[syslinux] [PATCH 1/5] fat: fix minfatsize for large FAT32

Ady ady-sf at hotmail.com
Wed Feb 24 18:08:59 PST 2016

> When trying to installing Syslinux on a FAT32 drive formatted using 
> Ridgecrop's Large FAT32 formatting tool [1], the installer will bail due 
> to the minfatsize check, as there is an extra sector being used. This 
> fix addresses that.
> [1] http://www.ridgecrop.demon.co.uk/index.htm?fat32format.htm

The expression:
"...as there is an extra sector being used."

is not clear (to me).

There is an "extra" sector, in comparison to... what exactly?

For instance... Are there other formatting tools (in whichever OS) that 
are capable of similar "large" FAT32 volumes (i.e. volume size >32GB, 
"big" cluster size) that do not use this "extra" sector? Or is it 
"extra" when comparing the resulting "large" volume to smaller FAT32 
ones? Or is it "extra" in contrast to something else?

Is this "extra" sector compatible with any OS / diverse scenarios? (I 
know about the limitations of certain formatting tools, but that's not 
the matter in question here.)

I guess that the most important matter would be to be sure that there 
are no regressions introduced (i.e. that other FAT12/16/32 volumes 
would work in Syslinux just as before this patch). Since I am not a 
developer, I am not getting into such issues now.

I'm not even sure I am expressing my question clearly / correctly, but 
I am hoping it can be understood anyway; if it is not so, please let me 
know and I'll try again.

Perhaps the answer is clear to others (maybe from the patch itself). I 
would still appreciate replies to this question.


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