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Conference noted::ibmpc-95

Title:	IBM PCs, clones, DOS, etc.
Notice:	Intro in 1-11, Windows stuff in NOTED::MSWINDOWS please
Moderator:	TARKIN::LINND

Created:	Tue Jan 03 1995
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3023
Total number of notes:	28404

2979.0. "Secondary IDE boot ?" by RSNC::BRUIL (If it's broken we'll fix it) Mon Apr 07 1997 05:11

    
        	Gents,
    
    Following question ;
    
    Situation ; Pentium with two EIDE ports, on both port one disk as
    master, disk on primary port with W95 , disk on secondary W95 osr2 for
    test purpose.
    
    Problem ; I want to be able to play around with osr2 without using my
    first disk.
    What I do is go in the system bios and disable the first disk, setting
    it on "not installed" causing the master on the sec. port to become C:
    When I restart the system to boot from the second disk the boot will
    fail after a few seconds ; bleu screen etc..
    If I move this disk to the primary port the system will boot without
    any problems.
    
    Question ; Can't I boot from the second master ???
    
    
    Ton.

T.R	Title	User	Personal Name	Date	Lines
2979.1	Been there! Done that!	ALFSS1::alfdhcp4_54.alf.dec.com::GARABO	CyberNeuroSurgeon General	`Mon Apr 07 1997 19:18`	12
	I have successfully booted from a master on the secondary IDE using the procedure you describe (i.e., disabling the primary master and slave, in my case). You might look at using FDISK from a floppy to set the primary partition on your primary slave drive to ACTIVE. Also, you may need to write the Master Boot Record. On my system, I had disabled the primary IDE drives, then installed DOS follwed by WIN95 on the secondary master (I, too, used OSR2). Worked like a charm, and no problems booting so long as the primary IDE drives were both disabled.
2979.2	removed ?	RSNC::BRUIL	If it's broken we'll fix it	`Tue Apr 08 1997 05:30`	9
	With primary drives diabled do you mean like I did, disable them in the bios and leave them spinning in the system or did you removed the drives from the primary bus ?? Ton.
2979.3	Disable Primary EIDE and leave drive in system	NETCAD::GENOVA		`Tue Apr 08 1997 20:59`	5
	You can leave the drive in the system, once you disable them in the bios. They won't be seen! /art
2979.4	bios disabling does not always	ANGST::legoe.zko.dec.com::angst.zko.dec.com::marshall		`Wed Apr 09 1997 12:10`	12
	> You can leave the drive in the system, once you disable them in the > bios. They won't be seen! This is not always true. With my system at home (Award bios, Asus XP55T2P4 motherboard) I have tried this and both Windows NT and Linux had no troubles seeing and accessing the drives. It is true that the initial bootstrap has to be on a drive that is enabled and seen by the bios. With Windows NT the partition with the Windows NT root does not even have to be on a drive enabled in the bios. (The partition with ntloader, boot.ini, etc. does.) Chris
2979.5		ALFSS1::alfdhcp4_54.alf.dec.com::GARABO	CyberNeuroSurgeon General	`Thu Apr 10 1997 12:17`	3
	I had disabled the primary master and slave in BIOS without removing them, and then booted a testbed system (which had the beta of OFFICE97) from the secondary master.