VMware BIOS (.nvram)
.nvram file signature | application/octet-stream
VMware BIOS (non-volatile RAM) state file
Magic Bytes
Offset 0
4D 52 56 4E
Sources: Gary Kessler
Extension
.nvram
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .nvram files in Python
def is_nvram(file_path: str) -> bool:
"""Check if file is a valid NVRAM by magic bytes."""
signature = bytes([0x4D, 0x52, 0x56, 0x4E])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .nvram files in Node.js
function isNVRAM(buffer: Buffer): boolean {
const signature = Buffer.from([0x4D, 0x52, 0x56, 0x4E]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .nvram files in Go
func IsNVRAM(data []byte) bool {
signature := []byte{0x4D, 0x52, 0x56, 0x4E}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/nvram
curl https://filesignature.org/api/v1/nvram
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .nvram file?
A .nvram file is a VMware BIOS file. VMware BIOS (non-volatile RAM) state file
What are the magic bytes for .nvram files?
The magic bytes for VMware BIOS files are 4D 52 56 4E at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .nvram file?
To validate a .nvram file, read the first bytes of the file and compare them against the known magic bytes (4D 52 56 4E) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .nvram files?
There is no officially registered MIME type for .nvram files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .nvram files?
VMware BIOS (.nvram) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.