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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

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Old 01-06-2005, 07:34 PM   #1
natanoj
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Registered: Jan 2005
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Palm Tungsten T5 drive mode with sd memory card


I have a problem with mounting my T5's SD memory card via usb mass storage. In windoze when turning drive mode on (it basically enables the T5 as a usb mass storage device) and connecting the usb cable, windoze sees two separate devices. One for the internal memory of the T5 and one for the SD card slot. It is two devices (drives) not one with two partitions.
Connecting in the same way to my linux machine I only get this:

Jan 7 02:01:13 [kernel] usb 3-1: new full speed USB device using address 31
Jan 7 02:01:13 [kernel] scsi12 : SCSI emulation for USB Mass Storage devices
Jan 7 02:01:13 [kernel] Vendor: M-System Model: G3 Rev: 1.0
Jan 7 02:01:13 [kernel] SCSI device sda: 330624 512-byte hdwr sectors (169 MB)
Jan 7 02:01:13 [kernel] Attached scsi removable disk sda at scsi12, channel 0, id 0, lun 0
Jan 7 02:01:13 [kernel] Attached scsi generic sg0 at scsi12, channel 0, id 0, lun 0, type 0

which means I can mount and communicate with the internal memory of the T5 (via sda1), but I get nothing in the log about the second device (I would expect it to be sdb), which would be my 512MB external SD memory card inserted into the T5.

Any idea on this? I also have an external HD which works just fine (used to have two partitions on it without problems) but in this case the T5 doesn't seam to use two partitions but two separate drives. I also have no problems with my digital camera, also using the mass storage but again only one drive...

I'm running kernel 2.6.9, the usb hardware is OHCI and EHCI.
I would really like to have this working so that it would be nice and easy to transfer music and other files to the external memory card.

Thanks for any help
Jonatan
 
Old 01-07-2005, 07:44 PM   #2
natanoj
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Registered: Jan 2005
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Ah, just found a solution. I needed the "Probe all LUNs on each SCSI device (SCSI_MULTI_LUN)" kernel option enabled. Now it detects both "drives" just fine.
The reason it's needed is because the SCSI code stops searching for devices (LUNs) as soon as it finds one, unless SCSI_MULTI_LUN is enabled.
If you load scsi as a module there is an option to supply, don't remember but here is where I found the info:

http://www.mail-archive.com/linux-us.../msg11614.html
 
  


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