Rockbox General > Rockbox General Discussion
Unknown Device e280
datacreek:
Love RB... this is the second e200 I've put it on.
This is driving me nuts and may take a RB/sansa guru to help. I've searched everywhere.
No matter what I do my Sansa e280 shows as an unknown device. This is true in all modes.
In manufacture mode the blue lighted ring lights... still unknown device
It will boot to recovery mode... still unknown device
Rockbox works just as it should. Original OS (01.02.18A) works just as it should.
Luckily I have a ton of (6GB) songs on the unit and can add via the sd card but I can't get to the main drive (MSC) no matter what I do.
I'm stumped as what to do if there is no way I can access it.
The only weird thing I've noticed that may help is when I look Partition Info under Debug Mode it shows.
P0: S:250
T:B 7649 MB
P1: S:EF1000
T:84 20MB
P2: S:0
T:0 0MB
P3:
T:0 0MB
Seems like there are two additional unneeded partitions??
I'm on XP and away from home for a month or so and do not have access to a Linux box although I installed RB on this XP laptop.
The only thing I did that may have screwed this up was when I first got the unit it was shown as an unknown device prior to installing RB. In manufacture or recovery mode (I can't remember) I updated driver from unknown device by pointing to e200 tools.
Instructions were to load 0781-0720.inf but windows only allows selecting a folder and maybe 0666-E200.inf was loaded.
Anyway after I did this it worked. I installed RB and it continued to work for some time, at least a few weeks. XP saw it and all was well.
Then one day I plugged it in and it came up as an Unkown Device. I've tried deleting "unknown device" updating driver (windows cannot find a better driver...).
Like I said everything on the unit works RB and original OS. I just cannot access it. Have tried all USB ports as well as another XP computer and it is the same.
I guess I could just continue to use forever as is but I will not be able to update RB or add/delete songs from the main drive.
I have not seen a similar problem so any help would be much appreciated.
Thanks
zajacattack:
If the drivers are messed up, do the following:
1) Connect your Sansa in MSC mode.
2) In Hardware Manager, UNISTALL the unknown device.
3) Then, right-click "Universal Serial Bus controllers" and select "Scan for hardware changes". Windows will re-install its default driver.
AlexP:
1) The second partition is the firmware partition, kind of essential.
2) I am sure you are (but need to check) trying to access it from the Sansa firmware, as Rockbox for the e200 does not yet have a USB mode?
3) Please read the posting in this forum stickies before posting. This has nothing to do with installation/uninstallation.
datacreek:
Sorry about posting to wrong forum... since this was specific to Sansa I thought that was a better area. Should have read... sorry.
--- Quote ---If the drivers are messed up, do the following:...
--- End quote ---
I've tried that on two separate XP SP2 boxes. Comes back "unknown device".
I am trying to access from Sansa firmware. As I've said, this is my second RB device. Used on a e250 for months before getting the e280.
I understand needing two partitions. It just looked like there were four. Two with 0 bytes.
Any other ideas?
Thanks so much.
bluebrother:
--- Quote from: datacreek on February 22, 2008, 11:06:42 AM ---I understand needing two partitions. It just looked like there were four. Two with 0 bytes.
--- End quote ---
There are two.
The MBR of a drive can hold up to four (primary) partitions. The space for saving the information about those four partitions is reserved, so it has data in any case. The "view partitions" entry in Rockbox' debug menu will always show the information for all four possibly partitions. In your case, the last two partitions are unused and therefore have a start sector of 0 with a size of 0.
(and as the MBR always starts at sector 0 the first partition won't start at sector 0 but something bigger).
Navigation
[0] Message Index
[#] Next page
Go to full version