![MacBook pro 2015 with macOS Big Sur. I want to erase the ssd to reinstall the OS. What volume under "Internals" do I have to erase. First one or the 2nd one MacBook pro 2015 with macOS Big Sur. I want to erase the ssd to reinstall the OS. What volume under "Internals" do I have to erase. First one or the 2nd one](https://preview.redd.it/uxf16ypf0ci91.jpg?width=640&crop=smart&auto=webp&s=92a13c7de9d75d92044d0d42f1bc884550a0095b)
MacBook pro 2015 with macOS Big Sur. I want to erase the ssd to reinstall the OS. What volume under "Internals" do I have to erase. First one or the 2nd one
![♪♪純正!Apple 最速 PCIe SSD 512GB SM0512G MZ-JPV5120/0A4 SSUBX Macbook Pro 2015 マックブック ♪♪の落札情報詳細 - ヤフオク落札価格検索 オークフリー ♪♪純正!Apple 最速 PCIe SSD 512GB SM0512G MZ-JPV5120/0A4 SSUBX Macbook Pro 2015 マックブック ♪♪の落札情報詳細 - ヤフオク落札価格検索 オークフリー](https://img.aucfree.com/n337285037.1.jpg)
♪♪純正!Apple 最速 PCIe SSD 512GB SM0512G MZ-JPV5120/0A4 SSUBX Macbook Pro 2015 マックブック ♪♪の落札情報詳細 - ヤフオク落札価格検索 オークフリー
![bootcamp - I erased the partition where Windows 10 was previously installed. How can I merge it with my OS X partition? - Ask Different bootcamp - I erased the partition where Windows 10 was previously installed. How can I merge it with my OS X partition? - Ask Different](https://i.stack.imgur.com/VY4tx.png)