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Date: Thu, 26 Aug 2010 16:00:32 -0700
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Subject: Re: Questions about FreeBSD and Linux on the same disk
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  On 8/26/2010 2:15 PM, Doug Barton wrote:
> Howdy,
>
> I'm looking to expand my horizons so I'm experimenting with Ubuntu. I 
> was given the advice to use ext2 file systems so that I could mount 
> the Linux disks from FreeBSD but it seems that we have support up 
> through ext4? Or perhaps the port of efs2progs is necessary for that? 
> I don't mind using ext2 if that's the best choice, but if I can use 
> the newer (better?) option that's fine too. What I am looking for is 
> the "safe" choice, a way to mount the partitions that a) won't crash 
> FreeBSD, and b) won't cause data loss. This would be for both FreeBSD 
> 7-stable and 9-current.

I share systems on disks quite a lot. But my typical usage is have Linux 
be the primary system and use grub to chainboot the FreeBSD partitions. 
If I absolutely must have a shared filesystem between the two, MS-DOS is 
the safest choice.