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Code Issues 657 Packages Projects Releases 19 Wiki Activity

NEC PC-88 disk images are not recognized #978

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opened 2026-01-29 15:35:44 +00:00 by claunia · 2 comments
claunia commented 2026-01-29 15:35:44 +00:00
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Originally created by @sdsnatcher on GitHub (Jan 8, 2024).

Originally assigned to: @claunia on GitHub.

Version

6.0.0~alpha9+e10c237e

Commit hash

No response

Tested debug version?

  • Yes

Which operating systems have you used?

  • Windows
  • Linux
  • macOS
  • Other

What is the architectural bit size you're using?

  • 32-bit
  • 64-bit
  • Unsure or unknown

What processor are you using?

  • An Intel or AMD
  • An ARM or Apple Silicon
  • Unsure or unknown

Description

.d88 disk images are stated to be supported, but when I try to use aaru with a NEC PC-88 disk image, it complains that it's unable to recognize it:

$ ./aaru i print ../DENKEN_CG.D88 
aaru 6.0.0~alpha9+e10c237e
Copyright © 2011-2023 Natalia Portillo

Unable to recognize image format, not printing

Plenty of NEC PC-88 disk images can be found for testing here.

The specific disk image used on this test can be found here.

Exact command line used

./aaru i print ../DENKEN_CG.D88

Expected behavior

Should recognize and be able to run commands on NEC PC-88 images dumped in .d88 disk format.

Actual behavior

Throws a "Unable to recognize image format" error.

Output of command execution with debug output enabled

aaru 6.0.0~alpha9+e10c237e
Copyright © 2011-2023 Natalia Portillo

DEBUG (PrintHex command): --debug=True
DEBUG (PrintHex command): --input=../DENKEN_CG.D88
DEBUG (PrintHex command): --length=1
DEBUG (PrintHex command): --long-sectors=False
DEBUG (PrintHex command): --start=0
DEBUG (PrintHex command): --verbose=False
DEBUG (PrintHex command): --width=32
                             
