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Help What SD card - type 2,4,6?

Jerry-rigged

Jerry-rigged

Android Enthusiast
(I know, another memory card thread, but - )

So I have pretty much decided to run my nook as a duel boot (running CM7 off the mSD), but I need to buy an SD...

I read a lot of threads here about how you MUST use a class 6 or 10 card to get decent performance. Sounds good.

Then I read this over on XDA - SD - Strange Results... Very long thread that basically says use a class 4 or even a 2, but NOT a 6 or 10. Lots of talk about sequential read/write speed vs. small block random read/write...

In a nutshell, which is right? I know stuff changes quick with android, last months "hot news" is this months "don't do"...
 
I followed Colchiro's advice and got a Class 4 Sandisk. I have nothing to compare it against, but I haven't seen any performance problems.
 
Sandisk is the way to go from what I've read.

I preferred a class 6 but couldn't find one so ended up with class 4.

Where are you installing the rom, on the Nook or on the card? You want a fast card if you're installing a rom on it.
 
Looking to do it on the card. That way the wife can have straight Nook, and I can have straight Android. Loading Android on a card seems the easiest way to do a duel-boot, from what I have read...

:)
 
Internal storage is usually faster so I'd try for a class 6 if you can. I don't recall if there were any class 6 Sandisk card reported in that XDA link above.
 
I must just be lucky on the cards I have laying around. Tried a 2GB Sandisk microSD (speed unmarked) and it worked fine, then a class 6 8GB Transcend and that was even faster, I think.
 
The cards I have "lying around" include an generic unclasiffied 1gb, and a Sandisk class 2 16gb (came with a moto droid). If I can get some PC time at home, I am gonna try that 16gb, but I don't expect it to be fast...

Hopefully I will get a chance to pick up a class 4 or 6, 8mb or 16mb card soon.
 
I've got a Sandisk cat 4 32gb card, and even my PC doesn't like it. It's sometimes recognized, sometimes not. Could be a defective card I suppose, I don't have another one to compare it to.
 
mhotovec said:
I've got a Sandisk cat 4 32gb card, and even my PC doesn't like it. It's sometimes recognized, sometimes not. Could be a defective card I suppose, I don't have another one to compare it to.
Click to expand...


could also be just the microSD sleve. I was having problems with a pc using a card but replacing the sleve fixed it. fyi...
 
I've got a half dozen different adapters around here, and have tried it in 3 different computers. It works better in some than in others, but it doesn't work 'right' in anything. I'd toyed with the idea of 'wasting' the 32gb of space and making it my bootable 3.2.01 card. But if I'm booting from that card it's because I have a problem, so the last thing I need at that point is an iffy card.
 
I have the same problem … my 32GB 4 SanDisk micro SDHC is very temperamental.
Generally it randomly looses all data or some files become 0B in length.
The last time I only powered down my Galaxy S Vibrant to swap the battery and … I lost all the data on the SD card.
Have I just wasted $60 or … there is a way to fix it?
If so …. PLEASE HELP!!!
 
You could try backing up the entire card to your computer.

Make a folder on your C drive and give it a name one character long, like N. You probably have a lot of files with long file names on them and that'll prevent most of those as being an issue.

Copy your entire contents of the sd card to that folder. Plug your card directly into your computer, open My Computer, right-click on the card and format the card as FAT32 (so you can read it in your computer). Check for any errors. If the card appears ok, copy the contents back to your sd card. BTW, anything in the lost folder can be deleted. :D
 
I use a Sandisk 16 GB class 4 card running CM7 107 and it is stable and quick. I also have used a Sandisk 8 GB class 4 in my Nook and that too was stable. I read the SD-Strange results thread and that is why I went Sandisk. I figure if the guys who write our roms and kernels recommend them, then that is what I will use...: )
 
I set up CM7 on a 16 GB class 4 SanDisk for a friend and he loves it.

I put stock 1.2 on a 8 GB class 10 Kingston and so far so good. It's my understanding that Gingerbread is more sensitive to the high-class cards than Froyo, so I'll see how it goes.
 
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