From Fedora Project Wiki
GUIDs in use in various UEFI systems that you may see in efibootmgr output.
| GUID | Vendor | Where it's used | for instance |
|---|---|---|---|
| bc7838d2-0f82-4d60-8316-c068ee79d25b | Lenovo | Vendor-Specific boot entries | Boot000B* ATA HDD1 VenMsg(bc7838d2-0f82-4d60-8316-c068ee79d25b,91af625956449f41a7b91f4f892ab0f601) |
| 721c8b66-426c-4e86-8e99-3457c46ab0b9 | Lenovo | Setup menus | Boot0000 Setup FvFile(721c8b66-426c-4e86-8e99-3457c46ab0b9) |
| c57ad6b7-0515-40a8-9d21-551652854e37 | Tiano | Full Shell | |
| Insyde | Boot0001* Internal EFI Shell MM(b,a5874010,a617400f)FvFile(c57ad6b7-0515-40a8-9d21-551652854e37)RC.a.E | ||
| cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0 | Intel | Boot0000* UEFI Internal Shell FvVol(cdbb7b35-6833-4ed6-9ab2-57d2acddf6f0) | |
| c12a7328-f81f-11d2-ba4b-00a0c93ec93b | UEFI | EFI System Partition | |
| 024dee41-33e7-11d3-9d69-0008c781f39f | UEFI | Legacy MBR | This is the GPT GUID for a partition containing a legacy MBR |