Identifying image format... ⣟
                             DEBUG (Format detection): Trying plugin Aaru Format
DEBUG (Format detection): Trying plugin ACT Apricot Disk Image
DEBUG (Format detection): Trying plugin Alcohol 120% Media Descriptor Structure
DEBUG (Format detection): Trying plugin Anex86 Disk Image
DEBUG (Anex86 plugin): fdihdr.unknown = 1263420740
DEBUG (Anex86 plugin): fdihdr.hddtype = 1130319429
DEBUG (Anex86 plugin): fdihdr.hdrSize = 1162108743
DEBUG (Anex86 plugin): fdihdr.dskSize = 20301
DEBUG (Anex86 plugin): fdihdr.bps = 0
DEBUG (Anex86 plugin): fdihdr.spt = 0
DEBUG (Anex86 plugin): fdihdr.heads = 0
DEBUG (Anex86 plugin): fdihdr.cylinders = 415824
DEBUG (Format detection): Trying plugin Apple 2IMG
DEBUG (Format detection): Trying plugin Apple Disk Archival/Retrieval Tool
DEBUG (Format detection): Trying plugin Apple DiskCopy 4.2
DEBUG (Format detection): Trying plugin Apple New Disk Image Format
DEBUG (Format detection): Trying plugin Apple NIB
DEBUG (Format detection): Trying plugin Apple Universal Disk Image Format
DEBUG (Format detection): Trying plugin Basic Lisa Utility
DEBUG (Format detection): Trying plugin BlindWrite 4
DEBUG (Format detection): Trying plugin BlindWrite 5
DEBUG (Format detection): Trying plugin CDRDAO tocfile
DEBUG (Format detection): Trying plugin CDRWin cuesheet
DEBUG (Format detection): Trying plugin CisCopy Disk Image (DC-File)
DEBUG (Format detection): Trying plugin CloneCD
DEBUG (Format detection): Trying plugin CopyTape
DEBUG (Format detection): Trying plugin CPCEMU Disk-File and Extended CPC Disk-File
DEBUG (Format detection): Trying plugin d2f disk image
DEBUG (Format detection): Trying plugin D88 Disk Image
DEBUG (D88 plugin): d88hdr.name = "DENKEN_CG_DEMO"
DEBUG (D88 plugin): d88hdr.reserved is empty? = True
DEBUG (D88 plugin): d88hdr.write_protect = 0x00
DEBUG (D88 plugin): d88hdr.disk_type = D2 (0)
DEBUG (D88 plugin): d88hdr.disk_size = 415824
DEBUG (Format detection): Trying plugin Digital Research DiskCopy
DEBUG (Format detection): Trying plugin DIM Disk Image
DEBUG (Format detection): Trying plugin DiscFerret
DEBUG (Format detection): Trying plugin DiscJuggler
DEBUG (DiscJuggler plugin): dscLen = -1
DEBUG (Format detection): Trying plugin DiskDupe DDI Disk Image
DEBUG (Format detection): Trying plugin Dreamcast GDI image
DEBUG (Format detection): Trying plugin Dunfield's IMD
DEBUG (Format detection): Trying plugin HD-Copy disk image
DEBUG (Format detection): Trying plugin IBM SaveDskF
DEBUG (Format detection): Trying plugin KryoFlux STREAM
DEBUG (Format detection): Trying plugin MAME Compressed Hunks of Data
DEBUG (Format detection): Trying plugin MAXI Disk image
DEBUG (MAXI Disk plugin): tmp_header.unknown = 68
DEBUG (MAXI Disk plugin): tmp_header.diskType = 69
DEBUG (MAXI Disk plugin): tmp_header.heads = 78
DEBUG (MAXI Disk plugin): tmp_header.cylinders = 75
DEBUG (MAXI Disk plugin): tmp_header.bytesPerSector = 69
DEBUG (MAXI Disk plugin): tmp_header.sectorsPerTrack = 78
DEBUG (MAXI Disk plugin): tmp_header.unknown2 = 95
                             _header.unknown3 = 67
Identifying image format... ⡿ing plugin Microsoft VHDX
                             DEBUG (Format detection): Trying plugin Nero Burning ROM image
DEBUG (Nero plugin): imageStream.Length = 415824
DEBUG (Nero plugin): footerV1.ChunkID = 0xFFFFFFFF
DEBUG (Nero plugin): footerV1.FirstChunkOffset = 4294967295
DEBUG (Nero plugin): footerV2.ChunkID = 0xFFFFFFFF
DEBUG (Nero plugin): footerV2.FirstChunkOffset = 18446744073709551615
DEBUG (Format detection): Trying plugin Parallels disk image
DEBUG (Format detection): Trying plugin PartClone disk image
DEBUG (Format detection): Trying plugin Partimage disk image
DEBUG (Format detection): Trying plugin QEMU Copy-On-Write disk image
DEBUG (Format detection): Trying plugin QEMU Copy-On-Write disk image v2
DEBUG (QCOW plugin): qHdr.magic = 0x44454E4B
DEBUG (QCOW plugin): qHdr.version = 1162764099
DEBUG (Format detection): Trying plugin QEMU Enhanced Disk image
DEBUG (Format detection): Trying plugin Ray Arachelian's Disk IMage
