I have an Acer Travelmate 5612 laptop. It has dual boot Windows 7 and Hackingtosh 10.6.8 in the HDD inside computer. Through external USB connection and hard drive enclosure, I managed to installed Ubuntu 11.10. into second hard drive with 80Gb free space reserved for Centos 6.2. I tried to install Centos 6.2 into free space of hard drive, I saw disk reading error.
Correct reading should be: (Internal first HDD) Dual boot
/dev/sda1 (ntfs Windows 7)
/dev/sda2 (hfs+ Mac OSX)
(External USB 2nd HDD)
/dev/sdb1 (ext4 Ubuntu 11.10)
/dev/sdb2 ( free)
Through Centos 6.2 installer disk partitioning I have the following disk readings:
/dev/sda1 (ext 4 -Ubuntu)
/dev/sda2 (free space)
/dev sdb1 (ntfs Windows 7)
/dev/sdb2 (hfs+ Mac)
I have to abort the installation I am afraid that if I install Centos 6.2 into free space, I won't be able to boot Windows 7 and Mac OSx. Maybe with proper grub rescue, I may be able to boot Ubuntu. If Centos behaves like Ubuntu, it should pick up Ubuntu grub2 boot entry and allow me to select which Linux I elect to boot through boot menu.
I am new to Centos and Have no idea whether this is normal for Centos installation and disk partitioning. Any advice and explanation and how to do it would be highly appreciated. My USB drive connection is consider external hard drive. Mac and Linux can be installed to external hard drive and I assume Centos as well. Only Stupid Windows cannot be installed into external hard drive. Although the geniuses at Redmond said Windows 8 will be able to install to external hard drive.