MicroSD cards that work with CM10 for HD+

[curiousmike]

And here are the ones of the one I'm thinking to move to: http://i.imgur.com/X5voM.png (~2Mb/s 4k writes)

What exact card is this? Is it a particular Class 10 Sandisk 16GB?

 

[Stevethegreat]

What exact card is this? Is it a particular Class 10 Sandisk 16GB?

Nope not really, it's one I had for some time now, but I had intermitent instabilities with it (so I was using an 8gig class 4 for cm10). It seems to be the case that sandisk's class 10 cards need to be aligned manually, by doing so it seems that the card is unstable no more....



Anyhow are those good speeds? May I use that card as my daily driver or is my class 4 good enough?

 

[curiousmike]

Anyhow are those good speeds? May I use that card as my daily driver or is my class 4 good enough?

Per this thread,
http://forum.xda-developers.com/showthread.php?t=2032364

Led me to this thread,
http://forum.xda-developers.com/showthread.php?t=1005633

Led me to these results:
https://docs.google.com/spreadsheet/ccc?key=0AjPE3ZAD2eVudE9vZmQ3aHlfTkFvU2J4ZUplRDJQTEE#gid=0

I'd say your card is one of the very best you can get. Nobody has 2KB in their 4KB random writes. Your 4.2KB writes is exception as well.
Like: You have a golden card.

I don't know if that translates into better performance, but I sure as hell want to try, which is why I'm asking: Can you give me the exact details on the manufacturer/type of card it is?

---------- Post added at 11:38 AM ---------- Previous post was at 11:37 AM ----------

Nope not really, it's one I had for some time now, but I had intermitent instabilities with it (so I was using an 8gig class 4 for cm10). It seems to be the case that sandisk's class 10 cards need to be aligned manually, by doing so it seems that the card is unstable no more....



Anyhow are those good speeds? May I use that card as my daily driver or is my class 4 good enough?

What do you mean "need to be aligned manually" ? Is there a post that details what this means and how to do it?

 

[Stevethegreat]

Per this thread,
http://forum.xda-developers.com/showthread.php?t=2032364

Led me to this thread,
http://forum.xda-developers.com/showthread.php?t=1005633

Led me to these results:
https://docs.google.com/spreadsheet/ccc?key=0AjPE3ZAD2eVudE9vZmQ3aHlfTkFvU2J4ZUplRDJQTEE#gid=0

I'd say your card is one of the very best you can get. Nobody has 2KB in their 4KB random writes. Your 4.2KB writes is exception as well.
Like: You have a golden card.

I don't know if that translates into better performance, but I sure as hell want to try, which is why I'm asking: Can you give me the exact details on the manufacturer/type of card it is?

---------- Post added at 11:38 AM ---------- Previous post was at 11:37 AM ----------



What do you mean "need to be aligned manually" ? Is there a post that details what this means and how to do it?

My card is called SanDisk microsdhc 16gb class 10, it comes with the "moniker" "U1" but actually it is no different than a mere class 10 card (which is why most shops call it as such).

But beware this particular model comes with two problems, it seems that quite a number of them are defective (they throw IO errors even though they're brand new) in which case you have to try to replace them, and -also- all of them are not aligned correctly due to verygreen's partition method (after booting the card for the first time into CWM). Lack of 4k alignment (to my experience) led to lower bench speeds and *probably* random reboots (but I cannot be sure about this last one, haven't tested enough). What I did was to reformat using gparted ("MiB" alignment) and put in place the exact same layout as verygreen but this time around 4k-aligned (basically each of my partition's sectors are divisible by 512 after I did that), this leads to greater speeds to SSDs and HDDs and predictably did so in my case as well (at least as far as benchs go).



Now the reason that I'm asking is because I do/did not have the time to install the exact same setup (as the one I'm currently using) from scratch to check the every day feel I'd get from my class 10 card... BTW I do know that my numbers are kinda good but I think there's a good chance that they do not translate as well in every day use. If I had the time I would had done the tests myself, but sadly I don't which is why I kindly ask for your help . Thanks.

 

[someone0]

My card is called SanDisk microsdhc 16gb class 10, it comes with the "moniker" "U1" but actually it is no different than a mere class 10 card (which is why most shops call it as such).

