NTFS partition not visible to XP - because it’s GPT
OK so I have partitions for HFS+ and NTFS but still no extra disk (drive letter) shows up. XP’s Disk Management tool does list the disk device but allows no operations on it - menu commands are greyed-out. The tool displays the partitioning system as GPT, which may be a clue: I think XP is unable to handle GPT-based partitions, only MBR ones.