diff --git a/hash/pc98.xml b/hash/pc98.xml
index 9ea57bdea90..1863f93b0c0 100644
--- a/hash/pc98.xml
+++ b/hash/pc98.xml
@@ -30470,16 +30470,18 @@ TODO: to install to HDD should be "INST1.BAT B: A:<folder>" but it fails recogni
 		<publisher>マキシマ (Maxima)</publisher>
 		<info name="alt_title" value="マーキュリー ザ プライムマスター" />
 		<info name="release" value="19901208" />
+		<!-- disk labels confirmed from auction image -->
+		<!-- baddump: both disks contains later '91 files, including non-factory saves -->
 		<part name="flop1" interface="floppy_5_25">
-			<feature name="part_id" value="Disk A"/>
+			<feature name="part_id" value="System Disk"/>
 			<dataarea name="flop" size="1281968">
-				<rom name="mercurya.d88" size="1281968" crc="274cab39" sha1="4b90d472a09da75e06b9ed5d3ae882331712a3e3" offset="0" />
+				<rom name="mercurys.d88" size="1281968" crc="15557763" sha1="6f1adde92d4321974b0ac421268592f21f341cb6" offset="0" status="baddump" />
 			</dataarea>
 		</part>
 		<part name="flop2" interface="floppy_5_25">
-			<feature name="part_id" value="Disk B"/>
+			<feature name="part_id" value="Disk A"/>
 			<dataarea name="flop" size="1281968">
-				<rom name="mercurys.d88" size="1281968" crc="15557763" sha1="6f1adde92d4321974b0ac421268592f21f341cb6" offset="0" />
+				<rom name="mercurya.d88" size="1281968" crc="274cab39" sha1="4b90d472a09da75e06b9ed5d3ae882331712a3e3" offset="0" status="baddump" />
 			</dataarea>
 		</part>
 	</software>
@@ -60955,8 +60957,13 @@ Has [GS] and [CD] options, latter requiring a redbook?
 		<description>Kuroneko Kan</description>
 		<year>1993</year>
 		<publisher>フェアリーダスト (Fairy Dust)</publisher>
+		<notes><![CDATA[
+Acts weird on [FDC] disk swaps when run thru floppies, where it needs to remove then readd the same disk to make it continue
+Untested on [HDD] install
+]]></notes>
 		<info name="alt_title" value="黒猫館" />
 		<info name="release" value="19930709" />
+		<info name="usage" value="Needs DOS installed on HDD" />
 		<part name="flop1" interface="floppy_5_25">
 			<feature name="part_id" value="Disk A"/>
 			<dataarea name="flop" size="1166332">