Write to USB file

Archived
1

(I Saw this thread:
viewtopic.php?p=197784 )

I need to write a file on my app that will remain there on the next app runs.
From my understanding, I can write to ‘tmp’, but it will be deleted on the next run.
So my next, less wanted option is to write to a USB drive.
I put a USB, with FAT32, and with FAT format.
However, it failed to write to it. This is my code:

usbfile = “ext1:/usb.txt”
tempfile = “tmp:/temp4.txt”
success = WriteAsciiFile(tempfile,“writeusb2”)
print success ’ this is true
'copy from local to USB drive.
filesystem = CreateObject(“roFileSystem”)
success = filesystem.CopyFile(tempfile,usbfile) ’ this is false !!!
print success

Why is the last ‘success’ value false ?

Thanks

2

Using the USB for this purpose is not a very good solution. First, not all Roku devices have a USB port. Second, the user could remove the USB drive that you wrote to, or modify the file that you wrote. The Registry is a much better solution. It is designed to hold persistent application data. See roRegistry in the Component Reference.

–Mark

3

Thanks, I’ll try it.

4

So umm, why does filesystem.CopyFile(tempfile,usbfile) fail?

Is the file system mounted read-only or what?! Does it matter if it’s FAT, NTFS or?
You may assume i have legitimate use for read-write mount.

5

From the documentation: “The USB filesystems are currently mounted read only.”

-JT

6

“renojim” wrote:
From the documentation: “The USB filesystems are currently mounted read only.”
-JTThanks, could have read that myself huh.
Why are they still read-only if mounting was added in 2.6? I am guessing nobody wants to deal with flushing needed when dismounting (and esp the UI aspects of that)… crud.