External Hard Disks


The 20GB hard disk inside the Acer isn't quite big enough for me, and doesn't really allow for any redundancy. I bought an external case for a HDD. This connects to the laptop through the IEEE1394 (firewire) port. I put an existing 60GB (ATA) disk into this.


In order to use the SBP2 device (the hard disk), we need to insert some modules into the kernel. I did this by editing the /etc/modules file. I added the following lines:
The details of what this does can be found in the .c file for the sbp2 driver.


The SBP2 device is a scsi device. In the external case it is an ATA drive but the driver talks to it through scsi. Hence my two paritions on the external disk are known as /dev/sda1 and /dev/sda2 respectively.

In order to allow these to be mounted easily, I added the following two lines to the /etc/fstab file:
/dev/sda1 /external1 vfat rw,noexec,user,noauto,nodev,async,umask=000,quiet 0
/dev/sda2 /external2 vfat rw,noexec,user,noauto,nodev,async,umask=000,quiet 0
I also created the directories external1 and external2.