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Thread: (Re)partitioning advice needed
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- Join Date
- Oct 2005
(Re)partitioning advice needed
So I fired up Qtparted from a liveCD and tried to shrink one of the existing partitions to make room for a 512Mb swap partition, but nothing worked. Here's my (current) partition table, from fdisk:
Disk /dev/hda: 40.0 GB, 40007761920 bytes 255 heads, 63 sectors/track, 4864 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/hda1 * 1 2295 18434556 7 HPFS/NTFS /dev/hda2 2698 3082 3092512+ b W95 FAT32 /dev/hda3 3083 3973 7156957+ 83 Linux /dev/hda4 3974 4864 7156957+ 83 Linux
cfdisk 2.12p Disk Drive: /dev/hda Size: 40007761920 bytes, 40.0 GB Heads: 255 Sectors per Track: 63 Cylinders: 4864 Name Flags Part Type FS Type [Label] Size (MB) ------------------------------------------------------------------------------ hda1 Boot Primary NTFS  18877.02 Unusable 3306.57 hda2 Primary W95 FAT32 3166.74 hda3 Primary Linux ext3 7328.73 hda4 Primary Linux ext3 7328.73
I've now found out that the reason I can't make a swap partition, ot use those 3 Gb, is that all my partitions are primary, and that there is only room for four, so my only option is to repartition completely. I want to take the opportunity to remake my partitions from scratch. This is what I want:
a) shrink hda1 to the minimum, i.e. the OS and the program files, and move all the user files to the fat32-partition (hda2). This should leave this partition with c. 12 Gb
b) grow hda2 to make room for all the files that I want to use under both OSs: c. 9 Gb.
c) make a swap partition - 0.5 Gb should be enough, am I right?
d) the two linux partitions - hda3=/ and hda4=/home - could stay the way they are, I guess.
d) make a new partition for /usr. I've read that that's a good option, because I will then not have to reinstall all my software if/when I upgrade the OS, or install a different distro.
so here are my questions:
1. General question: is there a way for me to clean up this mess without reformatting or deleting a lot of partitions...?
2. Is it possible to move the existing partitions and make use of the currently unusable space by adding it to an existing partition (other than hda1, from which it was originally taken?)
3. Is it possible to turn one of the existing linux-partitions into an extended partition without deleting it first? I.e., is there a command or something whereby I can call, say, hda4 an extended partition, and then add a logical partition under it?
4. The swap partition, should it be a primary partition, or does that not matter?
5. Is my suggested partition scheme sensible? I'm a software junkie, so I want the projected /usr partition to be quite big. This probably means that the root partition can shrink to - what? 3 Gb?
6. I also read somewhere that there were some files under /usr which were needed at bootup, when only / is mounted, so that I perhaps shouldn't place the entire /usr directory on a separate partition - is this correct? In which case I could place the /usr/share and /usr/local in a separate partition and mount them from there? Should they also have each their partitions, or doesn't that matter?
7. While I'm at it, are there other parts of the file system which could use their own partitions?
- Join Date
- Jan 2005
- Chicago (USA)
1. I doubt it.
2. Changing the start locations of partitions other than swap is dangerous, so no.
3. I doubt it.
4. It doesn't matter if any partition is primary or logical, except mabye for Windows (Ionno about that, but you know how bad it is).
5. Don't make a /usr, make a /usr/local. You'll probably run into strange things with different versions between distros with /usr. You should install things that didn't come with your distro to /usr/local (for a tarball made with GNU Autotools, ./configure --prefix=/usr/local will do that). That way distros won't use that space, so there shouldn't be any problems (except you screwing it up and power failures).
6. see 5
7. /boot should be small (<1GB) and not have a journaling filesystem (such as ext2, a journal would be a waste of space). This saves troubles with bootloaders.
I've a 1GB swap partition, but it hardly gets used with .5GB of RAM, even when playing Nexuiz, so .5GB should be enough.
- Join Date
- Oct 2005
Thanks for your replies. The "I doubt it"s for 1. and 3. were what I feared...
5. Is there, then, a way to let Synaptic (I'm on Mepis) know that, and install the packages to /usr/local instead of the default location (usually /usr/share, I guess)? Anyway, good advice.
7. I'm dual-booting, so the bootable partition is hda1, the ntfs partition.
Here's what I'm thinking I might do - I welcome comments:
1. Move all files on the fat32 partition to the ntfs partition while logged in on Windows.
2. Likewise, move all the files in the /home partition (hda4) to the root partition (hda3) while booting from a live CD (or should I make a tar-file out of it? I've had problems with permissions and such before, which I don't want to repeat - but I guess I can copy with -r, -p and -m set, to retain permissions and dates, correct?
3. Delete these two partitions, and make a new extended partition, with logical partitions for /usr/local, the original ones, and a swap partition.
4. The only problem then is hda3, which, unless I do the same with it as with the others, will be lying there, in the middle of the usable area, forcing me to make separate partitions on each side, and forcing their sizes. It's acceptable, I guess, but annoying nonetheless, if I come that far with setting things right, but not all the way.
- Join Date
- May 2004
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