According to the wikipedia:

UHS Speed Class


The Ultra-High Speed (UHS) designation is available on some SDHC and SDXC cards.[44] The following ultra-high speeds are specified:

• UHS-I cards, specified in SD Version 3.01,[41] support a clock frequency of 100 MHz (a quadrupling of the original "Default Speed"), which in four-bit transfer mode could transfer 50 MB/s. UHS-I cards declared as UHS104 also support a clock frequency of 208 MHz, which could transfer 104 MB/s. UHS-I is the only class for which products are currently available.[45]
• Double data rate operation at 50 MHz (DDR50) is also specified in Version 3.01, and is mandatory for microSDHC and microSDXC cards labeled as UHS-I. In this mode, four bits are transferred when the clock signal rises and another four bits when it falls, transferring an entire byte on each full clock cycle.
• UHS-II cards, defined in Version 4.0, further raise the data transfer rate to a theoretical maximum of 312 MB/s.[46][47]

UHS memory cards work best with UHS host devices. The combination lets the user record HD resolution videos to tapeless camcorders while performing other functions. It is also suitable for real-time broadcasts and capturing large HD videos.
Cards that comply with UHS show UHS-I or UHS-II on the label, and report this capability to the host device. Use of UHS requires that the host device command the card to drop from 3.3-volt to 1.8-volt operation and select the 4-bit transfer mode.

Sandisk microSD UHS-I is usually mark as 30MB/s while SD version has higher mark such as 45MB/s and yet they both still consider class 10 speed. I have yet to see UHS-II card though.

 

[Larrondo]

Sandisk Ultra 32 manual 4k alignment

My card is called SanDisk microsdhc 16gb class 10.... Lack of 4k alignment (to my experience) led to lower bench speeds and *probably* random reboots (but I cannot be sure about this last one, haven't tested enough). What I did was to reformat using gparted ("MiB" alignment) and put in place the exact same layout as verygreen but this time around 4k-aligned (basically each of my partition's sectors are divisible by 512 after I did that), .

Idiotic newbie question alert: So it seems that manually aligning the Sandisk Ultra cards fixes their problems. I'm about to buy a card for my wife's HD+ and was hoping to get the 32 Sandisk Ultra. Is the process of doing a manual 4K alignment difficult? I peeked at the gparted website and already am not sure which version I should be using. Thanks in advance.

 

[OyaNET]

Samsung SDHC32GB class 10 working

I have bought a class 10 32GB Samsung branded micro SD.
I works perfect both in original NOOK HD+ and running CM10 also.
4KB Random Write is 2.413 MB/sec in Crystal Disk Mark in USB reader.

 

[Dmitriusan]

I've used Trancsend 32GB class 10 card (TS32GUSDHC10), 25$ for CM 10 installation. No lags or any other problems on HD+.

 

[Droewyn]

Can anyone give me a suggestion on a good adapter/USB reader/whatever they're called? I read that I should use one rather than using the MicroSD slot in my PC, but I have no idea how to find a good one.

Thanks in advance.

 

[leapinlar]

Can anyone give me a suggestion on a good adapter/USB reader/whatever they're called? I read that I should use one rather than using the MicroSD slot in my PC, but I have no idea how to find a good one.

Thanks in advance.

I think any will work. I use a no name that came with my card.

Sent from my Galaxy Tab running Tapatalk

 

[lkmiller]

Can anyone give me a suggestion on a good adapter/USB reader/whatever they're called? I read that I should use one rather than using the MicroSD slot in my PC, but I have no idea how to find a good one.

Thanks in advance.

Have you had trouble using the built-in card reader in your PC? That's what I've used with no problems so far.

 

[Droewyn]

Have you had trouble using the built-in card reader in your PC? That's what I've used with no problems so far.

Yeah, I tried it and it's not working.

 

[Taosaur]

Does the nook hd+ regconize fully 64 Gb? because B&N said that its SD limitation is 32gb.

Pre-release specs were quoted at 32GB, but I've seen B&N product pages quoting both 32 and 64GB. Regardless, all the LCD Nooks from the Color onward have been reported using 64GB cards successfully.

 

[finnishguy]

Sandisk class 4 16gb and 32gb both boot cold. However, the 32gb one is giving me random reboots, while the 16gb is rock solid. The cards are otherwise identical regarding ROM and apps. I've tried the latest 4 binaries by verygreen on both cards and this is true for all of them, which leads me to believe the reboots are (mainly) sdcard-related.

 

[Socket]

There has been some mention in this thread that Sandisk Class 4 are preferred over Class 10 for faster small random writes.

I ran across this thread, pg 37 over in the Nook Color forum that indicates the 32GB Sandisk Mobile Ultra UHS-1 (model SDSDQUA-032G-A11A, a Class 10) performs well with small random writes, specifically: "Random Write 4KB (QD=32)" = 1.96 MB/s

Compare that update on page 37 to the OP on pg 1 where the best QD32 4K random write was 1.79 MB/s (for a Class 2 card no less).

