Develop Bugs

MicroSD Card storage problems

I have installed Maverick on my Desire and I’m having problems copying files over to the SD card. I have made a map of my local area and there are over 200,000 files. When I copy the files from my hard disk to the 8gb microsd card I purchased the files inflate to a ridiculous size. I have listed the size the files take up on both the hard disk and microsd card. I know fat 32 and ntfs handle files differently, but surely the file size shouldn’t inflate that much.
Hard disk (NTFS)
Size 357 MB (374,469,968 bytes)
Size on disk 1.12 GB (1,213,493,248 bytes)
272,945 files 1,088 folders
8gb Microsd (FAT 32)
Size 308 MB (323,536,998 bytes)
Size on disk 6.94 GB (7,454,392,320 bytes)`
227,490 files 972 folders
I ran out of room on the microsd card by the way.
Any help would be appreciated.
Daryl

8gb sd card actual size?

I partitioned my 8gb card before so I could use apsd and I don't use it anymore so I formatted my card and it still only tells me there's 6700 mb available.. I know some of the card will be taken up with software to make the card work but I didn't think it would be a gig.. did I format the card wrong?

if not the whole reason, most of the reason is that when the manufacturer makes their claim of 8GB, they are using the formula of 1000B being 1KB, 1000KB being 1MB, 1000MB being 1 GB, then when systems read the card, 1024B is 1KB, 1024KB is 1MB, 1024MB is 1GB...
so if the card is 8000000 Bytes claimed by the manuf. then 8000000/1024/1024 should be 7.6 gigs
my 8gig card shows 7.39 in my phone, so maybe the OS reserved 200MB for something?

maddmatt02 said:
if not the whole reason, most of the reason is that when the manufacturer makes their claim of 8GB, they are using the formula of 1000B being 1KB, 1000KB being 1MB, 1000MB being 1 GB, then when systems read the card, 1024B is 1KB, 1024KB is 1MB, 1024MB is 1GB...
so if the card is 8000000 Bytes claimed by the manuf. then 8000000/1024/1024 should be 7.6 gigs
my 8gig card shows 7.39 in my phone, so maybe the OS reserved 200MB for something?
Click to expand...
Click to collapse
If you partitioned your SD card for a2sd reformatting won't give you back the whole card. You need to repartition and select 0 for swap, 0 for ext and 'the rest' for FAT. That will repartition it into something your phone (and Windows/Mac/etc) can see and give you back the full available space.

[Q] MicroSD format for performance ?

OK, I got a class10 micro SD....tried some speed checks after formatting in Windows 7 64bit, using the SD card formatter, and using the phone.
For consistency, I formatted to fat32 and set the block size from default to the largest 64KB size.
Was copying files in Windows from the hard drive (7200speed 16mb cache drive) to the SD card and it never got over 4mb/sec, and usually stuck at 3mb a sec. I have a second class 10 card, but havent messed with it yet to see if it was a bad card or not. I ran a sd card test using the J card test app on the market and when I set it to the 8k size test, I saw 13mb/sec test, but the app said every time it couldnt write to cache, so I didnt know if it could be trusted.
I was just wondering how people were formatting their cards - via phone, windows, etc - and what level they found was the best for performance for class 6+ cards.

Mee too,i read that 32kb allocation is best.Would formating sdcard using Ext4 be faster then fat32/nfs?

I didnt know if I should be smaller (instead of 64 of 32k) since most of the files that we run are smaller ?? maybe it would run faster, I dunno....
also from what i read, ntfs isnt supported in android....right ?

I would be interested in this as well. I have a 16GB class 6 card in my Epic, and depending on the CPU clock speed governor I use I sometime get errors recording HD video ay 720p saying my card doesn't support it. If I put the governor to ondemand it works well though.
I'll try some testing with the Jcard app to see what I'm getting speed wise. I formatted my chip on Win7 default settings. When I was copying my files to it in Win7 I was getting 7 - 9 MB/s speeds. That was with the integrated SD card reader on my laptop.

I did some testing on my Team 16GB Micro SDHC I bought on newegg a while back, its a class 6 chip. I think it matters a lot what program you use to test. I did not find a j card app on the market but I used two that I found called "SD Tools" and "SDCardTester". Wildly divergent results below:
SD Tools:
Write Speed: 13.6 MB/s
Read Speed: 17.4 MB/s
SDCardTester:
Write Speed: 6.32 MB/s
Read Speed: 6.14 MB/s
This card is formatted with the standard 32 KB sectors.
---------- Post added at 11:48 PM ---------- Previous post was at 11:41 PM ----------
By the way, in general larger sectors should make for better performance, but the trade off is that you lose some storage. This is because the smallest amount of storage that can be allocated is going to be one sector. So if your sectors are 64 KB and you write a 8KB file, it will take the whole sector and even though there is only 8KB of data 64KB of space on the chip is used. In Windows, when you look at the properties for a folder, this is why there is a difference between "Size:" and "Size on Disk:" values.
Larger block sizes are generally better because there are fewer reads and writes to the device when saving a large file. For instance if you save a 1MB file on a 64 KB sector FS it needs to write to 16 different sectors, if you save the same file in a 8KB sector file system it needs to write to 128 different sectors.

