On 09/16/2011 08:10 AM, Jerry Geis wrote:
On 09/16/2011 06:59 AM, Steve Clark wrote:
On 09/15/2011 06:03 PM, Jerry Geis wrote:
I think the fdisk in 6 tries to align on 4k boundaries. Does fdisk -c do the
same thing?
Scott - thanks I just tried -cu and same result.
jerry
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have you tried sfdisk?
Steve - I had not - but asking sfdisk to list the device on centos has
the wrong geometry to start
with just like fdisk does. it should be 255 heads and 63 sectors.
sfdisk -v
sfdisk (util-linux-ng 2.17.2)
sfdisk -l /dev/sde
Disk /dev/sde: 1022 cylinders, 247 heads, 62 sectors/track
Warning: The partition table looks like it was made
for C/H/S=*/255/63 (instead of 1022/247/62).
For this listing I'll assume that geometry.
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sde1 * 0+ 974- 975- 7830616+ b W95 FAT32
end: (c,h,s) expected (974,221,63) found (1023,254,63)
/dev/sde2 0 - 0 0 0 Empty
/dev/sde3 0 - 0 0 0 Empty
/dev/sde4 0 - 0 0 0 Empty
----------------
This is centos 5
sfdisk -v
sfdisk (util-linux 2.13-pre7)
sfdisk -l /dev/sdb
Disk /dev/sdb: 974 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdb1 * 0+ 851 852- 6843658+ 83 Linux
/dev/sdb2 852 973 122 979965 82 Linux swap / Solaris
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty
Hmm...
I have an automated script that installs C6 on devices - I have used it on sata
drives, ssds and
CF. The first thing I do is dd of=$DRIVE if=/dev/zero bs=1024 count=1 to wipe
out the existing
partition table then I do
# 1MB = 2048 512byte sectors
DSIZE=`sfdisk -s -uS $DRIVE`
DSIZE=$((DSIZE*2))
Log "DSIZE is $DSIZE"
#OFFSET=2048
OFFSET=8
SWAP=1000000
BOOT=600000
PSIZE=$(((DSIZE-(OFFSET+BOOT+SWAP+10))/2))
PSIZE=$((PSIZE+(PSIZE%2)))
PSTART=$((PSIZE+BOOT+SWAP+OFFSET))
Log "PSIZE is $PSIZE"
Log "PSTART is $PSTART"
# partition the disk for /boot, swap, /
#/sbin/sfdisk -q -uS $DRIVE << EOF
#8,600000,L,*
#,1000000,S
#,,L
#EOF
/sbin/sfdisk -f -q -uS $DRIVE << EOF
$OFFSET,$BOOT,L,*
$((OFFSET+BOOT)),$SWAP,S
$((OFFSET+BOOT+SWAP)),$PSIZE,L
$PSTART,,L
EOF
I am creating two linux partitions and a swap partition.
The swap is fixed and the two linux partitions are approximately
equal.
I have had no problem booting C6 after doing this.
--
Stephen Clark
*NetWolves*
Sr. Software Engineer III
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.cl...@netwolves.com
http://www.netwolves.com
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