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SubjectRe: remount active filesystems (death of UMSDOS predicted)
Matthew Wilcox wrote:

>There's now no good reason to continue to support umsdos. Here's how to
>install on a system without repartitioning:
> * create a file on the native partition
> * set up a loop device on that file
>now continue the installation as normal with /dev/loop0 as your root
>partition. To boot, you need an initrd and linuxrc looks something
>like this:

Setting linux up without repartioniong is not the only purpose for UMSDOS
(although it is one of nicer things you can do). Sharing files that you can
access BOTH from DOS and from Linux is other one. Now, if all world was
running 'vfat' or NTFS, that point would be gone, but so would the whole
point of Linux also (since everyone would be running Win*). But there are
still many people refusing to run win*, but having to run DOS stuff around.
And they hate to waste free space on those DOS partitions. And they also
refuse to 'upgrade' their old, reliable FAT to 'VFAT stuff', which renders
not a few DOS utilities unusable.

Also, there is a point of being able to run certain backup devices only
under DOS, and wishing to backup Linux... etc, etc.

UMSDOS has its puropse...

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