Kam Leo wrote: > On 7/14/07, Mikkel L. Ellertson <mikkel@xxxxxxxxxxxxxxxx> wrote: >> You need to understand the way the partition table works. With a DOS >> partition table, you only have 4 primary partitions. One or more of >> these can be extended partitions. This is partition 1 through 4. If >> you have extended partitions, you can have 1 or more logical >> partitions in the extended partition. The logical partitions >> numbering starts at 5. > > [ref. http://support.microsoft.com/kb/323967/en-us] > Any drive on a Windows-based computer can have a maximum of four > partitions, which can be made up of up to four primary partitions or > which can be made up of up to three primary partitions and one > extended partition. You can divide an extended partition into a number > of logical drives, which extends the four-partition limit. > > [ref. http://support.microsoft.com/kb/41189/en-us] > The maximum number of logical drives that can be contained in an > extended partition is 23. Thus, with an active MS-DOS partition, and > all 23 logical drives (in the extended partition) allocated, this > gives 24 hard-disk drives (23 + 1) that can be used, in conjunction > with other virtual RAM drives, network drives, and floppy-disk drives. > The maximum number of total drives that MS-DOS can use is 26: Drive A > through Drive Z. > One interesting thing is that you can have a Windows extended partition, and a Linux extended partition. Windows will not see the logical partitions defined by the Linux extended partition, but Linux will. From the known partition type table in fdisk: 5 Extended 85 Linux extended I don't have a drive handy with both types of extended partitions, but I have done it in the past. I don't remember putting more then one Linux extended partition, so I don't know if it would work, but I would not be surprised if it did. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
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