ตามlinkพี่ข้างบน คุณ farpavilions เขาว่าอย่างงี้ (ไม่มีปัญหาหรอกค่ะแต่อยากรู้เหมือนกัน) ยังมีวิธีอื่นอีกมั้ง ใช้วิธีไหนบอกด้วยนะค่ะ ขอให้สำเร็จ
"I think I can help -- after googling for hours I came up with a workaround and my SD card is now readable again, without my having to reformat for the umpteenth time. Since I'm a Linux newbie, I'd appreciate it if the experts could let me know if this method is correct -- it worked for me but I'm writing the instructions from memory and may have the sequence mixed up.
First, you need to mount the SD card manually, since the eeepc is not reading it automatically.
1.) Create a folder in /home/user that you can mount the SD card to. Open File Manager --> go to /home/user --> create a new folder. My new folder is /home/user/Farpavilions, substitute the following instructions with your own folder name.
2.) Insert your SD card, which your eeepc will refuse to read. Open up the console (CTRL + ALT +T) and type "sudo mount /dev/sdb1 /home/user/Farpavilions"
Once this is done, I *think* you should be able to access and read the file from File Manager.
3.) If you don't want to have to mount the card manually everytime you reboot, follow the Wiki instructions for disabling device detection at
http://wiki.eeeuser.com/howto:tempdisab ? detection. I used the "disable at startup only function" to allow me to automount other devices eg. flashdrives. If you do this and subsequently want to unmount the device, make sure that you manually unmount the SD card by typing "sudo umount /home/user/Farpavilions" in the console.
4.) I suspect this is optional, but to make sure that you set the right permissions for reading/writing to SD cards, follow these instructions:
http://wiki.eeeuser.com/howto:sd_permissionsAnd if you really really want to make sure, you could also go to the new specified folder ("/home/user/Farpavilions" in my example), open up a console, and type in "sudo chmod -R 777".
Once you've done all this, you should be able to access your SD card directly from File Manager upon reboot. If for any reason your permissions are still giving you grief, you can probably work around it by using File Manager (Administrator) instead. "
GOOD LUCK !!