Disk to the maxx: How to reclaim "lost space"?

[Adem]

I have a 165 GB IDE drive (/dev/hda) in a x86_64 Debian 4 machine,
of which actually only about 26 GB is used by files.
Some weeks ago I had used parted and tried 
to make room for another partition by shrinking 
the primary partition from 159 GB to 90 GB,
but during the process parted unfortunately reported errors
and quit (sorry, I don't remember what the error message was).
I was very glad that the data was not damaged.
But since that failed attempt the command "df -h" says 
that the partition size is 90 GB. OTOH the other tools (parted and fdisk) 
continue saying 159 GB.
I'm no longer interessted in making another partition,
instead I would like to get the full capacity back.
So, to make a long story short, my question is:
How do I reclaim the "lost space" :-), so also "df -h" sees it?
I would prefer not reformatting it :-)

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comp112:/home/admin2# uname -a
Linux comp112.local 2.6.26-1-amd64 #1 SMP Sat Nov 8 18:25:23 UTC 2008 x86_64 
GNU/Linux

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comp112:/home/admin2# parted /dev/hda
GNU Parted 1.8.8
Using /dev/hda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print all
Model: HDS722516VLAT80 (ide)
Disk /dev/hda: 165GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End    Size    Type      File system  Flags
 1      32.3kB  159GB  159GB   primary   ext3         boot
 2      159GB   165GB  5404MB  extended
 5      159GB   165GB  5404MB  logical   linux-swap


(parted) quit

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comp112:/home/admin2# fdisk /dev/hda

The number of cylinders for this disk is set to 20023.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/hda: 164.6 GB, 164696555520 bytes
255 heads, 63 sectors/track, 20023 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x0005e118

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1       19366   155557363+  83  Linux
/dev/hda2           19367       20023     5277352+   5  Extended
/dev/hda5           19367       20023     5277321   82  Linux swap / Solaris

Command (m for help): q

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comp112:/home/admin2# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/hda1              90G   26G   60G  30% /
tmpfs                 881M     0  881M   0% /lib/init/rw
udev                   10M   80K   10M   1% /dev
tmpfs                 881M     0  881M   0% /dev/shm
comp112:/home/admin2#

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