Verifying MD5 Checksums
In order to ensure that you are using the correct BIOS file for a given system, we recommend verifying the MD5 checksum of a BIOS image against the official MD5 checksums listed in the BIOS table.
The open-source HashCheck Shell Extension featured in these screenshots makes checking an MD5 checksum in Windows 10 fairly straightforward.
| Action | Screenshot |
|---|---|
| 1. Select the BIOS file you would like to verify in Windows Explorer. This example uses a file which claims to be a Magnavox Oddessy2 BIOS. |  |
2. Right-click and then select Properties. Generally, this option appears at the bottom of the right-click context menu. |
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3. Select the Checksums tab and locate the MD5 checksum. In this case the checksum of 562d5ebf9e030a40d6fabfc2f33139fd is a match. |
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| 4. Rename the BIOS file to match the table below, being sure to match the case. Sometimes Windows makes it difficult to see or change the file extension -- be sure that the extension is also correct. |  |
5. Transfer the BIOS image into the Lakka system folder so it can be used to load the corresponding libretro emulator core. |
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MD5sums is a lightweight and portable tool that works hassle-free using the drag-&-drop method. Simply drag each file over md5sums.exe and the resulting sum will be displayed. BIOS files, usually light on size, will be displayed immediately, however, ROMs, typically large files, will produce a percentage bar indicating when to expect the output.
Alternatively, md5summer, is another option.
md5sum should be available by default. If otherwise, install coreutils package.
- Open a Terminal.
- Go to directory where files are placed by typing:
cd /path/to/directory/. - Type
md5sum XXXXwhere XXXX is the name of your BIOS.
- Open a Terminal
- Type
md5 - Drag and drop your file to the terminal then press
Enter.
Sums can be checked online, too.
You can verify all BIOS files automatically, with System.dat, through one of the following programs: