Sharp Zaurus SL-C3000 Instruction Manual page 41

my Zaurus SL-C3000 and SL-C3100
Disk /dev/hda: 4095 MB, 4095737856 bytes
16 heads, 63 sectors/track, 7936 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Device Boot Start End Blocks Id System
/dev/hda1 1 256 128992+ 82 Linux swap
/dev/hda2 257 2790 1277136 83 Linux
/dev/hda3 2791 7935 2593080 c Win95 FAT32 (LBA)
In order to do this, you need to replace /root/etc/rc.d/rc.rofilesys after you have remounted / as
rw. You also need to remove the NotAvailable file from the unmounted /hdd1 and /hdd2.
I have successfully used parted to shrink /hdd3 dynamically without destroying my existing files but
backing up the files is still recommended just in case. Then I used fdisk to recreate /hdd1 and
/hdd2 with their new sizes and formatted them using mkswap and mk2fs -j respectively.
Now when the C3100 boots up, it automatically mounts /hdd3 as before but it won't erase /hdd3 on
a factory reset, and it also mounts /hdd2 as ext3 if it exists. Additionally, it also enables the 256MB
swap partition (formerly /hdd1) and mounts tmpfs as 2MB instead of 1MB.
MicroDrive Performance
The C3000 and the C3100 both have a 4 GB CF MicroDrive internally, which is used as its harddisk
to store data. Since a CF Flash card is generally faster than a MicroDrive, it would make the Zaurus
faster if the CF MicroDrive is replaced with a CF Flash card. This makes sense for the C3000 where
the applications and binaries are stored on the MicroDrive and there is a slight delay for the
MicroDrive to spin up when it has gone into powersaving mode after some time of disk inactivity.
However, for the C3100 it would not make such a big impact on application performance since they
actually are on the flash memory instead of the MicroDrive. Still, if the application is also stored on
the MicroDrive, ie /hdd3 is used for installing additional applications such as PocketWorkstation and
a large swapfile, then it would make sense too.
To do this, you would need a CF Flash card to replace the MicroDrive with. Make sure the Flash card
you are using has a similar capacity to the MicroDrive (4GB would be good, 2 GB is managable and
bigger ones should be better). However, make sure the Flash card you are using is faster than the
current MicroDrive inside the Zaurus (the Z has a 4GB Hitachi MicroDrive inside), otherwise you
won't be gaining anything.
What you want to do is mirror the 4GB MicroDrive to the Flash card. You can d o this by inserting
the Flash into the CF slot on the Zaurus and partition it ex actly like the MicroDrive using fdisk.
Then use the dd command to copy each partition, ie hdd1, hdd2 and hdd3. Unmount hdd2 and
hdd3 before you copy them or remount them to read-only. The other partitions are located in the
internal flash memory (also called Nand). Alternatively, you can also use parted to copy the entire
partition from one disk to another. Once this is done, you can open up your Z and swap the two
drives. This will void your warranty, so make sure you understand and know what you are doing. It
is your own responsibility if you break your Zaurus or any parts of it. Finding replacement parts will
be extremely difficult unless you live in Japan, so be careful and consider the consequences of your
actions, or modifications. Let me say it again. If you open your Zaurus up to replace parts, you void
your warranty. If you break something during the process, then you are on your own since you just
voided your warranty.
Zaurus Backup
You should always backup your system since that is the only way to recover if something goes
wrong.
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http://www.users.on.net/~hluc/myzaurus/
16/09/2007 12:23