At 08:38 AM 2/20/2005 +0545, bj wrote:
Hi !

I have a red hat 8.0 & Windows 2000 on a intel box with a 60 GB hard drive .

Only 20 GB has been partitioned into 10 GB of NTFS and 9 GB of Linux , file
id 83 ext 3 and 1 GB of Linux swap , file id 82 .

I want to use some free unallocated space from the remaining 40 GB for my
linux .

But I could not get fdisk (from the command prompt ) to show me the
unallocated space  and partition it .

I could see the unallocated free space when I run KDE hardware browser .

I could find the GUI disk druid too .

So How do I partition the unused free space for my red hat 8.0 .

Which utility do I use ?

When ever  I use  fdisk , and choose option n ( to add a partition ) , it
gives an error message saying that I need extended partition or I need to
delete old partition to create a new one .

But I have 40 GB of un used space on my hard drive.

Please advice .

Thank you for your help in advance .

I have to guess here a bit to fill in the blanks, but I think your problem is an IDE limitation. You listed 4 partitions, and IDE drives are limited to 4 "real" partitions in their true partition table, partitions that can be either primary partitions or include one extended partition. An extended partition can, in turn, be "sub-divided" into more partitions (I think they are called virtual partitions or something like that).


So your setup on your hard disk sounds like it is similar to this one on one of my drives:

        Command (m for help): p

        Disk /dev/hda: 82.3 GB, 82348277760 bytes
        240 heads, 63 sectors/track, 10637 cylinders
        Units = cylinders of 15120 * 512 = 7741440 bytes

           Device Boot      Start         End      Blocks   Id  System
        /dev/hda1               1           6       45328+  83  Linux
        /dev/hda2               7         135      975240   82  Linux swap
        /dev/hda3             136        2718    19527480   83  Linux
        /dev/hda4            2719       10637    59867640   83  Linux

If I try to add a partition to this drive, I get:

        Command (m for help): n
        You must delete some partition and add an extended partition first

But you only mention 3 partitions above, and I don't know if that is a reporting error on your part or an indication of some other problem. So the first thing you should do is check your partition table as I did above (run fdisk and use its p command).

If you have a fourth, unused partition, either delete it and replace it with an extended partition, or simply format and use it if it contains all of the remaining 40 GB in a form you want. (Some hard disks, typically ones used in laptops, have a very small partition that gets used by the OS for some special purpose, I think handling sleep mode, and that might be typing up your fourth partition slot without your knowing it. Just a wild guess there, though.)

If you do not have a fourth partition in the table, then post again, including a report from fdisk providing the info I show above from mine, and maybe I (or someone else here) will be able to spot your problem. Oh, also report the version of fdisk you are using ( fdisk -v) ... if it's an older version, it might have problems with the drive's physical size ... I remember running into that, but years ago.


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