Shrinking 4 parititions on a new HP laptop
Julian H. Stacey
jhs at berklix.com
Tue Oct 25 00:55:58 UTC 2011
Hi hackers@
A new purchased HP laptop (pavilion entertainment PC dm3
http://reviews.shopping.hp.com/8843/dm3t_series/hp-pavilion-dm3t-customizable-notebook-pc-reviews/reviews.htm
had all 4 partitions occupied with Windows 7 Home Prem OA.
(Maybe the shop did that)
I want just 1 of the 4 fdisk partitions with an MS slice (for h/w
test mainly), & the other 3 with FreeBSD slices (2 boots of different
release & a large common UFS as usual. I've done that often before,
not asking for help on that, but normally the PC just uses a single
fdisk partition so it just a case of shrinking it & allocating the
other 3.
This is a bit trickier, I need to figure what all the other partitons
are for, & how to merge/ remove them down to one.
So first I shrank the main NTFS from 223 G to 65G (for now) &
rebooted MS & it still boots MS,
Next I need to copy data from spare Fdisk F1, F3, F4 partitions to main F2,
leaving the others free for FreeBSD (& also I'll need to tell
Fdisk precisely how big my new shrunken F2 NTFS is).
Maybe one of you has insight what the partitions might be for at present ?
It has a 200M F1 active, then F2 is the main MS FS of most of disk.
I wonder why they do that ?
For recovery or repair ?
Or to later allow an encrypted F2 OS booting from another
smaller F1 OS first ?
I wonder if I can safely merge F1 & F2 ?
Then on F3, HP used 12.6 of 15G for their own software as hardware
manufacturer. (Stuff I'll want to move to F2, cos I need
partitions for BSD) Not sure how I'll move that tree (tar
I guess as I dont know modern MS or trust any MS) (maybe
insert a join command if MS still have that (opposite of
mount, effectively) to keep the HP seperate yet have paths
under MS working.
Then F4 is taken too,
Backup stuff maybe, or suspend ?
My notes chronologically as I worked:
--------------
MS My Computer says
Local Disk (C:) 176 Gig Free of 218 GB
RECOVERY (D:) 2.39 GB Free of 14.5 GB
HP_TOOLS (E:) 92.5 MB Free of 99.1 MB
Boot a USB image
fdisk /dev/ad4
Partition 1 Sysid 7,NTFS etc 199 M Active
start 2048 size 407552
Partition 2 Sysid 7,NTFS etc 223305 M
start 409600 size 457328640
Partition 3 Sysid=7,NTFS etc 14866 M
start 457738240 size 30445568
Partition 4 Sysid 12,DOS/Win-95 32 bit FAT 103 M
start 488183808 size 211312
The numbers above add up OK
dc: 2048 407552 + p 409600 457328640 + p 457738240 30445568 + p
488183808 211312 + p 488395120
dmesg announced number of sector for USB da0 but not for ad4.
dmesg | grep ad4 # 238475 MB WDC WD2500BEKT UDMA100 SATA 3Gb/s
cd /dist/sbin
kldload /dist/boot/kernel/ntfs.ko
mount_ntfs /dev/ad4s1 /lap/1 ; du -s -k /lap/1 # 25 M
mount_ntfs /dev/ad4s2 /lap/2 ; du -s -k /lap/2 # 48.098 M
mount_ntfs /dev/ad4s3 /lap/3 ; du -s -k /lap/3 # 12,641 M
mount_msdosfs /dev/ad4s4 /lap/4 ; du -s -k /lap/4 # 6.7 M of 101 M
df
1Kblocks Used Avail Capacity
s1 203775 28815 174960 14%
s2 228664319 43896379 184767940 19% #
s3 15222783 12708523 2514260 83% # ./hp/
s4 101562 6762 94800 7% # ./$RECYCLE.BIN
# ./Hewlett-Packard
Analysis with dc shows F1,F2,F3 fdisk partition entries each 2x512
bytes more than df shows as size, but with F4, The DOS FS within
the fdisk partiton is considerably smaller:
203775 2 * p 407550 # fdisk shows 407552
228664319 2 * p 457328638 # fdisk shows 457328640
15222783 2 * p 30445566 # fdisk shows 30445568
101562 2 * p 203124 # fdisk shows 211312
umount /dev/ad4s2
/dist/usr/local/sbin/ntfsresize -n -s 65G -v /dev/ad4s2
/libexec/ld-elf.so.1: Shared object "libublio.so.1" not found
Discovered make.conf CFLAGS += -static insufficient for sysutils/ntfsprog
On cross compile host:
file /usr/local/sbin/ntfsresize
/usr/local/sbin/ntfsresize: ELF 64-bit LSB executable,
x86-64, version 1 (FreeBSD), dynamically linked
(uses shared libs), for FreeBSD 8.2, stripped
cd /usr/ports/sysutils/ntfsprogs
unsetenv NOCLEANDEPENDS
make clean
grep -i static /etc/make.conf
CFLAGS += -static
make
xs make install package
===> ntfsprogs-2.0.0_1 depends on shared library: ublio.1 - found
file /usr/local/sbin/ntfsresize
/usr/local/sbin/ntfsresize: ELF 64-bit LSB executable,
x86-64, version 1 (FreeBSD), dynamically linked
(uses shared libs), for FreeBSD 8.2, stripped
cd /usr/ports/devel/libublio
make package
cd /usr/ports/packages/All
ls -l libublio-20070103.tbz ntfsprogs-2.0.0_1.tbz
Copy across on another ISB stick & install...
/dist/usr/local/sbin/ntfsresize -s 65G -v /dev/ad4s2
adjusted bm_size: 1983648->1984000 # maybe that give
a clue for new fdisk size.
reboot, usb sticks out
MS chkdsk runs automatically
-------------------------------------------
Cheers,
Julian
--
Julian Stacey, BSD Unix Linux C Sys Eng Consultants Munich http://berklix.com
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