Hello community! This is my first post looking for some help...

• I own a Nokia N900 (Maemo), I copied some music from PC to N900. Not sure how/why some files were copied as "read-only".
• After some time, I tried to erase all MP3 files from N900, most of them went out, but some of them couldn't be deleted. These files are tagged as "read-only" also the folder has the same restriction.
• Mass storage & PC Suite Modes on PC didn't work (attributes/properties are shaded, so no-go). Deleting them directly from N900 using File Manager application didn't work also. I am running with Administrator privileges on PC if it could be the issue.
• Surfing on the web, I found some similar stories; some of them were successfully answered (like this). I tried same solution on my device as follows disconnecting it from PC and running Xterminal on device;

 $ root (enter)
Nokia-N900:  # umount /dev/mmcblk0p1 (enter-nothing happens apparently)
Nokia-N900:  # fsck.vfat -aw /dev/mmcblk0p1 (enter-after 1 or 2 seconds the screen shows the follow lines)

dosfsck 2.11, 12 Mar 2005, FAT32, LFN
/dev/mmcblk0p1: 5222 files, 182765/442377 clusters
Nokia-N900:  #

What does it mean? After it, I reboot the device and try again to delete files with no success. They still as read-only with shaded properties not available for modification when reconnect the USB cable for PC Mass Storage or PC Suite Mode

Any advice?