Path: utzoo!attcan!uunet!portal!cup.portal.com!Chuck_M_Grandgent
From: Chuck_M_Grandgent@cup.portal.com
Newsgroups: comp.os.minix
Subject: fsck, diskio, fdisk, & large(r) disks
Message-ID: <12985@cup.portal.com>
Date: 28 Dec 88 01:43:02 GMT
Organization: The Portal System (TM)
Lines: 23

I've probably been guilty of not reading ALL the mail, but here's              
the situation:                                                                 
IBM PC Minix 1.2, partially updated to 1.3, working fine, DOS 3.1.             
I've just gone and switched from a 20MB type-2 disk (Fuji), to a               
40MB type 40 (Seagate ST-251).  Had a devil of a time, but now working         
fairly well.                                                                   
1) Successfully used the new changes to fdisk to specify number of heads       
on ST-251 (6).                                                                 
2) Successfully used the old 'vol' and 'tar' to do a multi-volume floppy       
save of Minix on 20MB disk and restore on 40MB disk (not entirely painless)    
3) All working OK, except fsck, which "can't handle partitions with            
sector numbers > 65336 (unsigned int).                                         
Gather the following changes necessary: change part_offset in fsck.c           
to a long instead of unsigned int, and then also routine diskio(), which       
is assembler needs to be changed to handle a long sector offset.               
Currently using BIOS function for diskio(), would have to use a 
different one I suppose.
I'm really nervous about running without being able to use fsck,
what do I need to do ?
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sun!portal!cup.portal.com!chuck_m_grandgent
Chuck Grandgent, K1OM, AEG Modicon, Industrial Automation Systems Group
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