Most games can be installed on HDD by using 2HDSIM or SUBST, but there are some games needed disassembling or other fixes to make them run on HDD. The changes/fixes i have made are provided in a file called "HDD_patch.txt" in the root directory of the hdf files.
Aoki Ookami to Shiroki Mejika - Genghis Khan (Koei)
- Fixed disk check to make it work with 2HDSIM
https://nfggames.com/X68000/Games/HDD-Games/Aoki%20Ookami%20to%20Shiroki%20Mejika%20-%20Genghis%20Khan%20(Koei)[HD].zip
Branmarker (D.O.)(Adult game)
- No command.x, used 2hdsim and subst in config.sys
https://nfggames.com/X68000/Games/HDD-Games/Branmarker%20(D.O.)[HD].zip
Caroll (System House Oh!)(Adult game)
- Fixed save function when using 2hdsim for save disk in drive B
https://nfggames.com/X68000/Games/HDD-Games/Caroll%20(System%20House%20Oh!)[HD].zip
Choubangai Seifuku Zukan + (System House Oh!)(Adult game)
- ZUKAN_HD.X is modified to load Data Disk B from virtual drive X:
https://nfggames.com/X68000/Games/HDD-Games/Choubangai%20Seifuku%20Zukan%20+%20(System%20House%20Oh!)[HD].zip
Cosmic Psycho (Cocktail Soft)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Cosmic%20Psycho%20(Cocktail%20Soft)[HD].zip
Crescent (Silky's)(Adult game)
- Using undocumented H switch for HD Installation - SIL.X STARTS.M H x
https://nfggames.com/X68000/Games/HDD-Games/Crescent%20(Silky's)[HD].zip
Daikairei - Dai Nippon Teikoku Kaigun no Kiseki (Artdink)
- Patched disk check for loading/saving game
https://nfggames.com/X68000/Games/HDD-Games/Daikairei%20-%20Dai%20Nippon%20Teikoku%20Kaigun%20no%20Kiseki%20(Artdink)[HD].zip
De-Ja (elf)(Adult game)
- Patched disc check. Game still needs a DISKNO file, so don't delete it.
https://nfggames.com/X68000/Games/HDD-Games/De-Ja%20(elf)[HD].zip
Dead of the Brain (Fairytale)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Dead%20of%20the%20Brain%20(Fairytale)[HD].zip
Dracula Hakushaku (Fairytale - Ides)(Adult game)
- Patched disk check and fixed load/save game
https://nfggames.com/X68000/Games/HDD-Games/Dracula%20Hakushaku%20(Fairytale%20-%20Ides)[HD].zip
Dragon City X Shitei (Fairytale)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Dragon%20City%20X%20Shitei%20(Fairytale)[HD].zip
Dragon Eyes (Game Technopolis - Fairytale)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Dragon%20Eyes%20(Game%20Technopolis%20-%20Fairytale)[HD].zip
Emerald Densetsu (System House Oh!)(Adult game)
- Patched disk check, fixed save function when using 2hdsim for save disk in drive B
https://nfggames.com/X68000/Games/HDD-Games/Emerald%20Densetsu%20(System%20House%20Oh!)[HD].zip
Etoile Princess (Exact)
- Fixed saving - 2hdsim and lndrv did the trick
https://nfggames.com/X68000/Games/HDD-Games/Etoile%20Princess%20(Exact)[HD].zip
Exterlien (D.O.)(Adult game)
- Fixed disk swap from DiskA to DiskC at game start, 2hdsim works now. [EXTR.X / DiskA.hdm]
https://nfggames.com/X68000/Games/HDD-Games/Exterlien%20(D.O.)[HD].zip
History of Elthlead (Masaya)
- Patched disk check after opening (Disk2 -> Disk3 / Drive B)
https://nfggames.com/X68000/Games/HDD-Games/History%20of%20Elthlead%20(Masaya)[HD].zip
Inindou - Datou Nobunaga (Koei)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Inindou%20-%20Datou%20Nobunaga%20(Koei)[HD].zip
