18 partitions here (on IDE, which allows 64)
Posted Mar 18, 2004 22:25 UTC (Thu) by Duncan
In reply to: Lots of SCSI disks/Partitions
Parent article: Lots of SCSI disks
> Can anybody come up with a good real-world
> reason to have >15 partitions on one device?
I recently ran into that question here, on my (luckily IDE, as IDE allows
64 partitions) 250G drive, as I considered installing Gentoo dual-boot on
my current Mandrake system. I do have a second, older, disk, but it
contains a backup installation useful for when my main drive won't boot
because I hosed something up, and for critical personal data backup. I
don't want to change that, at least until/unless Gentoo becomes my primary
distrib so I don't have the possibility of having the regular Mandrake
system hosed by updates, while Gentoo may also not yet be operational or
is itself hosed.
Now, this wouldn't apply to corporate installations, and SCSI tends to be
used more in that environment than in the home, since IDE is cheaper if
more limited and slower, but yes, there ARE reasons to have more than 16
partitions, for some of us.
FWIW, here's my layout and why I needed more than 16 partitons (hmm,
looks better tabulated, but don't want to bother with the html).
hda## mntpt comment
03 /mnt/rtm rootmirror, always keep a / backup
04 -- extended partition mapping
12 /mnt/news dedicated usenet cache
13 /mnt/mail dedicated mail partition
14 /mnt/mm dedicated multimedia
Those are my Mandrake partitions. As I got set to install Gentoo, I
remembered reading about a 16 partition limit, and had to go look it up
and find (to my great relief) that IDE had a larger 64 partition limit.
Here's how I set that up (as listed in my mandrake fstab: boot, tmp, mail,
news, opt, swap, mm, and home, are to be shared)
15 /mnt/g g=gentoo, thus, the gentoo root
16 /mnt/g/mnt/rtm root-mirror for gentoo
17 /mnt/g/usr gentoo's /usr
That still doesn't include dedicated /var/log partitions, one for each
distrib, likely shared public www, p2p, and ftp partitions, if I were so
inclined, or any MSWormOS partitions, since I am MS free (the only
proprietary-ware I believe I still have is my original Master of Orion
game, which I continue to play on occasion using a DOSBox VM). In
addition, further distribs or other OSs, the BSDs, for instance, if I were
to install any of them, would take up further multiple partitions.
BTW, on that 250G drive, with the above 19 partitions (well, 18, since
hda4 is virtual), I still have over 100G of unpartitioned free space to
eventually expand into, so I'm definitely glad, with that sort of space
around, that IDE does more than 16 partitions. <g>
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