SD Card Unreadable - General Questions and Answers

I recently root my G1 back to RC29 and now I'm recd the message sd is unreadable. Format sd card is greyed out on my phone. Always I do not have the system update option. Please help!!

I would try it in a sdcard reader if the computer also have problems
then I would go to the manufacturers site to get a lowlevel format tool for that type of card
if that did not fix it I would write the card off as dead

can i use a partition program to unformat the sd card?

my phone just updated back to donut and my sd card is now being read by my phone. thanks for the suggestion

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[Q] Blank SD Card or unsupported file system

I am so depressed right now!
My unrooted nexus one no longer wants to read my SD card. I get the "blank sd card or unsupported file system" notification.
I have tried 3 different sd cards, all reseated several times. All the cards work with computers with a card reader, I have tried factory resetting my phone, from the settings menu and from the "volume down + power" menu. The cards also work with various devices that support SD cards.
If i touch the notification it asks me to format my card, if i say yes it does nothing. If i go into settings I can't mount the sd card : the notification cycles through : "preparing sd card... sd card safe to remove... blank sd card...". If I have tried a format before trying to mount, the notifications do not appear/cycle.
If I try to read on my computer an SD card that I tried to format with my nexus one, the computer states that I need to format the card. Once I format it, it works fine.
I have tried to format with default windows utility as well as the official app you can find by googling "SD Formatter 3.0 for SD/SDHC/SDXC"
I think I have tried everything I can... I have a feeling that this is software related and it persists through wipes or the card reader on my phone is dead.
I don't know what else I can do other than ship it to HTC and before doing that I wanted to ask the community here...
try to format in windows as FAT32 or try to format from other model..say nokia?
mikomarco said:
try to format in windows as FAT32 or try to format from other model..say nokia?
Click to expand...
Click to collapse
Tried that as well, forgot to mention
Bumping because I am desperate!

SD card not being recognized correctly!

I have a completely stock Sensation:
Android version 2.3.4
Software 1.45.531.1
I have the 8gb sandisk sd that come with the phone.
My SD card has never worked properly, when I take photos they are saved on the SD card. If I try and save a picture from a text message I get an error stating there is no SD card.
The main issue I have is I am trying to download a system update and I get an error "You need an SD card to download the system update."
I have tried to format the SD card a couple of times and I still get the same error. I have tried other cards with no luck.
Anyone have any ideas?
Try to root and flash different ROMs to see if there are any differences. If rooting and flashing doesbt work, maybe your phone SD reader is broken. Or maybe you didn't put it in right(x Jk. Try to root.
Possibly try to reset your phone to stock. When you go into settings and into storage, does it say anything under external storage or SD card?
Sent from my Sensation 4G using XDA
Yes, under SD and phone storage
Total space:
7.39gb
Available space:
6.81gb
It also gives me the option to unmount the SD card

Micro SD card unreadable after trying to format it

Today i was attempting to partion my SD card so i can install more applications on my phone(i hate the low internal memory i have). Anyhow, i used this tutorial to get it done, and now my SD card wont be recgonized by either my pc or phone, i tried booting into recovery in my phone and partion it trough recovery, all i got was "Mounting of SD card failed!". On Pc it actually picks up that thre is an SD card inserted, but wont read it.
I realize that i need to format it, but there is no option to do so on PC, or at least i cant find it, im guessing a special programm might be needed.
Any ideas?

Unable to use SD card?!

Hi all,
I recently, erased all data on my SD card (using the "Erase SD card" option in settings > storage). Once this had completed the total space went back up to 7.4GB but available space went to 0.00B! I've rebooted the phone, unmounted and re-mounted the SD card and still available space is set to 0!
What could I possibly be doing wrong?
Thanks,
Use a card reader and connect the SD Card to your computer, if it doesn't show up, use a partition tool to partition the SD Card, such as MiniTool Partition Wizard.
Sadra.. said:
Use a card reader and connect the SD Card to your computer, if it doesn't show up, use a partition tool to partition the SD Card, such as MiniTool Partition Wizard.
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Thanks for the help. What an absolute ball ache though! Why is the "erase" option included if it's going to cause these issues? Would have been better off deleting each folder manually.
RESOLVED
I actually managed to resolve this by erasing from settings a couple more times :S

Recovering an "Adopted" SD Card?

Hi folks,
I have an SD card here that I was using for Adopted Storage but I've managed to get it stuck as an "adopted" card and can't seem to get it back functioning as a normal SD card
Long story short... I wiped the device the card was in but I didn't "unadopt" the SD card before hand - as in set it back to portable mode. While the device could recognise there was an SD card afterwards, it couldn't prepare it for use and suggested a card error or something to that effect.
I figured I'd just pop it in my laptop (Windows 10 x64) and re-format it but this didn't work. Failing this, I decided I'd "nuke" it using Minitools Partition Wizard. While this program had better luck identifying the card, could display and delete the partitions on it and could run the Wipe task - it had no effect on the card... the partitions just re-appear after any attempt to nuke them!
Has anyone any ideas about how I can restore this card back to a normal FAT formated SD card?
Just to clarify - I don't care for the data that might be on it... I just want the card back usable
Thanks
Recovering an "Adopted" SD Card?
The best solution for now would be to plug the sd card into a phone with android 6.0 so that the phone can read the card and then while setting it up,you can format the card as "normal "(the part where it asks you whether to use the card as in adaptive storage or for accessing files).
Sent from my iPhone using Tapatalk
Cruzy12100 said:
The best solution for now would be to plug the sd card into a phone with android 6.0 so that the phone can read the card and then while setting it up,you can format the card as "normal "(the part where it asks you whether to use the card as in adaptive storage or for accessing files).
Click to expand...
Click to collapse
When I try this, I get "Unsupported SanDisk SD card"
I'm then asked to select either Portable or Internal and then Erase & Format but neither work. They fail at 20% and the message "Unsupported SanDisk SD card" is shown again
I'm a bit stumped. I thought surely the encryption used on adopted cards was only to stop external reads. It seems in this case it's stopping me from writing to or formating the card
Running out of options

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