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[Tutorial] Upgrade your HTC HD7 memory to 32 GB

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dorianmuthig
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Originally Posted by tonictone View Post
Hi,

I've got an asain verion HD7 with 16gb card. The other day it came up saying no card inserted or card damaged. Took card out using this sticky and its def not working, but can't find a replacement card the sticky says I need a sdsdq-032gb-j35, I found on amazon jp but they wont post abroad. Bought a sdsdq-032gb-bulk class 4 but wasn't recognised in phone and also brought a sdsdqm-032gb-b35a and this didn't work. HTC wont tell me the codes for the card and they want 100+ as its not covered under the warranty.
Can anyone tell me where I can get a card from or if there is a way of getting one of the cards I have brought to work. Appreciate any help on this, thanks.
Get any SanDisk card you can get your hands on from a seller with a good return policy. If it works, good, if it doesn't or your phone performs poorly, return it and ask for a replacement. All recently manufactured cards should work just fine though...
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tonictone
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Default memory card pact up can't find replacement

Reply to Dorianmuthig


Is it best to stick to a 16gb as this is the stock size or can I go for 32gb. So the code of the card doesn't matter? its when it was manufactured that counts - is that correct? also does it have to be a class 4 as the old card or can it be any class or is a certain class works better. Is there a code that indicates a new manufactured card. I have already brought 2 so I will see if they will let me return them. Thanks for the quick reply.
 
dorianmuthig
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Quote:
Originally Posted by tonictone View Post
Reply to Dorianmuthig


Is it best to stick to a 16gb as this is the stock size or can I go for 32gb. So the code of the card doesn't matter? its when it was manufactured that counts - is that correct? also does it have to be a class 4 as the old card or can it be any class or is a certain class works better. Is there a code that indicates a new manufactured card. I have already brought 2 so I will see if they will let me return them. Thanks for the quick reply.
No, the code doesn't matter anymore as it only identifies the distribution region. Since the SanDisk/Toshiba fabrication plants are in Japan they usually get newly produced chips first. Some of the then new class 4 cards were marked as class 2 and sent to Europe, then fabrication temporarily switched to 8K NAND which was also used in SD cards (those cards aren't compatible) and everything was marked class 4, then as all NAND manufacturers realized the performance impact of 8K NAND in current commonly 4K flash controller applications they switched back to the "more expensive" 4K fabrication layouts and cards got to class 6 (still sold as class 4), recent cards are sold and marked as class 6, but since I never tested those, I cannot tell you if those work reliably, but they should.
In theory any "compatible" (e.g. fast enough) microSD or microSDHC (but not microSDXC) cards should work, if it is 4K NAND with 64K control block alignment (256K and 512K can also work, but 1024K usually doesn't).

Simply bench the card you got in a PC using CrystalDiskMark 3 and use the 4000MB setting and post what type of card you got plus the benchmark results in this thread (this is no definitive test to assess if a card will work, but you can eliminate cards that would be too slow).
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tonictone
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Quote:
Originally Posted by dorianmuthig View Post
No, the code doesn't matter anymore as it only identifies the distribution region. Since the SanDisk/Toshiba fabrication plants are in Japan they usually get newly produced chips first. Some of the then new class 4 cards were marked as class 2 and sent to Europe, then fabrication temporarily switched to 8K NAND which was also used in SD cards (those cards aren't compatible) and everything was marked class 4, then as all NAND manufacturers realized the performance impact of 8K NAND in current commonly 4K flash controller applications they switched back to the "more expensive" 4K fabrication layouts and cards got to class 6 (still sold as class 4), recent cards are sold and marked as class 6, but since I never tested those, I cannot tell you if those work reliably, but they should.
In theory any "compatible" (e.g. fast enough) microSD or microSDHC (but not microSDXC) cards should work, if it is 4K NAND with 64K control block alignment (256K and 512K can also work, but 1024K usually doesn't).

Simply bench the card you got in a PC using CrystalDiskMark 3 and use the 4000MB setting and post what type of card you got plus the benchmark results in this thread (this is no definitive test to assess if a card will work, but you can eliminate cards that would be too slow).
Ran the test on the 2 cards I brought and results are below,

This card was brought from Ebay serial SDSDQM-032G-B35N

-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 16.879 MB/s
Sequential Write : 4.313 MB/s
Random Read 512KB : 16.466 MB/s
Random Write 512KB : 0.748 MB/s
Random Read 4KB (QD=1) : 2.124 MB/s [ 518.5 IOPS]
Random Write 4KB (QD=1) : 0.525 MB/s [ 128.2 IOPS]
Random Read 4KB (QD=32) : 1.899 MB/s [ 463.6 IOPS]
Random Write 4KB (QD=32) : 1.209 MB/s [ 295.2 IOPS]

Test : 4000 MB [F: 0.0% (0.0/29.7 GB)] (x1)
Date : 2012/05/03 15:40:25
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x86)

2nd card brought from MemoryC.com serial SQSQ-032G-BULK

-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 17.201 MB/s
Sequential Write : 4.332 MB/s
Random Read 512KB : 17.009 MB/s
Random Write 512KB : 0.548 MB/s
Random Read 4KB (QD=1) : 2.412 MB/s [ 588.9 IOPS]
Random Write 4KB (QD=1) : 0.210 MB/s [ 51.2 IOPS]
Random Read 4KB (QD=32) : 2.371 MB/s [ 578.8 IOPS]
Random Write 4KB (QD=32) : 1.269 MB/s [ 309.9 IOPS]

