80mm CD/DVD media is more expensive, but they make it easier to daily-carry around a small selection of your most important boot utilties, in a smaller form factor.
| Form factor | Capacity |
|---|---|
| 80mm circular CDR | 210 MB |
| business card CD | 30-100 MB1 |
| 80mm circular DVD | 1.4 GB single-sided
2.8 GB double-sided |
| business card DVD | 330-620 MB1 |
| 80mm circular Blu-ray | 7.5 GB |
1. capacity depends on the short-axis length, which isn't standardized, and can vary