# KillSegment ## Description Delete segment. IDA will ask your the permission to disable the addresses occupied by the segment. If you allow this operation, all information about the segment will be deleted. In other words, IDA will discard the information about instructions or data, comments etc. If you check the "disable addresses" checkbox, IDA will mark the addresses occupied by the segment as "nonexistent" in the program. You will lose *ALL* information, including byte values. It is impossible to disassemble the content of addresses not located in any segment, therefore you must create a new segment if you want to resume the disassembly of that part of the code. You can also edit an adjacent segment to expand it to those addresses (Edit → Segments → Edit segment…). IDA will ask your the permission to disable addresses occupied by the segment. If you give your permission, information about the segment will be deleted, otherwise IDA will discard information about instruction/data, comments etc, but retain byte values so that you will be able to create another segment afterwards. To disassemble the addresses occupied by the segment, you need to create a new segment again (i.e. you cannot disassemble bytes without a segment). You can also expand another adjacent segment to these addresses. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hex-rays.com/ida-actions/killsegment.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.