I even ordered one of this model on Amazon a couple days ago (not arrived yet). I'll update here with CrystalDiskMark test results once I get it

HOWEVER.. before you run off to order one, user reviews on Newegg, click Feedback tab are very polarized.. half the users said they were fine, the other half had failures, usually requiring returning or just trashing the card. A 50% failure rate is not good! For all I know, the good reviews were earlier in the card's "life" and more than 50% may have actually died after a couple months.

Anyone here with the Nook HD/HD+ used this card? And has it continued working past 2 months, which seems to be a common premature failure point per the other thread?

By the way, a handy explanation of how to decode the Sandisk model numbers is at this post on a Sandisk forum. (point of that thread: "Mobile Ultra" and "Ultra" are the same card, just different marketing.) For instance, cards ending in "AFFP-A" vs "A11A" are the same card, just different packaging. Likewise "QU" vs "QUA" are same card, just different marketing name (QU=Ultra, QUA=Mobile Ultra).

 

[Socket]

Received the Sandisk Ultra UHS-1 (Class 10) MicroSD 32GB card yesterday (model SDSDQUA-032G-A11A).

Here is one test run. Random Write 4KB (QD=32) of 2.091 seems pretty respectable.

-----------------------------------------------------------------------
CrystalDiskMark 3.0.2 x64 (C) 2007-2013 hiyohiyo
Crystal Dew World : http://crystalmark.info/

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

Sequential Read : 21.722 MB/s
Sequential Write : 12.715 MB/s
Random Read 512KB : 21.309 MB/s
Random Write 512KB : 12.037 MB/s
Random Read 4KB (QD=1) : 5.631 MB/s [ 1374.8 IOPS]
Random Write 4KB (QD=1) : 1.837 MB/s [ 448.5 IOPS]
Random Read 4KB (QD=32) : 5.163 MB/s [ 1260.5 IOPS]
Random Write 4KB (QD=32) : 2.091 MB/s [ 510.5 IOPS]

Test : 50 MB [M: 0.0% (0.0/29.7 GB)] (x5)
Date : 2013/02/24 13:33:39
OS : Windows 7 Home Premium Edition [6.1 Build 7600] (x64)
-----------------------------------------------------------------------

This was run using a USB3.0 port on my PC but with a USB2.0 to MicroSD adapter (the compact keychain type). I'm not sure if a USB3.0 card reader would improve results or not, since I don't have one to test with.

[...] I even ordered one of this model on Amazon a couple days ago (not arrived yet). I'll update here with CrystalDiskMark test results once I get it

 

[Socket]

Well, copied my CMv10 disk image over to the new 32 GB card and it's not behaving itself. Haven't been able to boot successfully yet. Card seems unstable. Locks up at different parts of boot sequence each time I try. Alas, just like the more recent reviews of this card on Newegg suggest...

I'm wondering does the "manual alignment" process mentioned back in Stevethegreat's post #24 of this thread need to be done to my 32G card as a fix? Or is this card just toast?


Process to prep the card:
- Made disk image of my (working) 8 GB Kingston card (with 4 partitions) using Win32DiskImager.
- Restored that image to the new 32G Sandisk card
- Used EaseUS Partition Master to verify 32G card now has 4 partitions (it does) and expanded the 4th (CM10SDCARD) partition to fill the rest of the disk.


Boot attempts:

Attempt 1: Nook HD+ was at stock login screen. Put Sandisk 32G card in Nook HD+. Long press power button, reboot. Cyanoboot screen appeared and stayed there. I waited 5 mins.. still there. Concluded it was locked up. Long press power button to power off.

Attempt 2: Powered on. Cyanoboot screen appeared, stayed 30 seconds, then Cyanogenmod circle logo appeared for maybe 30 seconds, then CM10 desktop (green leaf pattern) appeared. Looked like success (but wait..). I unlocked screen with a swipe, icons appeared, but then became unresponsive. 10 seconds later spontaneous reboot, back at "nook" screen for a few seconds, then the white nook bootup "99%" screen, where it stayed indefinitely (I waited about 10 mins). Popped memory card out, nook finished booting into stock, at nook stock login screen.

Attempt 3: Popped Sandisk 32G card back in, long press power, choose reboot. Cyanoboot screen appears for 10 secs, then Cyanogenmod circle logo indefinite. After 10 mins of logo I gave up and long power press to turn off.

Attempt 4: Powered on. Cyanoboot screen for 10 seconds, then Cyanogenmod logo for abut 30 seconds, then spontaneous reboot back to nook logo for 30 seconds followed by nook stock white 99% screen which sticks at 99% until 32G SD card is popped out at which time it finishes booting into stock.

