopped reading SD cards. I updated my system and it read the card, but then once I ejected it it stopped reading cards again. Info: iMac (21.5-inch Mid 2010), Mac OS X (10.7.4)

HTC Desire : Way To Transfer Music Onto Micro SD? androidforums.com

I'm just wondering what people find is the best way to transfer music/files onto the Micro SD? I've tried connecting the phone via USB and also placing the Micro SD into a card reader and connecting directly to the PC that way. However, with both methods I get the same fault. When I place the card back into the phone, or disconnect the USB I get the 'Preparing SD Card' message, followed by 'The SD Card is damaged' with my only option to format the card and start all over again.

Mac Mini :: Upload Files To A SD Card On It? discussions.apple.com

I am trying to upload music files to an sd card in the built-in card reader on my mac mini and when I insert it it tells me that it is read only. I cannot add files to the card. Is there any way to make sd cards writable from the built-in reader?  Info: Mac mini (Mid 2010), Mac OS X (10.7.3)

General :: Swapping External To Internal SD Storage In Gingerbread Phone forum.xda-developers.com

This phone of mine is in Android Gingerbread 2.3.6. The phone is already rooted but without CWM. Here are the significant screenshots that maybe needed (Specs of the Phone, File Explorer structure and path of the SD Card, Internal Storage & SD Card capacities, and Location Path and Size of the vold.fstab): Attached file below is the original untouched "vold.fstab" file from my MyPhone A818 Duo Slim in zip