Re: Re: Coming soon to your mailbox (part 2)

Ok it saves me to have to propose it, i think there is a place for three
disk checking utilities in FreeDOS:
- a plain command line one that just quickly scans a drive without any user
interaction and running in such a way that it always chooses the non
destructive way of fixing errors (chkdsk)
- an interactive program with all the bells and whisles you might amagine,
this program ia very interactive and lets you pick which files to process
how (scandisk).
- DOSFSCK for FAT32 running in 32 bit protected mode.

Imre

PS. Of course DOSFSCK will eventually run in FreeDOS with all the
functionality you want. There are enough people here that want it to
succeed. You just cannot expect us all to just drop everything we are
working on and start working on the tool. Please be a litle bit patient and
it will come up on top of somebody's list of things to do for FreeDOS.

----- Original Message -----
From: Eric Auer <[email protected]>
To: <[email protected]>
Sent: Friday, November 01, 2002 2:37 AM
Subject: Re: Re: [fd-dev] Coming soon to your mailbox (part 2)


>
> Hi Alain / Imre,
>
> there already IS a 32bit FAT32 checking tool for DOS:
> My DOS (djgpp) port of DOSFSCK (in dosfstools for Linux) is only lacking
the
> lowlevel disk access functions to be exactly what you suggest. It was
quite
> easy to port DOSFSCK using DJGPP (Bart had recommended that I should not
even
> try 16bit compilers, because of the bigger memory consumption of FAT32
checking
> tools and similar issues, and DJGPP turned out to be very much like its
Linux
> pendant gcc/g++, easing the port a lot).
> The problem is that DOSFSCK only uses file I/O to access the partition. In
Linux,
> you just tell it to open "/dev/fd0" instead of "test.img", and voila, it
will scan
> the floppy. Because Linux offers partitions and drives as virtual device
"files".
> The DOS version, however, cannot use this mechanism, so my port currently
can only
> work with disk image files.
> I have posted lots of hints on how to add a disk I/O layer to DOSFSCK
(would get
> active if the "image file" is called "x:" where x is the drive letter -
otherwise,
> the file I/O layer must stay intact in order to keep the disk image
ability) to the
> fd-dev list, but did not get to write it myself yet. Would be very nice if
somebody
> could help with that.
> DOSFSCK has the disadvantage of only running in 32bit mode and having an
user interface
> that differs a lot from CHKDSK and SCANDISK.
> It has the advantage that it can check FAT12/16/32 for lots of error
types, repair most
> of them, present some verbose output and simulate (eats even more RAM :-))
the changes
> before they are written (scan -> write fix to buffer -> re-scan "as if
buffer had been
> written" -> no errors remaining? -> write changes to disk). Also has a
little undelete
> and drop function built in.
>
> Hope I could motivate somebody to help with the disk I/O stuff in DJGPP...
As said,
> the version which I have currently online has all other features, but is
limited to
> disk images instead of real partitions.
>
> Eric
>
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