BSOD during the XP installation?

Hello, and thank you for your tutorial. It is very well explained, but I have a couple of errors.

When I try to format the new space from shrinking my main partition, it becomes an Extended Partition Logical Drive instead of a Primary Partition. How do I fix this?

Here is my disk manager setup:

0 - (Hidden) - EISA Configuration
2 - My Book (E: ) - Primary Partition (this is a external USB hdd)
0 - OS (C: ) - System, Boot, Page File, Active, Crash Dump, Primary Partition -
0 - RECOVERY (D: ) - Primary Partition
0 - Unallocated 17.09 GB
5 - Flashdrive (L: ) - Active, Primary Partition

My second error occurred when proceeding to install Windows XP Pro with leaving the partition I plan to install it on unformatted.

The initial CD loading its files works fine until it says it's preparing to load Windows XP, shortly after I get a BSOD. The BSOD says something to the effect of "check your computer for viruses, remove any newly-installed hard drives, run check disk on F (it was either F or L, I can't remember)"

I'm going to try running the installation without the L: Flash drive in now, but if that doesn't work I'd appreciate an answer, even if you don't know what the problem is.

Thanks

Edit: Nevermind, it was CHKDSK /F, not on F.