diff --git a/hash/ibmpcjr_cart.xml b/hash/ibmpcjr_cart.xml
index 45bab46f7d8..ba92f37f4df 100644
--- a/hash/ibmpcjr_cart.xml
+++ b/hash/ibmpcjr_cart.xml
@@ -52,7 +52,7 @@ Fraction Fever (Spinaker)
 		<year>1984</year>
 		<publisher>IBM</publisher>
 		<info name="usage" value="Boot from a DOS floppy and type 'G'" />
-		<sharedfeat name="requirement" value="ibmpcjr_flop:dos2"/>
+		<sharedfeat name="requirement" value="ibmpcjr_flop:pcdos21"/>
 		<part name="cart" interface="ibmpcjr_cart">
 			<dataarea name="rom" size="65536">
 				<rom name="colorpnt.bin" size="65536" crc="0dcdef20" sha1="5aeee32a4ec4dd1aeea9a02b3d174a2f294d13b9" offset="0" />
@@ -76,7 +76,7 @@ Fraction Fever (Spinaker)
 		<year>1984</year>
 		<publisher>Lotus Development</publisher>
 		<info name="usage" value="Mount both carts and a DOS floppy and type 'TUTOR'" />
-		<sharedfeat name="requirement" value="ibmpcjr_flop:dos2"/>
+		<sharedfeat name="requirement" value="ibmpcjr_flop:pcdos21"/>
 		<part name="cart1" interface="ibmpcjr_cart">
 			<dataarea name="rom" size="65536">
 				<rom name="lotus123.b" size="65536" crc="7b2c1f81" sha1="0a47fe8f99a6362d756d0648f0eefbd4d3ca9223" offset="0" />
diff --git a/hash/ibmpcjr_flop.xml b/hash/ibmpcjr_flop.xml
index 96b5564eb94..da16081dbaf 100644
--- a/hash/ibmpcjr_flop.xml
+++ b/hash/ibmpcjr_flop.xml
@@ -27,20 +27,20 @@
 		<description>Wordstar for PCjr (Release 1.00)</description>
 		<year>1987</year>
 		<publisher>Micropro International</publisher>
-		<info name="usage" value="boot from DOS 2 and then load wordstar" />
+		<info name="usage" value="boot from PC DOS 2.1 and then load wordstar" />
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="disk 1.ima" size="368640" crc="81b95671" sha1="a5f33403b1e3762e6b1c2c84b279e093eec9501f" offset="0x00000" />
+				<rom name="disk 1.img" size="368640" crc="81b95671" sha1="a5f33403b1e3762e6b1c2c84b279e093eec9501f" offset="0x00000" />
 			</dataarea>
 		</part>
 		<part name="flop2" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="disk 2.ima" size="368640" crc="d5c84856" sha1="ef138f490f302e687827b71b8d254143d870f895" offset="0x00000" />
+				<rom name="disk 2.img" size="368640" crc="d5c84856" sha1="ef138f490f302e687827b71b8d254143d870f895" offset="0x00000" />
 			</dataarea>
 		</part>
 		<part name="flop3" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="disk 3.ima" size="368640" crc="49884404" sha1="11c8c7d638ba00a1e42844a1efb09fd6f75ac7d4" offset="0x00000" />
+				<rom name="disk 3.img" size="368640" crc="49884404" sha1="11c8c7d638ba00a1e42844a1efb09fd6f75ac7d4" offset="0x00000" />
 			</dataarea>
 		</part>
 	</software>
@@ -51,7 +51,7 @@
 		<publisher>IBM</publisher>
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="163840">
-				<rom name="exploring the ibm pcjr.ima" size="163840" crc="409ff73f" sha1="453ae5f3fa7781ece7d421dd973ce54204b9c99d" offset="0x00000" />
+				<rom name="exploring the ibm pcjr.img" size="163840" crc="409ff73f" sha1="453ae5f3fa7781ece7d421dd973ce54204b9c99d" offset="0x00000" />
 			</dataarea>
 		</part>
 	</software>
@@ -62,7 +62,7 @@
 		<publisher>IBM</publisher>
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="ibm pcjr sampler.ima" size="368640" crc="c36607b3" sha1="a1d99d975aaed9746056fa1c06563cf08d1a8bc5" offset="0x00000" />
+				<rom name="ibm pcjr sampler.img" size="368640" crc="c36607b3" sha1="a1d99d975aaed9746056fa1c06563cf08d1a8bc5" offset="0x00000" />
 			</dataarea>
 		</part>
