Rockbox Development > New Ports
Cowon D2
funman:
An unpartitioned card with only a fat32 filesystem should be alright.
Bkd11:
--- Quote from: hpfmn on July 23, 2009, 06:39:28 PM ---Maybe it was also the card itself and had nothing to do with rockbox as far as other people do not seem to have a problem... maybe also it has something to with the kind of cards.
--- End quote ---
He's not the only one. A couple of other people have reported problems. Over at iaudiophile.net shotofadds speculated that the power supply might not be shutting down properly, resulting in a spike in voltage which the card can't handle. He also said it might be something else entirely.
You might be advised not to use valuable cards until he finds/fixes this problem. That being said I've been using an A-data 16gb (class 6) card for the past 3 days without any problems. Although recently I've been removing the card before I shut it down and waiting till rockbox boots up before inserting it.
shotofadds:
The reason for thinking the above is that there seems to be no problem using cards in Rockbox continuously for long periods of time. Several people have run battery_bench tests which involve both reading and writing to the card periodically over a long time frame (eg. 18 hours). That suggests to me that the problem is either at startup (unlikely since the card works) or at shut down.
This also fits reports that people have encountered card corruption after initialising the database - which requires a reboot.
I do know that we power off the player differently to the Cowon firmware. We power off by telling the power management chip (PCF50606) to enter sleep mode, which cuts most of the internal power supplies. After writing some config files, the Cowon firmware mutes the audio codec, turns the lcd and backlight off, and then clears a GPIO (A7) and enters an inifite loop. It doesn't seem to write anything to the PCF except to turn the backlight off.
I will do some testing to see if we should be using the same mechanism.
@funman, FAT16 will do too. Just not FAT12.
3amsleep:
WOW, Congrats Shotofadds on the SDHC driver!.
Unfortunately I couldn't get it to work with the only SD card I have now (a 256mb sandisk), the card mounts the player loads rockbox but then I think the conection with the card is lost somehow because the .rockbox dir on the card is lost (maybe the card unmounts?) and I get the "failsafe" mode.
shotofadds:
Is it possible you're using an SD-enabled bootloader but a version of rockbox.zip that doesn't support SD?
The most recent builds (since r21999) do not have the SD driver enabled, for safety reasons.
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