The main problem was to shrink the Windows partition, because the silly swap file is exatly in the middle of it.
I went the radical way and did the following:
- Created the Recovery DVDs with the Acer Tools
- Wiped the whole HDD with Gentoo Live DVD and fdisk
- Booted into the Windows Recovery DVDs
- Set the new size of the Windows Partition during install
I have a 1TB HDD in my Acer Aspire.
My partitiontable looked like this after the Windows reinstall:
Partition 1: 15GB: Acer Stuff, Recovery, Drivers Partition 2: 100MB: Windows Boot and RecoveryPartition Partition 3: 300GB: Windows 7 Partition 4: ~700GB: free space
I also wanted a partition to share files between Gentoo and Windows, but wasn't sure about the filesystem.
I've created a NTFS partition after the install of Gentoo. The Linux NTFS support is pretty good and I won't have to fight with FAT limits.