Date: Sat, 20 Jun 1998 16:26:28 +1000 From: Robert Chalmers <robert@chalmers.com.au> To: djv@bedford.net, freebsd-questions <freebsd-questions@FreeBSD.ORG> Subject: Re: FINNALY - Re: Continuing the sd1 disklabel/disktab do-it-by-hand saga Message-ID: <358B5614.135ACFA4@chalmers.com.au> References: <199806200051.UAA16384@lucy.bedford.net> <358B4FEC.ACF56300@chalmers.com.au>
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Sorry,
Not quite finished...
It lies. The 4158234 that disklabel returns, does not work with the disklabel
last entry, e. You have to make the last partition fit inside the boundary of
the original 4110000 that scsiformat returned.
I believe that this may be because of the spare cylinders that the system keeps
for bad tracks etc, in reserve. VERY tricky.
only the LAST partition size need be changed. Indeed, ifyou make partition c
the smaller size, 4110000 then you run out on the partition e. You have to make
c the bigger, and e the smaller. It ends at 4110000, not 4158234.
I'm going for a drink!!!
bob
New disklable returned;
# /dev/rsd1c:
type: SCSI
disk: c2490a
label: sd1s1
flags:
bytes/sector: 512
sectors/track: 107
tracks/cylinder: 18
sectors/cylinder: 1926
cylinders: 2159
sectors/unit: 4158234
rpm: 6400
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
5 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 2055000 0 4.2BSD 1024 8192 0 # (Cyl. 0 - 1066*)
b: 336640 2055000 swap # (Cyl. 1066*- 1241*)
c: 4158234 0 unused 1024 8192 # (Cyl. 0 - 2158)
d: 894873 2391640 4.2BSD 1024 8192 0 # (Cyl. 1241*- 1706*)
e: 823487 3286513 4.2BSD 1024 8192 0 # (Cyl. 1706*- 2133*)
new disktab;
#
c2490a|Compaq C2490A SCSI:\
:ty=winchester:rm#6400:dt=SCSI:ns#107:nt#18:nc#2159:\
:se#512:\
:oa#0:pa#2055000:ba#8192:fa#1024:ta=4.2BSD:\
:ob#2055000:pb#336640:bb#8192:fb#1024:tb=swap:\
:oc#0:pc#4158234:bc#8192:fc#1024:\
:od#2391640:pd#894873:bd#8192:fd#1024:td=4.2BSD:\
:oe#3286513:pe#823487:be#8192:fe#1024:te=4.2BSD:
---
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