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Received: by minnie.vk1xwt.ampr.org with NNTP id AA309 ; Sun, 31 Jan 93 14:02:24 EST Newsgroups: comp.unix.bsd Path: sserve!manuel.anu.edu.au!munnari.oz.au!spool.mu.edu!agate!tfs.com!julian From: julian@tfs.com (Julian Elischer) Subject: Re: [386BSD] How to disklabel the BSD-partitions ? Message-ID: <1993Jan30.194427.13162@tfs.com> Keywords: 386BSD,disklabel,partition Organization: TRW Financial Systems, Berkeley, CA - 94704 References: <1kbco9INNm5m@rs2.hrz.th-darmstadt.de> Date: Sat, 30 Jan 1993 19:44:27 GMT Lines: 107 In article <1kbco9INNm5m@rs2.hrz.th-darmstadt.de> kehr@rs3.hrz.th-darmstadt.de (Roger Kehr) writes: > > Hi folks, > >I've got a Conner-3540 with an Adaptec-1542B as HD-System. >I want to install a MS-DOS-partition about 160MB (I really need it !) >and want to spend the rest for 386BSD. > >I made two partitions with MS-DOS' fdisk, changed BSD-Id to 0xA5 and >installed DOS and later the BSD-Partition with the Tiny-Bootdisk. > >Everything works fine for me. I assume this means you ahve already a label on there, just not exactly what you want.. > >Now I want to divide my BSD-partition into > a: /root 40MB > b: swap 32MB (does it have to be b: ?) Strictly speaking, no, but don't chance it.. use b until you know what you're doing. > g: /usr 60MB > h: /home 160MB >something like that... > >My Questions are : > >1) how to disklabel my partitions ? > I think it should work with the disklabel-command e.g. > disklabel -e -r as0 > and enter the new values. yes, THAT should work. assuming you have vi... it uses vi to edit the table. (actually $EDITOR) > >2) What should I enter in the row cpg and what means cpg ? > For the swap b: and c: i don't need to put in anything ? > In a: I found the value 16 for cpg. What does that mean ? > cyl per group.. defaults to 16, (use 16, possibly leave blank) >3) If I put BSD as the first DOS-fdisk-partition I find > an offset of 32 sectors after installation of BSD. > Is this the offset for the bootsectors ? > If I install BSD on the whole drive there is no offset of > 32 sectors. 386bsd (on some disk types) must start on a track boundary. if there is a DOS bootblock, (you have to have have one if you've got more than one type of partition) then it takes up the first block of the first track so 386bsd moves up to the next track. > >4) Install with the Tiny-Bootdisk gives me 10000 sectors of > swap-space but the beginning of the swap-space (offset) isn't > directly behind the partition a:. Why is there something left > out ? > no idea >5) What to enter fsize and bsize (512,2048) 386BSD did set on > Quantum-ProDrive105-SCSI and on my Connor it was set to (1024,8192). > Which one to take ? > 1024/8196 is the most efficient in terms of cpu utilisation (speed) but 4096/512 saves a LITTLE space (on average 512 bytes per file) take your choice.. (I run both) >6) After Tiny-Installation my Interleave was set to 0, but when I tried > to change the label it said Interleave 0 is wrong ! Shall I set it to > 1 as on the ProDrive105 ? yes > >7) Is there a difference if I put the MS-DOS partition before the > BSD-partition ??? not really, MSDOS may be able to use that first track. The main difference is on LARGE drives, where the BIOS is incapable of reaching past 1GB (no matter how you translate the drive). DOS must be all below that address. >I looked up the FAQ but found only something about the installation >on the new partitions, but not how to label them. > >I haven't found answers th these questions by now, cause I'm new >to 386BSD. If anyone of the wizards could help me (and some of my >friends too) would be great. > > julian +----------------------------------+ ______ _ __ | __--_|\ Julian Elischer | \ U \/ / On assignment | / \ julian@tfs.com +------>x USA \ in a very strange | ( OZ ) 2118 Milvia st. Berkeley CA. \___ ___ | country ! +- X_.---._/ USA+(510) 704-3137(wk) \_/ \\ v