Sounds like your grub menu is mapped to the wrong drive letter if your dropping to busybox. Was there a new kernel added? or else a program did it (startup manager i.e) You could try to turn on computer. Wait for grub screen. Hit the arrow keys just to stop it from automatically booting the default. Make sure the fist line is highlighted (Mint). You will see at the bottom of the screen the boot options.. (ro quite splash should be at the end of your default kernel line). arrow left until you see hda5 on that line.. change this to say sda5 (should say somthing like root=/dev/sda5) Hit enter and see if that works.
Edit: read that too quick.. I see that you did say you have a new kernel. If this was your problem you will want to make this permanet by editing your grub menu.lst... post back if you need help with that.
Last edited by T-L
on Mon Jul 07, 2008 9:21 pm, edited 2 times in total.