I found some people changing their SD card size from 1 to 3 and from 5 to 8 and many values by many ways, I don't if this things is fake or not ???? and if it is true what is the best way to resize ?? and what is the risk?????
mero832000 said:
I found some people changing their SD card size from 1 to 3 and from 5 to 8 and many values by many ways, I don't if this things is fake or not ???? and if it is true what is the best way to resize ?? and what is the risk?????
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That's completely fake.
Those programs just modify the header nodes of the MMC to display the required fake size.
Even if you set cluster size to 512 bytes for a 32 GB SD card, you won't get 32GB usable space completely.
Related
What are the best parameters to use? What is the optimal cluster size?
Will the cluster size affect performance ?
I have 1 GB new SD Card.
Look at my report...
http://forum.xda-developers.com/viewtopic.php?t=21920&highlight=sd+card+format
Just another approach: I have a card reader with separate slots for micro SD cards and such with the larger housing. Goal: scale up the SD-card from 2 to 16 GB.
So, I put both the 2GB card (from a running HD2) and the new one in separate slots of the reader and fired up Acronis disk director. Then I copied the FAT32 and the Ext3 partition from the 2 GB 'drive' to the 16 GB one, increasing the partition size to 14 GB for the FAT32 partition, 980 MB for the Ext3, and I added about 39 MB as 'Linux swap area'.
All newly created partitions were designated as primary partitions.
The result: A HD2 sunk in deep thoughts. It starts the booting process, then shows the resting blue loop under this wafer pattern plane, and then - nothing more. As exciting as drying oil paint.
Of course, yes, the contents of the original partitions were copied too. The original card had no swap area. I did not yet give it a try without that. Any other proposals or pointers to where I did something terribly wrong? Thanks in advance, and a happy and successful 2012!
Cheers,
The Longkeeler.
i just thought about ROM's made to store memory on SD cards instead of being stored internaly. can anyone explain y it wouldnt work or y anyone hasnt done it yet?
also wanted to add, by doing this change of memory storage it would speed up the system by 50%. it would also be a + for people who play video games on their smart phones Zonia, Inotia, MMO's ect"""
An SD card, or any format of memory card for that matter, can only be used for the storage of data. It behaves like a hard disk. Data on it must be serially 'read' into a main memory buffer, before it can be accessed by your device's processor.
You can't replace 'real' memory with it or try to use it as real memory.
hijack562 said:
doing this change of memory storage it would speed up the system by 50%
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why?
10 characters
so cant you partition a sd card to be used as real memory? or can it be possible to compress real memory?
and why you ask? cuz it would be nice to play games on a smart phone that only comes with 200mb or less memory. but has a fairy decent processor
Too Slow
The reason they don't do that is because SD cards are MUCH slower than memory. the fastest SD cards (Class 10) only transfer data at 10 MB/s. Memory on the other hand transfers data in the range of gigabytes per second. Even if the memory used a very "slow" rate of 1GB/s that is still 100x faster than a SD card is.
really?? a class 10 only reads 10mb per sec?? dam thats slow...but isnt a sd card consider a soild state drive or not?
Take a close look at an SD card. It only has 9 pins on it. In standard mode two of them aren't used, leaving 7. After 1 x Chip Select, 1 x Power, 2 x Ground, and 1 x Clock, that leaves two pins - namely 1 x Data In and 1 x Data Out.
Not a 32 bit data/address bus like an x86 or ARM processor, but a single, one bit wide bus.
A byte of stored data comes out of the Data Out line as 8 bits, one at a time.
Commands to the card, to ask it to retrieve/store the data you want, have to be sent down the Command/Data In line the same way. Data to be written to the card goes in down the same Data In line the same way, again one bit at a time.
Even though the clock rate can, in theory, be wound up to 25Mhz, it is still a tedious process to get data in and out of the thing.
True solid state drives use the SATA interface, a different type of interface, still serial as above, but the clock rates are much, much higher allowing 1.5 to 6.0 GBit/s transfer rates.
Memory cards can be considered solid state drives, just damned slow ones.
Sorry if this isn't directed towards OP but since we are talking about SD cards anyways I thought I'd ask. Any way to tell what class your SD card is? I have a 16GB one so I'm assuming its class 10.
New cards have the class number on the label, as Class n, or as a capital 'C' with the class number in it.
I will install cyanogenmod[02.14.2012]. Before installing that, must i divide the sdcard two part(ext4 and fat32)?
if i don't divide sd card ,can i install app to sd card(can i experience any problem app moving sd card)?
Well, you hould divide sd card for three parts, not two.
fat32, ext4, swap.
Why ? Because phone with swap works much more faster.
how many megabytes are enough for swap and ext4?
and can we divide using MiniTool Partition Wizard Home Edition 7.0 ?
oddo1907 said:
how many megabytes are enough for swap and ext4?
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There is a rule that swap must be two times the size of your physical memory (RAM), so you should set it to 512MB of swap. That's how you have 768MB of virtual memory. The tricky party is that with swap your phone becomes able to run heavier apps which requires more RAM but also since you use SD card instead of ram your phone becomes slower when it's in use of swap.
As for the ext4 partition, I usually set it to ~400MB. But I never manage to even come closer to use all of those 400MB. 50+ apps are arouond 200MB so decision is yours.
Cheers!
additon, how can divide sd card? i used minitool partition home edition.will be this cause any problem?
oddo1907 said:
additon, how can divide sd card? i used minitool partition home edition.will be this cause any problem?
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No problem but it's better to use a memory card reader than to make it with phone in usb.
I tried with phone in usb and I had to pull battery and to retry.
eSu.Matix said:
There is a rule that swap must be two times the size of your physical memory (RAM), so you should set it to 512MB of swap. That's how you have 768MB of virtual memory. The tricky party is that with swap your phone becomes able to run heavier apps which requires more RAM but also since you use SD card instead of ram your phone becomes slower when it's in use of swap.
As for the ext4 partition, I usually set it to ~400MB. But I never manage to even come closer to use all of those 400MB. 50+ apps are arouond 200MB so decision is yours.
Cheers!
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With all new ROMs (CM7 by fjf, Cronos Ginger 1.7, etc) coming in to our phone, are all of them support this swap partition? Thanks.
Hi, I have a 8GB SD card that is formatted in a smartphone and has cluster size of 32 KB. Isn't this too big, shouldn't it be 4 KB? Can this increased cluster size increase the NAND FLASH write amplification and wear the card prematurely?
I am using it in a PC all the time, not in a smartphone any more.
P.S. I have a lot of software installed on this card and changing the cluster size would be tedious...