Hello Pixel, hello everybody,

the famous german comuter magazine "c't" has an article on multi boot
computers in its new number officially published on monday 2000-07-31.

They have a special paragraph dedicated to Linux Mandrake 7.1 and its 
incorrect partition labeling. As I have no M$ 9x or NT on my machine 
I can't confirm the content. But I've tried to translate it in english 
to let you have a look into it.

+-----------------------------------------------------------------------
|Confused Types
|
|By using the extended BIOS functions for harddisk access, Microsoft 
|introduced with Windows 95B a new label for "large" partitions. 
|Partitions to be addressed via LBA are labeld 0x0F whereas 0x05 
|indicates CHS adressing.
|
|Unfortunately, noone in Redmond thaught about possible complications 
|occouring in cooperation with other operating systems. For other 
|systems, e.g. OS/2, older versions of linux or even NT those partitions 
|were invisible. In the meantine those OSes have learned their lesson, 
|but a diffret interpretation of the lables leads sometimes to confusion.
|
|Linux Mandrake 7.1 for example, will install itself on a extended 
|partition as a second OS on a Windows 9x machine, but uses the wrong 
|partition label 0x05. Linux has no problems with that, it uses LBA to 
|access the partition. Microsoft on the other hand, strictly follows 
|their own rules - with consequences: On partitions labeld 0x05 Windows 
|uses the old BIOS-CHS routines without any tests, even if the partition 
|resides after the 1024 cylinder (8GB) fronier.
|
|An extended partition holds logical partitions as a pointered list, 
|each of them pointereing to the next partition. Using correct CHS 
|addressing on the wrong 0x05 label leads to a infinite list of 
|logical partitions. It reaches its end when Windows has no more labels 
|left (normally Z:). As a result Windows can only be restarted in 
|secure mode, but fdisk won't work any more. To thake remedial action, 
|use the linux fdisk to change the partition label from 0x05 to 0x0F.
|
+---------------------------------------- from: c't 16/2000 page 96 ----

the original (german) article can be found here:

  http://www.student.uni-kl.de/~siegel/misc/partition.jpg


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