android dismounts sd card randomly

[GoogleCodeExporter]

What steps will reproduce the problem?
1.connect via usb with vista
2.wait for vista to try to scan and fix the sd card OR write something to 
the card
3.taskbar notification for preparing sd card

What is the expected output? What do you see instead?
The sd card should stay mounted instead of unmounting.

What build are you using? Do you have apps-on-sd? What radio? Did you wipe
after flashing (yes if you are on an auto-wipe build)?
5.0.2Hr3, no apps on sd, newest radio. yes to wipe

Please provide any additional information below.
I saw that someone posted this on the main xda thread, but he was also 
compaining about features. I can not find that post now or anything 
relating to it.

Original issue reported on code.google.com by jerry...@gmail.com on 21 Apr 2009 at 9:42

[GoogleCodeExporter]

5.0.2Hr4 build, latest radio, no apps on SD, wiped at install.

I had this very same issue, SD card would mount and be shown on 'My Computer' 
(Vista), could open disk and browse contents, but, as soon as I tried to copy 
any 
files to the card the phone would disconnect the usb connection, redetect 
and 'Prepare the SD card' again. Remount and try to copy again - same again. I 
tried 
it on XP aswell, card shows as disk but constantly asks to format card. As a 
last 
measure, before I was about to bounce the phone off the wall, I tried a normal 
USB 
cable, not the 'special' cable that came with the phone, and JOY of JOYS it now 
works properly. 

Original comment by woger.wa...@gmail.com on 24 Apr 2009 at 6:56

[GoogleCodeExporter]

i have used many different cables, the only similarities are they all have 
ferrite 
cores. I have not tried the stock usb cord, in fact I may have tossed it. >.<

Original comment by jerry...@gmail.com on 26 Apr 2009 at 4:00