[NTLUG:Discuss] Dual booting Linux

[Michael Barnes]

I have a machine loaded with SUSE 10.0 and I want to set up dual boot 
with CentOS. The machine has two hard drives, a 37GB (sda2) and a 250 GB 
(sdb1). (sda1 is a swap)  I want to split the 37GB(sda2) into two 
partitions, one for the existing SUSE and the other for CentOS.  The 
current partitions are ext3.

I am trying to do this with Knoppix5 and qtparted.  At first it would 
not because of the ext3 FS.

Per instructions I found on the web, I changed sda2 to ext2.  Now the 
resize window will come up for sda2.  However, when I try to resize, I 
get the error "An error happened during ped_file_system_open call." 
When I looked this up on the web, all the references are to resizing a 
Windows partition and suggest running scandisk, which usually then 
allows qtparted to resize.
Since this never had Windows on it, I can't run scandisk.

What do I do instead?

Ideas appreciated.


Michael