BrightSign HD2000 User Guide - Manual (Page 89)

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• For SD cards
SD:/
When BrightSign runs an AUTORUN.BAS script, it sets the current drive to the drive containing
AUTORUN.BAS, so references to files on the same card do not need the CF:/ or SD:/ prefixes.
Testing CF cards
BrightSign works with most CF/SD cards, but is not compatible with all CF/SD cards. You can test
your card by using the dir / shell cmd, and/or using the shell cmd readperf.
Examples:
dir /
readperf bigfile.mpg
If the dir command fails, you get the following result:
Roku> dir /
opendir[/]
Error: can't open dir
If the readperf command fails, you get the following result:
Roku> readperf bigfile.mpg
SET FEATURES transfer mode SUCCEEDED
Unable to open file ATA:\autorun.bas