SVN rev 354: formatting of FAT16 media via GUI (PMFORMAT) hangs

[erdmann]

As a test, tried to format a VFDISK inserted virtual floppy: 1) "format x:" from a commandline worked 2) Trying to format via the GUI /WPS by selecting "Format" from the context menu of the virtual floppy hung. It did not matter if I selected "Quick Format" or not

[erdmann]

If I use the builtin FAT16/FAT12 file system support, formatting works from the commandline as well as from the GUI.

[Valery V. Sedletski]

I see pmformat.exe starting and immediately disappearing, not hanging (if start "FORMAT..." from drive context menu). Anyway, PMFORMAT does not support "FAT32" as a floppy filesystem, so this may be because of this.

PS: I have an idea, to rename FAT32.IFS to UNIFAT.IFS with FS_NAME="UNIFAT" and use it as a library. And make a special IFS stub, which will have FS_NAME="FAT"/"FAT32"/"exFAT" passed to it as a command line parameter. It will determine addresses of UNIFAT.IFS entry points on init with DosQueryProcAddr, and its entry points will be just UNIFAT.IFS entry points wrappers. FS_MOUNT of a stub IFS will only mount it's own filesystem and reject other file systems. UNIFAT.IFS FS_MOUNT will reject to mount everything. So, fat32.ifs will show correct file system.

[Valery V. Sedletski]

BTW, it seems that changing FAT drives' filesystem from FAT to FAT32, or vice versa causes Floppy icon in Drives object hang the WPS when right-clicking by mouse. Recreating the Drives object by SysDestroyobject/SysCreateObject with REXX partially helps, but right-clicking physical floppy icon still hangs the WPS. Vitrual floppy (VFDISK) is ok. So, it seems that WPS assumes A: and B: floppies to be FAT only, otherwise it hands the system. VFDISK floppy is assumed to be other type of drive (even the icon is not floppy, but like a memory card, or integrated circuit). Right-clicking the virtual floppy doesn't hang the system. So, this seems to be a WPS fault. But right-clicking the virtual floppy with chosing "Format..." menu item causes PMFORMAT to blink and disappear. Right-clicking other FAT drive managed by fat32.ifs causes PMFORMAT to start ok, but it won't format anything, just does nothing. This seems to be a PMFORMAT problem. (Trying to start "FORMAT x: /fs:fat" parameter works the same on a IBM FAT and on FAT32.IFS,so I wonder what could be the difference. The only difference is that the original drive is reported as "FAT32".) PMCHKDSK on any drive also blinks and disappears. Why it should be?

[martini]

Hi.

So, should be blame this on "PMCHKDSK"? Should this ticket be closed as "invalid" ?

Regards