[Q] How to understand the result of H2testw

Excuse me,
I have bought Sandisk Micro SDHC, 32GB, class 10.
With the adaptor to SD Card (included), the H2test say; Error.
there is file *.h2w , on card, it mean not in writte protected mode.
So, i use Micro card reader, the first test:is:
The media is likely to be defective.
29.6 GByte OK (62237560 sectors)
34.5 MByte DATA LOST (70792 sectors)
Details:11.8 MByte overwritten (24288 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
22.7 MByte corrupted (46504 sectors)
11.8 MByte aliased memory (24288 sectors)
First error at offset: 0x00000000ee904000
Expected: 0x00000000ee904000
Found: 0x00000003ee904000
H2testw version 1.3
Writing speed: 3.96 MByte/s
Reading speed: 16.5 MByte/s
H2testw v1.4
Click to expand...
Click to collapse
I format with:
https://www.sdcard.org/downloads/formatter_3/
and tes again, the result is:
The media is likely to be defective.
29.6 GByte OK (62266396 sectors)
20.4 MByte DATA LOST (41956 sectors)
Details:20.4 MByte overwritten (41956 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
0 KByte corrupted (0 sectors)
20.4 MByte aliased memory (41956 sectors)
First error at offset: 0x0000000153404000
Expected: 0x0000000153404000
Found: 0x000000039340c000
H2testw version 1.3
Writing speed: 4.74 MByte/s
Reading speed: 16.7 MByte/s
H2testw v1.4
Click to expand...
Click to collapse
What does it means?
***
I Insert to SGSII, with app: SD Tools, it says :
write speed: 9.1 MByte/s
Read speed : 20.7 MByte/s
Please advise me, must I retour this Micro SDHC ?
Thanks

help.....

That means its ok.
If they say 1000mb tested and 800mb lost, it means that the actual capacity is 200mb. Hence, your micro sd card seems to have the standard 32gb capacity
HOWEVER, you were scammed. Class 10 sd cards should not have "Writing speed: 4.74 MB" It should be around 10MB
So yes, you should 'retour' your sd card. If you used paypal, I think you can get a full refund without having to send back anything as this is obviously a counterfeit item.

lambstone said:
That means its ok.
If they say 1000mb tested and 800mb lost, it means that the actual capacity is 200mb. Hence, your micro sd card seems to have the standard 32gb capacity
HOWEVER, you were scammed. Class 10 sd cards should not have "Writing speed: 4.74 MB" It should be around 10MB
So yes, you should 'retour' your sd card. If you used paypal, I think you can get a full refund without having to send back anything as this is obviously a counterfeit item.
Click to expand...
Click to collapse
I understand, it is 32 GB.
And I have register the serial number to :
http://www.sandisk.com/
and no problem, they said: in warranty.
and test in my Samsung galaxy SII, with "SD Tools",
I Insert to SGSII, with app: SD Tools, it says :
write speed: 9.1 MByte/s
Read speed : 20.7 MByte/s
Click to expand...
Click to collapse
I think the different speed may be because the Sandisk MIcroSDHC card reader, my Netbook (MSI U230, Windows XP SP2) or some thing else that may be not compatible with SDHC card.
because, in first test, i use the Adaptor to SD, insert to SD card slot in my Netbook: The H2testw said: Error. But with explorer, i can copy file to the card.
Then, i use Sandisk MicroSDHC card reader, insert to USB port in my netbook. And the H2testw said:
The media is likely to be defective.
29.6 GByte OK (62266396 sectors)
20.4 MByte DATA LOST (41956 sectors)
Details:20.4 MByte overwritten (41956 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
0 KByte corrupted (0 sectors)
20.4 MByte aliased memory (41956 sectors)
First error at offset: 0x0000000153404000
Expected: 0x0000000153404000
Found: 0x000000039340c000
H2testw version 1.3
Writing speed: 4.74 MByte/s
Reading speed: 16.7 MByte/s
H2testw v1.4
Click to expand...
Click to collapse
So, about the size (32 GB) and speed (9.1MByte/s) it is fine.
What I don't understand is that i bold.
Thank you

SD Formatter 3.1 for SD/SDHC/SDXC
This software formats all SD memory cards, SDHC memory cards and SDXC memory cards. SD Formatter provides quick and easy access to the full capabilities of your SD, SDHC and SDXC memory cards.
The SD Formatter was created specifically for memory cards using the SD/SDHC/SDXC standards. It is strongly recommended to use the SD Formatter instead of formatting utilities provided with operating systems that format various types of storage media. Using generic formatting utilities may result in less than optimal performance for your memory cards.
The SD/SDHC/SDXC memory cards have a "Protected Area" on the card for the SD standard's security function. The SD Formatter does not format the "Protected Area". Please use appropriate application software or SD-compatible device that provides SD security function to format the "Protected Area" in the memory card.
Click to expand...
Click to collapse
Is there a related between:
"Protected Area" on the card for the SD standard's security function.
20.4 MByte aliased memory (41956 sectors)
???
PS:
I have tested my 8 GB sandisk MicroSDHC class 4, on the same netbook and micro card reader:
[It is the memory card that i use in my SGSII, has many file, and only have space : 1,8GB ]
Warning: Only 1846 of 7561 MByte tested.
Test finished without errors.
You can now delete the test files *.h2w or verify them again.
Writing speed: 4.58 MByte/s
Reading speed: 12.3 MByte/s
H2testw v1.4
Click to expand...
Click to collapse
it means my netbook, my windows, my Sandisk MicroSDHC card reader is fine.