Test : 4000 MB [F: 0.0% (0.0/29.7 GB)] (x1)
Date : 2012/05/03 17:43:42
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x86)

I have had a look would a class 10 card be best to go for as it has a higher read/write than a 2 or 4, also would the red and grey cards work they say they are SDHC1 is this compatible??
 
dorianmuthig
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Quote:
Originally Posted by tonictone View Post
Ran the test on the 2 cards I brought and results are below,

This card was brought from Ebay serial SDSDQM-032G-B35N

-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 16.879 MB/s
Sequential Write : 4.313 MB/s
Random Read 512KB : 16.466 MB/s
Random Write 512KB : 0.748 MB/s
Random Read 4KB (QD=1) : 2.124 MB/s [ 518.5 IOPS]
Random Write 4KB (QD=1) : 0.525 MB/s [ 128.2 IOPS]
Random Read 4KB (QD=32) : 1.899 MB/s [ 463.6 IOPS]
Random Write 4KB (QD=32) : 1.209 MB/s [ 295.2 IOPS]

Test : 4000 MB [F: 0.0% (0.0/29.7 GB)] (x1)
Date : 2012/05/03 15:40:25
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x86)

2nd card brought from MemoryC.com serial SQSQ-032G-BULK

-----------------------------------------------------------------------
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 17.201 MB/s
Sequential Write : 4.332 MB/s
Random Read 512KB : 17.009 MB/s
Random Write 512KB : 0.548 MB/s
Random Read 4KB (QD=1) : 2.412 MB/s [ 588.9 IOPS]
Random Write 4KB (QD=1) : 0.210 MB/s [ 51.2 IOPS]
Random Read 4KB (QD=32) : 2.371 MB/s [ 578.8 IOPS]
Random Write 4KB (QD=32) : 1.269 MB/s [ 309.9 IOPS]

Test : 4000 MB [F: 0.0% (0.0/29.7 GB)] (x1)
Date : 2012/05/03 17:43:42
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x86)

I have had a look would a class 10 card be best to go for as it has a higher read/write than a 2 or 4, also would the red and grey cards work they say they are SDHC1 is this compatible??
The first one could work, but since the 512K random writes aren't the same as the sequential writes the card likely has 1024K or 2048K control blocks which can cause performance problems with Windows Phone. The second card is not suitable, because the 4K random writes appear inconsistent, the card may work, but if it does, you will get poor application performance and a slow phone.
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tonictone
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Just to let you know - neither of these cards worked in the phone thay both came back with 0.0gb in the available memory.

Just ordered a class 10 card which I'm hoping is a newer version of the card as the read/write rates are higher - will post the crystal disk results when I get the card.
 
djadry
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Hi everyone. I put in my HD7 a new SanDisk 16 gb MicroSD card.

I formatted it on startup and all worked fine... till I rebooted the phone. From that moment the phone says the card doesn't work...

What to do?
Samsung Omnia 7 + Dynamics 2.2 - Nokia Lumia 710 + RainbowMod 2.2
Samsung Ativ S WP8.1 Dev Preview - Nokia Lumia 820
 
davalav
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Wait.. Let me get this right.

You stated at the start of the thread, that the Sandisk SDSDQM-032G-B35 class 2 OR class 4 work, as I am in the UK, the asain market card is irrelevent.

Now your saying only class 2 is compatable? I may be having difficulty understanding you, but I am a little confused.

Regards,
 
dorianmuthig
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(Last edited by dorianmuthig; 5th July 2012 at 01:33 AM.) Reason: added comment about SDXC cards and future support
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Originally Posted by davalav View Post
Wait.. Let me get this right.

You stated at the start of the thread, that the Sandisk SDSDQM-032G-B35 class 2 OR class 4 work, as I am in the UK, the asain market card is irrelevent.

Now your saying only class 2 is compatable? I may be having difficulty understanding you, but I am a little confused.

Regards,
If a card works depends on parameters based on which it was manufactured. The model number is no longer relevant as SanDisk/Toshiba fabs have all moved on to newer processes, that are either better than all previous ones or completely incompatible.
Here's what doesn't work with first generation Windows Phones like the HTC HD7 or the Samsung Focus:
  • 8KB sector NAND (this is used to save wafer space, because it reduces addressing circuitry)
  • 256 sector (or higher) block NAND (blocks are the internal NAND address channels inside the flash chip control processor for simultaneous access and determine sequential R/W or NCQ write speeds)
  • SDXC cards (these will work in the future, there is some new HD7 and HD7S hardware batch now, that ships with a newer bootloader which supports them, it is likely this same newer SPL will be part of the HTC vendor update set, when Windows Phone 7.8 is released)
  • Class 10 and higher cards (High Speed Bus I/F)
  • UHS cards (UHS-I Bus I/F)

The only thing you can do, is buy and test a card (class 2,4 or 6), and return it if it doesn't work. You can exclude a lot of cards prematurely by running a benchmark like CrystalDiskMark 3.

On all second generation and newer phones, the internal flash is a soldered on SD/MMC/SDIO NAND chip and cannot be replaced.
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davalav
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Okay... Thanks.

I'll purchase a card today and see what works. Can you post the benching link up please so I can test my card.

Regards,

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