Sigh..

Received the Sandisk Ultra UHS-1 (Class 10) MicroSD 32GB card yesterday (model SDSDQUA-032G-A11A).

Here is one test run. Random Write 4KB (QD=32) of 2.091 seems pretty respectable.
[...]

 

[leapinlar]

Well, copied my CMv10 disk image over to the new 32 GB card and it's not behaving itself. Haven't been able to boot successfully yet. Card seems unstable. Locks up at different parts of boot sequence each time I try. Alas, just like the more recent reviews of this card on Newegg suggest...

I'm wondering does the "manual alignment" process mentioned back in Stevethegreat's post #24 of this thread need to be done to my 32G card as a fix? Or is this card just toast?


Process to prep the card:
- Made disk image of my (working) 8 GB Kingston card (with 4 partitions) using Win32DiskImager.
- Restored that image to the new 32G Sandisk card
- Used EaseUS Partition Master to verify 32G card now has 4 partitions (it does) and expanded the 4th (CM10SDCARD) partition to fill the rest of the disk.


Boot attempts:

Attempt 1: Nook HD+ was at stock login screen. Put Sandisk 32G card in Nook HD+. Long press power button, reboot. Cyanoboot screen appeared and stayed there. I waited 5 mins.. still there. Concluded it was locked up. Long press power button to power off.

Attempt 2: Powered on. Cyanoboot screen appeared, stayed 30 seconds, then Cyanogenmod circle logo appeared for maybe 30 seconds, then CM10 desktop (green leaf pattern) appeared. Looked like success (but wait..). I unlocked screen with a swipe, icons appeared, but then became unresponsive. 10 seconds later spontaneous reboot, back at "nook" screen for a few seconds, then the white nook bootup "99%" screen, where it stayed indefinitely (I waited about 10 mins). Popped memory card out, nook finished booting into stock, at nook stock login screen.

Attempt 3: Popped Sandisk 32G card back in, long press power, choose reboot. Cyanoboot screen appears for 10 secs, then Cyanogenmod circle logo indefinite. After 10 mins of logo I gave up and long power press to turn off.

Attempt 4: Powered on. Cyanoboot screen for 10 seconds, then Cyanogenmod logo for abut 30 seconds, then spontaneous reboot back to nook logo for 30 seconds followed by nook stock white 99% screen which sticks at 99% until 32G SD card is popped out at which time it finishes booting into stock.

Sigh..

Rather than do that image clone, which should have worked, I would back up your old SD with CWM, copy your media files with MTP and start fresh with that new card. Install the rom and gapps then do an advanced restore of just the /data with CWM. Then if it all works, restore your media files.

Sent from my Nook HD+ running CM10 on Hybrid SD

 

[Socket]

Since my PC is Windows, I just downloaded and used MiniTool Partition Wizard Home Edition to align the "boot" and "CM10SDCARD" partitions. (it wouldn't align the system and data partitions because it only works on FATx partitions).

First boot on the "fixed" card still resulted in a spontaneous reboot over to stock ROM. Ugh.

However on 2nd boot attempt with the fixed card, the boot sequence went very quick, there was no stutter in the CyanogenMod logo rotating circle like there has been in every previous boot (including the failed boots from this 32G card prior to alignment, and I was at the leafy login screen. I've been poking around, using the web browser, etc, for about 10 mins now and (so far) no lockups or reboots.

I guess time will tell if this fix was enough or if it's just being quiet for the moment and not really fixed. If it gets ugly again, I'll start over from scratch as you suggest, leapinlar. To "back up my old SD with CWM", which filesystems are you referring to.. system and data? And by media files, do you mean anything I added in the CM10SDCARD partition? Still learning my way around.. thx.

Rather than do that image clone, which should have worked, I would back up your old SD with CWM, copy your media files with MTP and start fresh with that new card. Install the rom and gapps then do an advanced restore of just the /data with CWM. Then if it all works, restore your media files.

 

[leapinlar]

To "back up my old SD with CWM", which filesystems are you referring to.. system and data? And by media files, do you mean anything I added in the CM10SDCARD partition? Still learning my way around.. thx.

When you back up with CWM, it automatically backs up everything, but CWM backups do not back up the media partition. But when you restore, you can select which partitions you want to restore if you select the advanced mode. Just restore /data.

And by media files I do mean whatever you have put on CM10SDCARD, which after the CWM backup includes the backup files.



Sent from my Nook HD+ running CM10 on Hybrid SD