Since it's shared on both Macs and PCs, barring special circumstances, it's formatted as either FAT32, ExFAT, or NTFS. If it's formatted as FAT32 or ExFAT, it won't have an owner, group, or permissions, as the filesystem doesn't support them. If it's formatted as NTFS, it'll be read only on a Mac out of the box.
If that error message is generated for a FAT32 or ExFAT drive, it's either mounted as read-only or locked in hardware, both of which, again barring special circumstances, require specific action on someone's part. This type of issue can generally be assumed to be due to an NTFS-formatted dri