32GB uSD card problems

[Se7enLC]

I just got a 32GB uSD card (SanDisk, from Verizon). Seems to work fine, except that after I unmount it, my phone reboots. Seems reproducable, too. The data is all there and works fine, but the phone reboots when it tries to remount the card after mounting it on the PC. Anybody else with a 32GB card experience this? I am running Froyo (CyanogenMod 6.0RC1)

 

[dolpns13]

Thats odd... Ive never heard of this issue. My phone doesnt reboot when I unmount

 

[Se7enLC]

Thats odd... Ive never heard of this issue. My phone doesnt reboot when I unmount

Do you have a 32gb card, or the standard 16gb?

 

[ChugIt]

I never had this issue (yes 32GB).
Bump for replies in case I ever do.

 

[CatFishDom]

Mught be the custom rom. I have had this problem when I had a custom rom on my droid.

 

[Se7enLC]

Mught be the custom rom. I have had this problem when I had a custom rom on my droid.

Agreed - it could be an issue that is specific to CM6RC1, so I posted in that forum as well. I figured switching to a 32gb card was uncommon enough that it could potentially be an issue for even stock droids - was worth confirming that it works fine for people.

 

[dolpns13]

Thats odd... Ive never heard of this issue. My phone doesnt reboot when I unmount

Do you have a 32gb card, or the standard 16gb?

I have the 16GB

 

[ndoren]

It's not your custom ROM.

Mine does it too. Stock FroYo OTA ROM, build FRG01B. 32Gb card is the Sandisk sold by Verizon. So it's not your custom Cyanogen ROM. I run a stock 2.2 ROM.

The phone reboots once while mounting the card during power-up. Thus, in effect it reboots twice when you power on, then works normally. The phone also reboots when unmounting the phone memory from a PC via USB, then works normally. I went back to the stock 16Gb flash chip and all is normal again.

 

[harrellj]

Odd question, but was the card formatted before use?

 

[searayman]

Odd question, but was the card formatted before use?

for somone looking to buy a 32 gig card what is formating it mean and what should I do before I install it?

 

[ndoren]

If you buy Verizon's Sandisk card, it's preformatted. Since it caused unwanted reboots, I formatted it again via the Droid's built-in formatting utility. Reboots continued. So, the formatting didn't seem to matter.

 

[ilikemoneygreen]

If you buy Verizon's Sandisk card, it's preformatted. Since it caused unwanted reboots, I formatted it again via the Droid's built-in formatting utility. Reboots continued. So, the formatting didn't seem to matter.

Take the card back to verizon and be like wtf? Show them the problem, and compare it to the 16gb card to show that reboots are a problem.

 

[ndoren]

I ordered the card via the website (with free overnight shipping) so returning it isn't quite as easy as taking it back to the store. I know others are having this problem so I'm not yet convinced it's a card defect issue. I do notice that the card is SLOW. I'm going to run some speed tests on it.. it's obviously not the class 4 (or better) speed that came with the Droid originally. The Droid reboots while it's mounting the card... it's almost as if the card is too slow to mount and something 'times out' within the Droid OS and resets before the card is mounted.

 

[garrett]

I ordered the card via the website (with free overnight shipping) so returning it isn't quite as easy as taking it back to the store. I know others are having this problem so I'm not yet convinced it's a card defect issue. I do notice that the card is SLOW. I'm going to run some speed tests on it.. it's obviously not the class 4 (or better) speed that came with the Droid originally. The Droid reboots while it's mounting the card... it's almost as if the card is too slow to mount and something 'times out' within the Droid OS and resets before the card is mounted.

anything bought online from verizon can be returned/exchanged in the store.


Myself and my girlfriend both have had 32 gig cards for about 3 months now and havent had a single issue. Were both running custom roms.

we did not get them from verizon they were bought directly from sandisk's website.

 

[ndoren]

Yeah it's the same card you bought... Verizon just adds their own branding to the package, and they've got it on sale for $99.

I'm running the OTA update of froyo but I'm rooted and overclocked.

Here are some speed results:

Original 'factory stock' 16Gb card - Read: 5 Mb/sec, Write: 4 Mb/sec
original 16 Gb card -> class4

New Sandisk 32Gb card - Read: 4 Mb/sec, Write: 2 Mb/sec
new 32Gb card -> class2

This doesn't necessarily have anything to do with my reboot issue... just an observation about the card's speed.