Frank Pagliughi <[EMAIL PROTECTED]> writes: > It appears that the FAT file system in eCos works if the "whole disk" > is a single partition, meaning that the FAT Boot Sector is written > into the MBR at sector zero. But if the disk uses a partition table in > the MBR, then the code doesn't understand it, rejects the disk as > non-FAT, and fails the mount. This happens even if the disk contains > only a single partition. > > I guess a quick enhancement would be for fatfs_mount() or fatfs_init() > to check the partition table, see if there's at least one entry, and > mount the first one it finds. If there are no partition entries, > *then* check if the MBR is a valid FAT boot sector. This would make > most disks (and compact flash cards) at least partially useful, rather > than being rejected out right. > > As a longer term enhancement, supporting multiple partitions would be > nice, but ideas on how to resolve the devs/mtab idea of a disk to > different partitions would be appreciated.
This is already handled in the io/disk package. You mount /dev/diskN/M for partition M of disk N and /dev/diskN/0 for the whole disk. Partitioning is independent of filesystem type, so it must be done at a lower level that the FATFS. -- Nick Garnett eCos Kernel Architect eCosCentric Limited http://www.eCosCentric.com The eCos experts Barnwell House, Barnwell Drive, Cambridge, UK. Tel: +44 1223 245571 Registered in England and Wales: Reg No: 4422071