Jane (System House Oh!)(Adult game)
- Fixed save function when using 2hdsim for save disk in drive B
https://nfggames.com/X68000/Games/HDD-Games/Jane%20(System%20House%20Oh!)[HD].zip
Jesus II (Enix)
- Fixed disk swap at the end of the game (game asks to insert floppy disks in specific order)
https://nfggames.com/X68000/Games/HDD-Games/Jesus%20II%20(Enix)[HD].zip
Kaerimichi wa Kiken ga Ippai (D.O.)(Adult game)
- Patched disk check for new game (DiskB check) and load game (DiskC and DiskD check)
https://nfggames.com/X68000/Games/HDD-Games/Kaerimichi%20wa%20Kiken%20ga%20Ippai%20(D.O.)[HD].zip
Lam-Mal / Ranmaru (Fairytale - Ides)(Adult game)
- Removed manual protection
- Config.sys needs "BUFFERS=20" or game will crash in some scenes
https://nfggames.com/X68000/Games/HDD-Games/Lam-Mal%20(Fairytale%20-%20Ides)[HD](Manual%20protection%20removed).zip
Patched Floppy Disk: https://nfggames.com/X68000/Games/Lam-Mal%20(Fairytale%20-%20Ides)[FD](Manual%20protection%20removed).zip
Mahjong Yuuenchi (Home Data)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Mahjong%20Yuuenchi%20(Home%20Data)[HD].zip
Mega lo Mania (Imagineer)
- Fixed game asking for disk in drive 0
https://nfggames.com/X68000/Games/HDD-Games/Mega%20lo%20Mania%20(Imagineer)[HD].zip
Milk Time (System House Oh!)(Adult game)
- Patched disk check, fixed save function when using 2hdsim for save disk in drive B
https://nfggames.com/X68000/Games/HDD-Games/Milk%20Time%20(System%20House%20Oh!)[HD].zip
Mirage (Discovery)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Mirage%20(Discovery)[HD].zip
Nicoll (System House Oh!)(Adult game)
- Fixed save function when using 2hdsim for save disk in drive B
https://nfggames.com/X68000/Games/HDD-Games/Nicoll%20(System%20House%20Oh!)[HD].zip
Nobunaga no Yabou - Haouden (Koei)
- Fixed disk swap intro -> game
https://nfggames.com/X68000/Games/HDD-Games/Nobunaga%20no%20Yabou%20-%20Haouden%20(Koei)[HD].zip
Pinky 1 (System House Oh!)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Pinky%201%20(System%20House%20Oh!)[HD].zip
Pretty Doll (System House Oh!)(Adult game)
- Patched disk check
https://nfggames.com/X68000/Games/HDD-Games/Pretty%20Doll%20(System%20House%20Oh!)[HD].zip
Ray-Gun (elf)(Adult game)
- Fixed disk swap. Game still needs DISKNO files, so don't delete it.
https://nfggames.com/X68000/Games/HDD-Games/Ray-Gun%20(elf)[HD].zip
Record of Lodoss War - Haiiro no Majo (Humming Bird Soft)
- Fixed disk swap / char disk creation
- added boot menu for game and char creation
https://nfggames.com/X68000/Games/HDD-Games/Record%20of%20Lodoss%20War%20-%20Haiiro%20no%20Majo%20(Humming%20Bird%20Soft)[HD].zip
Rune Worth - Kokui no Kikoushi (T&E Soft)
- Patched disk check - Game still needs ID file, so don't delete it.
https://nfggames.com/X68000/Games/HDD-Games/Rune%20Worth%20-%20Kokui%20no%20Kikoushi%20(T&E%20Soft)[HD].zip
Urotsuki Douji (Fairytale - Takeru)(Adult game)
- Patched disk check for DiskB
https://nfggames.com/X68000/Games/HDD-Games/Urotsuki%20Douji%20(Fairytale%20-%20Takeru)[HD].zip
Yesterday (System House Oh!)(Adult game)
- Fixed save function when using 2hdsim for save disk in drive B
https://nfggames.com/X68000/Games/HDD-Games/Yesterday%20(System%20House%20Oh!)[HD].zip