Tested - ADADTA microsd card
I bought a 32GB ADATA (upgraded) microsd card off Ebay.
It arrived in what looked like it's proper packaging but on the actual microsd card it said 64GB?
I did the test and the results are below - they don't look good.
Is the H2testw always 100% accurate because I don't want to complain to the seller if there is nothing actually wrong.
Thanks

How to gets off write protected the USB with h2testw and now USB is going write protected and can't working. And it can't formatting any one software and other format tools.

Can anyone tell me what this means? I had bought a 512 sd card and tested it on h2testw but do not understand the results, can any of you help me?​Please put this in the simplest terms possible as I'm not very smart lmao
"The media is likely to be defective.
58.5 GByte OK (122699639 sectors)
70.5 GByte DATA LOST (148000905 sectors)
Details:2.2 MByte overwritten (4520 sectors)
0 KByte slightly changed (< 8 bit/sector, 0 sectors)
70.5 GByte corrupted (147996385 sectors)
2.2 MByte aliased memory (4520 sectors)
First error at offset: 0x00000008cd7cb000
Expected: 0x00000008cd7cb000
Found: 0x00000008cd7cb200
H2testw version 1.3"

HTC M10 with samsung 128GB SD card stopped working

I have Samsung's 128GB SD card installed and during installation my HTC asked me if I want to merge the storages to be one storage and I've answered "Yes" so i have a combined internal 32GB and the external 128GB disks.
Yesterday suddenly after exiting the airport (not sure if it has anything todo with it like x-ray or so) the card stopped responding and everything on it including apps are inaccessible, as suggested I've rebooted it and everything was accessible again.
later on during the day the same thing happened and rebooting did not resolve the issue, so I tried to connect the phone to my ubuntu and windows OSes neither was able to detect it, took the SD Card and inserted it into a microSD adapter into my laptop directly windows did not feel it at all where ubuntu detects it correctly (dmesg output):
Code:
[ 1973.117762] scsi 6:0:0:0: Direct-Access SanDisk Ultra Fit 1.00 PQ: 0 ANSI: 6
[ 1973.118265] sd 6:0:0:0: Attached scsi generic sg3 type 0
[ 1973.118869] sd 6:0:0:0: [sdc] 242614272 512-byte logical blocks: (124 GB/116 GiB)
[ 1973.120737] sd 6:0:0:0: [sdc] Write Protect is off
[ 1973.120750] sd 6:0:0:0: [sdc] Mode Sense: 43 00 00 00
[ 1973.121871] sd 6:0:0:0: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 1973.137651] sdc: sdc1
[ 1973.141087] sd 6:0:0:0: [sdc] Attached SCSI removable disk
fdisk -l output:
Code:
Disk /dev/mmcblk0: 119.8 GiB, 128579534848 bytes, 251131904 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 0E47F670-C4DD-476D-BB0E-EB53A31FD907
Device Start End Sectors Size Type
/dev/mmcblk0p1 2048 34815 32768 16M unknown
/dev/mmcblk0p2 34816 251131870 251097055 119.7G unknown
on the phone, I get corrupted status and unable to mount it now (even after rebooting the phone) so I'm trying to rescue the data in any way possible.
Questions: 1- is there a way to mount the partition to copy the data? as you can see the filesystem type is unknown 2- if not any other tool to copy everything to a SanDisk one (seems more durable) while it was a merged storage with the internal storage of the phone? I'm thinking to use dd and see if it works
I'm currently running TestDesk from cgsecurity.org and will try Photorec later but that won't replicate other data and apps.
if you have any specific tools for Android storages especially the merged ones kindly advise to look into them.
Thanks in advance.

Lol, I have exactly the same combination.

Samsung too?

what is the sd card model?

jc8bit said:
what is the sd card model?
Click to expand...
Click to collapse
Samsung 128GB EVO+ microSD XC1 , attached a photo

Too bad, I have working with no problems the 64Gb Samsung PRO model

I've had this same thing happen with 3 different SD Cards (from both Samsung and Sandisk) all while using the merged storage option. There must be some critical hardware or firmware bug that is causing this but I've yet to hear anything about it.
Unfortunately you're SD card is ruined. Best thing to do now is a factory reset and get a new SD card but keep it mounted as external storage.

You guys can fix your SD cards, but it's going to wipe them
Get the SD Memory Card Formatter from here
Choose the Erase option and let it run
It takes quite some time (sometimes a couple of hours), but after running it you'll be able to use your cards again
Then, don't use it as internal storage anymore. That seems to be what's making them go bad from what I'm reading here