My HP Microserver Gen8 can't boot by U-disk burned in your loader v1.01 as your indicate above. It shows "Non system disk" but works well with 5.2 XPEnoboot_DS3615xs_5.2-5644.5 from this forum.
As I known, Gen8 can't boot by UEFI mode. Any suggestions?
update: The U-disk above was unstable and my Gen8 was updated to DSM 6.0.2 with new U-sidk by your loader v1.01. Thanks!