Anti aliased borders after deleting area in photoshop

Basically what I did is use the pen tool to select the little triangle in the empty space you see to the left, change it to selection, and then hit the delete key. (initially, the entire thing was white.) As a result there is an anti aliased margin after deleting the white area. How do I stop the anti aliasing from occuring when I press delete?

I had this problem earlier. My friend helped me to resolve it by telling me to check out feathering settings. It worked then, but since then it's come back. I checked feathering this time (that was the problem last time) and it's at 0 px, anti-aliasing is also set to off. As such I currently have no idea what could be causing it. How do I get it to delete cleanly?

Just disable feathering at all (should be a checkbox) if you want pure pixel cuts.

Also check photoshop settings itself, and maybe in/decrease colordepth or disable alpha channels / masking somehow.

Or use GiMP, really professional photoshop clone but then freeware: http://www.gimp.org

I think there's an option that's like "outline/image/something softening" which causes the anti-alias effect, but my version of Photoshop is from 2002 so it may or may not still be the case.

Work around try using the eraser in block mode. Click at one spot and hold shift while clicking another spot. This will erase a line between the two locations. You can draw a triangle that way.

Thanks for the tip, XTOTHEL. It's a lot less clunky than I first thought, but I tend to work mostly with the pen tool so I'd still like to find out what's causing my selected areas to become anti aliased upon deletion.

Devil, could you show me where the checkbox is? I'm not sure which one you're referring to, and I'm not sure if I've already unchecked it. ):

Thanks for the tip, XTOTHEL. It's a lot less clunky than I first thought, but I tend to work mostly with the pen tool so I'd still like to find out what's causing my selected areas to become anti aliased upon deletion.

Devil, could you show me where the checkbox is? I'm not sure which one you're referring to, and I'm not sure if I've already unchecked it. ):

It should be the one on the cutting tool / lasso tool menu that shows when you select the tool (in the top of Photoshop, depending on the version you're using).

But yeah, the chance that you have disabled that one already is large.

): That's sad.

If it is any help though, this is what my settings look like for the relevant tools:

so I wake up in the morning feeling like p.diddy and opened up photoshop...

so when you use the pen tool to make the triangle, right click on the path and select "make selection", then a panel pops up, uncheck "anti-aliased" and done.

OH MY GOD I CAN'T BELIEVE I MISSED THAT.

I just press ok whenever it shows up, something I learned to do by habit because there was so much about Photoshop I didn't understand when I first started using it. Guess that habit came back to bite me in the rear.

Thank you sir.