1 Topic by juyoung (edited by juyoung 2008-12-01 13:23:56)

  • Registered: 2008-09-26
  • Posts: 2

Topic: file transfer to chumby.

hello every one.
I want to put the contents files into chumby directly.
but almost folder are read-only, and mnt/usb folder is can not use because lost files when power off.
how can I change permission of chumby's directory to 777?
Otherwise, If you have other good way, let me know
Thanks.

  • Duane
  • Duane
  • Blue Octy
  • Offline
  • From: San Diego, CA
  • Registered: 2006-08-24
  • Posts: 8,197

Re: file transfer to chumby.

Most of the file systems on the chumby are cramfs - they are compressed, read-only file systems and cannot be made writable simply by changing permissions.

The only directory that's writable and will survive a power cycle is /psp, however, it can only hold a small amount of information.

If you have a USB dongle, writing to /mnt/usb will persist as long as you issue a "sync" command to flush the filesystem cache.    You should also issue a "sync" command on /psp if you write there.

Duane's Website

3 Reply by juyoung (edited by juyoung 2008-12-01 14:20:11)

  • Registered: 2008-09-26
  • Posts: 2

Re: file transfer to chumby.

I see. one more thing Duane.
Is change permission not available never? I must to move files into chumby.
Probably The files are 20MB or bigger.
It is difficult problem.

Thanks.

  • Duane
  • Duane
  • Blue Octy
  • Offline
  • From: San Diego, CA
  • Registered: 2006-08-24
  • Posts: 8,197

Re: file transfer to chumby.

These file systems are read-only - you cannot change permissions.

In any case, the total amount of NAND flash on the device is only 64MB - there's no place in the device itself to store a 20MB file, since the chumby firmware uses pretty much all of it.

The only place you can put such a file is on a USB mass storage device.

Duane's Website