rEFInd leaving behind a boot option after the dual boot was removed?

[Timothy P.]

I recently dual booted Ubuntu on my Macbook Pro alongside the existing OS X. I used it for a while and needed to remove it, and I used Disk Utility to delete the partitions. Now, rEFInd has a linux icon still that I can select, and when I boot to it it gives me a black command line that just says "No bootable device found." I tried reinstalling rEFInd, but the linux icon is still there. How do I get rid of it, is it a left behind boot code or something? diskutil list returned this, so clearly there is no extra partitions left behind. What could be wrong?

/dev/disk0

#:	TYPE	NAME	SIZE	IDENTIFIER
0:	GUID_partition_scheme		*256.1 GB	disk0
1:	EFI	EFI	209.7 MB	disk0s1
2:	Apple_HFS	Mac OS X	255.7 GB	disk0s2

[Roderick W. Smith]

The problem is most likely leftover BIOS-mode boot loader code in the disk's Master Boot Record (MBR). The safest way to get rid of this is to edit refind.conf: Uncomment the scanfor line and ensure that hdbios is not among the listed options. (If you want to be able to boot from BIOS-mode external disks or CD-Rs, though, be sure that the relevant options are listed, as described in the comments/documentation preceding the scanfor option line.) If you install another BIOS-mode OS in the future, you'll need to either comment out the scanfor line or add hdbios to its options.