how to know the files size in menuetos?
what happen when reading 512 bytes of a 100bytes file?
how to debug programs with menuetos?
for file operations menuetos needs 16kb in application memory espace
is required 16 kb for every file or all files could share this work area?
which error codes return menuetos when failed to read a file?

Function 58 returns 0 or error code in eax and filesize in ebx. I'll search and add the codes to next release. And the FS will return a 512 byte block even if the filesize is smaller. All file reads can share the same work area.