[comp.os.minix] Partition sizes limited to 32 MB.

kenny@uf.msc.umn.edu (Kenneth R. Goers) (12/29/90)

> A few days ago someone posted that they were having problems making
> a partition larger than 32Megs on their hard disk.

That was me.

[ Stuff about hardware excluded. ]

> What Fdisk were you using?  If you were using the MS-DOS fdisk.com, then
> you may have problems creating a partition over 32M.  In DOS, you should
> use the fdisk.exe (there are two supplied with DOS 3.3 and 4.0 --
> fdisk.com and fdisk.exe) to create big partitions.  However if you're
> careful you can also use Minix's Fdisk to do it all for you (the Minix
> one is, as usual, more versatile anyway.)

Well, thanks for all the wonderful replies.  I have found out that the limit
seems to be 64 MB Partitions, not 32.  I have 30 and 20 MB partions and had
problems when trying to create a 80 MB partition.  When I said 32 MB I simply
quoted what the Intallation manual gave as a maximum. ("Partition sizes up to
32MB should work without problems as should disks up to 1024 Cylinders".  From
the installation manual page 12, v1.5) What would be more accurate would have
also added something about the limit of 65535 blocks in a file system (block
numbers are unsigned ints), which gives you 64MB.

> Note that when I was running 16-bit Minix, I only had the 20M partition,
> so I don't know if running in 32 bit mode helps at all.

I don't know if 32-Minix fixes this problem or not.

kenny

-----------------------------------------------------------------------------
Kenny Goers   | "To compute... or not to compute... that is the question...
kenny@msc.edu |  To suffer the slings and curcuits of outrageous functions...
              |    or to take up arms against a sea of transistors.
              |    or rather transponders...  transcondu... trans... er.. 
              |  Oh to heck with it."   - Oliver Wendell Jones, Bloom County.
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--                                                                    --
Kenny Goers          Minnesota Supercomputer Center        kenny@msc.edu