 	</software>
@@ -72,11 +72,11 @@
 		<description>The Norton Utilities 3.10</description>
 		<year>1986</year>
 		<publisher>Peter Norton Computing, Inc.</publisher>
-		<info name="usage" value="boot from DOS 2 and then load, using: nc /d1" />
+		<info name="usage" value="boot from PC DOS 2.1 and then load, using: nc /d1" />
 		<!-- marked as bad since source is questionable, needs a redump -->
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="norton utilities 310.ima" size="368640" crc="b27b8cbb" sha1="34b5973fe5354a08b4d2a987473f82cd82a581cd" offset="0x00000" status="baddump" />
+				<rom name="norton utilities 310.img" size="368640" crc="b27b8cbb" sha1="34b5973fe5354a08b4d2a987473f82cd82a581cd" offset="0x00000" status="baddump" />
 			</dataarea>
 		</part>
 	</software>
@@ -85,11 +85,11 @@
 		<description>ProComm (Version 2.4.3)</description>
 		<year>1988</year>
 		<publisher>Datastorm Technologies, Inc.</publisher>
-		<info name="usage" value="boot from DOS 2 and then load, using: prcmpgm" />
+		<info name="usage" value="boot from PC DOS 2.1 and then load, using: prcmpgm" />
 		<!-- marked as bad since source is questionable, needs a redump -->
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="procomm 243.ima" size="368640" crc="63c75c78" sha1="cc3f293349d3458d4577221f15eb121c18465109" offset="0x00000" status="baddump" />
+				<rom name="procomm 243.img" size="368640" crc="63c75c78" sha1="cc3f293349d3458d4577221f15eb121c18465109" offset="0x00000" status="baddump" />
 			</dataarea>
 		</part>
 	</software>
@@ -98,11 +98,11 @@
 		<description>Turbo Pascal 3.02A</description>
 		<year>1985</year>
 		<publisher>Borland Inc.</publisher>
-		<info name="usage" value="boot from DOS 2 and then load, using: prcmpgm" />
+		<info name="usage" value="boot from PC DOS 2.1 and then load, using: nu" />
 		<!-- marked as bad since source is questionable, needs a redump -->
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="turbo pascal 302.ima" size="368640" crc="07fafb7e" sha1="1358d6082b0d44107ef1411f3a2c251cef7eb922" offset="0x00000" status="baddump" />
+				<rom name="turbo pascal 302.img" size="368640" crc="07fafb7e" sha1="1358d6082b0d44107ef1411f3a2c251cef7eb922" offset="0x00000" status="baddump" />
 			</dataarea>
 		</part>
 	</software>
@@ -111,11 +111,11 @@
 		<description>ZBasic 4.02</description>
 		<year>1987</year>
 		<publisher>Zedcor, Inc.</publisher>
-		<info name="usage" value="boot from DOS 2 and then load, using: prcmpgm" />
+		<info name="usage" value="boot from PC DOS 2.1 and then load, using: zbasic" />
 		<!-- marked as bad since source is questionable, needs a redump -->
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="zbasic 402.ima" size="368640" crc="c8d0b1a0" sha1="ac264cb7267f54acf6d6619e4f782f781674c5e0" offset="0x00000" status="baddump" />
+				<rom name="zbasic 402.img" size="368640" crc="c8d0b1a0" sha1="ac264cb7267f54acf6d6619e4f782f781674c5e0" offset="0x00000" status="baddump" />
 			</dataarea>
 		</part>
 	</software>
@@ -127,7 +127,7 @@
 		<publisher>Sierra</publisher>
 		<part name="flop1" interface="floppy_5_25">
 			<dataarea name="flop" size="368640">
-				<rom name="king's quest.ima" size="368640" crc="524c1991" sha1="f6159d955959bf421774ed85df09b50026fa5a81" offset="0x00000" />
+				<rom name="king's quest.img" size="368640" crc="524c1991" sha1="f6159d955959bf421774ed85df09b50026fa5a81" offset="0x00000" />
 			</dataarea>
 		</part>
 	</software>