Date: Sat, 18 Jan 1997 08:29:18 -0600 From: Dick Olson <rolson@ns.awanet.com> To: freebsd-questions@FreeBSD.ORG Subject: How to create additional swap partition Message-ID: <32E0DE3E.2781E494@ns.awanet.com>
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I have upgraded from 8 to 20MB of physical memory. Based on
recommendations (2xRAM) I need to increase swap space. I have limited
(BSD) file space but I do have some additional disk space (wd1) which
was used as a DOS partition that I could use as a second SWAP partition.
I have tried the following but was unable to boot FreeBSD after creating
the partition.
/stand/sysinstall
customize
create partition
write
crash (lots of error msgs of assorted types)
Deleted partition in DOS
Did MAKEDEV wd1s2x added an tried sysinstall again
HD went into spin frenzy w/ "vnode_pager_input I/O error" etc
unable to boot
deleted created partition in DOS and recovered
Figured I have pushed my luck at this point
Ask for assistance
I have Disk Manager to allow >528 for wd0 and use a bootmgr to use wd0
DOS and wd1 FreeBSD. I was able to boot DOS and deleted the created
FreeBSD partition and was able to recover to original state. I have
tried three times with no success. Read all the manuals, usergroups, FAQ
with no success. I am also using the generic kernel (FreeBSD 2.1.5,
XFree86 3.1.2).
########################
DATA:
#fdisk wd1
******* Working on device /dev/rwd1 *******
parameters extracted from in-core disklabel are:
cylinders=967 heads=16 sectors/track=31 (496 blks/cyl)
parameters to be used for BIOS calculations are:
cylinders=967 heads=16 sectors/track=31 (496 blks/cyl)
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 0 is:
sysid 4,(Primary DOS with 16 bit FAT)
start 31, size 33201 (16 Meg), flag 0
beg: cyl 0/ sector 1/ head 1;
end: cyl 66/ sector 31/ head 15
************************************************
I suspect this is the area I want to use as additional swap partition
(16MB)
The data for partition 1 is:
<UNUSED>
************************************************
The data for partition 2 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 66464, size 413168 (201 Meg), flag 80
beg: cyl 134/ sector 1/ head 0;
end: cyl 966/ sector 31/ head 15
The data for partition 3 is:
<UNUSED>
------------------------------------------------
#disklabel wd1
# /dev/rwd1c:
type: ESDI
disk: wd1s3
label:
flags:
bytes/sector: 512
sectors/track: 31
tracks/cylinder: 16
sectors/cylinder: 496
cylinders: 833
sectors/unit: 413168
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 65536 0 4.2BSD 0 0 0 # (Cyl. 0 -
132*)
b: 54464 65536 swap # (Cyl. 132*-
241*)
c: 413168 0 unused 0 0 # (Cyl. 0 -
832)
e: 61440 120000 4.2BSD 0 0 0 # (Cyl. 241*-
365*)
f: 231728 181440 4.2BSD 0 0 0 # (Cyl. 365*-
832*)
--------------------------------------------------------------
#df
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/wd1a 31775 12710 16523 43% /
/dev/wd1s3f 111943 94282 8706 92% /usr
/dev/wd1s3e 29727 3939 23410 14% /var
/dev/wd0s1 261776 188284 73492 72% /c
/dev/wd1s1 16550 0 16550 0% /d
/dev/wd0s5 140932 93904 47028 67% /e
/dev/wd0s6 129730 86948 42782 67% /f
procfs 4 4 0 100% /proc
------------------------------------------------------------
#swapinfo
Device 1K-blocks Used Avail Capacity Type
/dev/wd1s3b 27232 3644 23524 13% Interleaved
#################################################
That is all I can think to list. Any suggestions, recommendations,
advice would be highly appreciated.
Your Humble Servant.
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