Convert vollabel to pnm Online: vollabel2pnm
You can use Tom's Editor to easily convert images from
Apple Volume Label .VOLLABEL to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Apple Volume Label is an image format with extension VOLLABEL.
PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.