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Multibooting and Partitioning Experiments

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tomos:
on a personal note - in response to Wolf re germany!on a personal note -
Hi tomos,

do you miss Ireland? How do you cope with all those humor-free Germans (me included)? I am not spying on you but I have found your post whilst reading the thread "OK - lets get to know each other... who are you, what do you do, where from?". I might introduce myself properly over there as well, but not today.-wolf.b (October 22, 2007, 01:16 PM)
--- End quote ---

I think Germans can be a bit stoic when they dont know you - prob depends where they from too -
Saarlanders have a reputation for humour & friendliness,
here in Pfalz I find people very friendly if you talk to them. Maybe they're a bit reserved otherwise  :)
Once I visited Köln (just for a day) & everyone I met was really friendly & cracking jokes - they deserve their witty/humerous reputation

And, funny, I only miss Ireland when I'm in Ireland - good sign  :up:

re the rest: I'm learning  :up:  :)


wolf.b:
Hi Carol Haynes,

I have tested my Windows 98 SE again, just to be sure. It is installed on a logical drive. That logical drive is located 12 GB past the start of the drive.


--- ---First physical sector = 25,430,958   (Cyl 1,583, Hd 1  , Sect 1)
Last  physical sector = 29,623,859   (Cyl 1,843, Hd 254, Sect 63)

It boots OK. :) I have no boot loader, I used fdisk /mbr (MSDOS version 7.1). That loads IO.SYS et al. (MSDOS version 7.1) in the boot process, which gives me a DOS prompt. Then I type "win" to start E:\WINDOWS\win.com (Win98SE deutsch). No special software, not even an AUTOEXEC.BAT file gets involved.

Sorry for my stupid question (foreigner), but is the "first block of a hard disk" the same as the first physical sector? If yes, there could be a difference between German and English Win98. I don't have Win98 in English, so I can't test. Or is it the Second Edition of Win98 that enables me to do that?


Greetings
Wolf

Carol Haynes:
First block / first physical sector are the same.

Interesting because I'm sure Win98SE actually said it need to install below the 8Gb boundary. I am pretty sure it said it needed to install in a primary partition too. If you got it working good on you!

Having said that - something odd is going on on your hard disk ... you are only supposed to be able to have 4 primary partitions (and that includes the extended partition which holds the logical partition). according to your diagram above you have 6 primary partitions plus an extended partition! If that is the case it isn't normal and must have been set up in an unusual way ???

wolf.b:
Hi Carol Haynes,

well the way I see it is this: You (I, rather) can have any number of primary partitions on a hard disk, that you (I) like. But you are (I am) limited to mention a maximum of 4 of those inside the master boot record's partition table. The laptop that I used when starting to experiment, has got today a total of 20 primary partitions, including one extended partition. On that I have 21 logical drives. I have written a batch file that makes use of the following include file:


--- ---/* RECORDS.R */
/* edited by Wolfgang Bernady */

/* -------- Primary Partitions ------------------------------------------ */
primary:
   Password = "01 01 00 06 EF 3F 00 3F 00 00 00 D1 3A 00 00"
   BootMan = "00 01 01 06 EF 3F 01 10 3B 00 00 10 3B 00 00"
   BootCD = "00 01 02 06 EF 3F 02 20 76 00 00 10 3B 00 00"
   Zyl_03 = "00 01 03 06 EF 3F 03 30 B1 00 00 10 3B 00 00"
   Zyl_04 = "00 01 04 06 EF 3F 04 40 EC 00 00 10 3B 00 00"
   Boot50 = "00 01 05 06 EF 3F 05 50 27 01 00 10 3B 00 00"
   Boot622 = "00 01 06 06 EF 3F 06 60 62 01 00 10 3B 00 00"
   Boot710 = "00 01 07 06 EF 3F 07 70 9D 01 00 10 3B 00 00"
   Win311 = "00 01 08 06 EF 3F 0F 80 D8 01 00 80 D8 01 00"
   Zyl_16 = "00 01 10 06 EF 3F 17 00 B1 03 00 80 D8 01 00"
   Zyl_24 = "00 01 18 06 EF 3F 1F 80 89 05 00 80 D8 01 00"
   Zyl_32 = "00 01 20 06 EF 3F 27 00 62 07 00 80 D8 01 00"
   Zyl_40 = "00 01 28 06 EF 3F 2F 80 3A 09 00 80 D8 01 00"
   Zyl_48 = "00 01 30 06 EF 3F 37 00 13 0B 00 80 D8 01 00"
   Booter = "00 01 38 06 EF 3F 3F 80 EB 0C 00 80 D8 01 00"
   Boot = "00 01 40 06 EF 3F 47 00 C4 0E 00 80 D8 01 00"
   MiniWin = "00 01 48 06 EF 3F 8C 80 9C 10 00 50 EB 0F 00"
   Internet = "00 01 8D 06 EF 7F 16 D0 87 20 00 A0 D6 1F 00"
   Erweitert = "00 41 17 0F EF FF FF 70 5E 40 00 D0 CE D7 01"
   SaveToDisk = "EF FF FF A0 EF FF FF 40 2D 18 02 30 62 04 00"
return

/* -------- Logical Partitions ------------------------------------------ */
logical:
   Dateien =  4218480
   E =  5624640
   F =  5639760
   G =  5654880
   H =  5670000
   I =  5685120
   J =  5700240
   K =  5715360
   L =  5730480
   M =  5745600
   N =  5760720
   O =  5775840
   P =  5790960
   Q =  5806080
   Werkbank =  5821200
   Win98 =  7907760
   Spiele =  9994320
   Erwin = 12080880
   Freigabe = 14167440
   Goodies = 16254000
   Hilfe = 33052320
return

/* ---------------------------------------------------------------------- */

The first section is a collection of those 15 bytes per partition that I need to remember to mention it in the MBR. My little tool can be called like this
--- ---patchmbr 1 Boot710 Leer Erweitert SaveToDisk

I this example it will take the strings from the variables Boot710, Leer, Erweitert, SaveToDisk (as defined in records.r), then prepend "80 " to the string No 1, then prepend "00 " to the other strings. Finally it calls DEBUG.EXE to update the MBR using redirection, like this:
"debug < %TEMP\$debug$.dbg > NUL"
Please note that I use 4DOS (open source, freeware) as a primary shell, so this is a valid syntax. I hope I make any sense. I have not translated any variable names from the code to English, but that should not be a problem, I think.


Greetings
Wolf

Carol Haynes:
Ah - that explains ... but it isn't exactly a standard way to deal with the limitations. Good job though - it's impressive.

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