DEBUG (Ray Arachelian's Disk IMage plugin): header.signature = DENKEN_CG_DEMO
DEBUG (Ray Arachelian's Disk IMage plugin): header.diskType = 16
DEBUG (Ray Arachelian's Disk IMage plugin): header.heads = 0
DEBUG (Ray Arachelian's Disk IMage plugin): header.cylinders = 243
DEBUG (Ray Arachelian's Disk IMage plugin): header.sectorsPerTrack = 0
DEBUG (Ray Arachelian's Disk IMage plugin): header.signature matches? = False
DEBUG (Format detection): Trying plugin RS-IDE Hard Disk Image
DEBUG (Format detection): Trying plugin Spectrum Floppy Disk Image
DEBUG (Format detection): Trying plugin SuperCardPro
DEBUG (Format detection): Trying plugin Sydex CopyQM
DEBUG (Format detection): Trying plugin Sydex TeleDisk
DEBUG (Format detection): Trying plugin T98 Hard Disk Image
DEBUG (Format detection): Trying plugin T98-Next NHD r0 Disk Image
DEBUG (Format detection): Trying plugin Virtual98 Disk Image
DEBUG (Format detection): Trying plugin VirtualBox Disk Image
DEBUG (Format detection): Trying plugin VirtualPC
DEBUG (Format detection): Trying plugin VMware disk image
DEBUG (Format detection): Trying plugin Atari Lynx
DEBUG (Format detection): Trying plugin iNES
DEBUG (Format detection): Trying plugin Nintendo 64
DEBUG (Format detection): Trying plugin Nintendo Game Boy
DEBUG (Format detection): Trying plugin Nintendo Game Boy Advance
DEBUG (Format detection): Trying plugin Sega Game Gear / Master System
DEBUG (Format detection): Trying plugin Sega Mega Drive / 32X / Pico
Unable to recognize image format, not printing
Originally created by @sdsnatcher on GitHub (Jan 8, 2024). Originally assigned to: @claunia on GitHub. ### Version 6.0.0~alpha9+e10c237e ### Commit hash _No response_ ### Tested debug version? - [X] Yes ### Which operating systems have you used? - [ ] Windows - [ ] Linux - [X] macOS - [ ] Other ### What is the architectural bit size you're using? - [ ] 32-bit - [X] 64-bit - [ ] Unsure or unknown ### What processor are you using? - [X] An Intel or AMD - [ ] An ARM or Apple Silicon - [ ] Unsure or unknown ### Description .d88 disk images are stated to be supported, but when I try to use aaru with a NEC PC-88 disk image, it complains that it's unable to recognize it: ``` $ ./aaru i print ../DENKEN_CG.D88 aaru 6.0.0~alpha9+e10c237e Copyright © 2011-2023 Natalia Portillo Unable to recognize image format, not printing ``` Plenty of NEC PC-88 disk images can be found for testing [here](https://archive.org/details/PC88-image-collection-1817). The specific disk image used on this test can be found [here](https://archive.org/download/PC88-image-collection-1817/【エミュレーター・ロム】%20PC88イメージ集%281817_個%29.zip/images1%2FDENKENБ%40CGПWБiУпРlБj.cab). ### Exact command line used ./aaru i print ../DENKEN_CG.D88 ### Expected behavior Should recognize and be able to run commands on NEC PC-88 images dumped in .d88 disk format. ### Actual behavior Throws a "Unable to recognize image format" error. ### Output of command execution with debug output enabled ```shell aaru 6.0.0~alpha9+e10c237e Copyright © 2011-2023 Natalia Portillo DEBUG (PrintHex command): --debug=True DEBUG (PrintHex command): --input=../DENKEN_CG.D88 DEBUG (PrintHex command): --length=1 DEBUG (PrintHex command): --long-sectors=False DEBUG (PrintHex command): --start=0 DEBUG (PrintHex command): --verbose=False DEBUG (PrintHex command): --width=32 Identifying image format... ⣟ DEBUG (Format detection): Trying plugin Aaru Format DEBUG (Format detection): Trying plugin ACT Apricot Disk Image DEBUG (Format detection): Trying plugin Alcohol 120% Media Descriptor Structure DEBUG (Format detection): Trying plugin Anex86 Disk Image DEBUG (Anex86 plugin): fdihdr.unknown = 1263420740 DEBUG (Anex86 plugin): fdihdr.hddtype = 1130319429 DEBUG (Anex86 plugin): fdihdr.hdrSize = 1162108743 DEBUG (Anex86 plugin): fdihdr.dskSize = 20301 DEBUG (Anex86 plugin): fdihdr.bps = 0 DEBUG (Anex86 plugin): fdihdr.spt = 0 DEBUG (Anex86 plugin): fdihdr.heads = 0 DEBUG (Anex86 plugin): fdihdr.cylinders = 415824 DEBUG (Format detection): Trying plugin Apple 2IMG DEBUG (Format detection): Trying plugin Apple Disk Archival/Retrieval Tool DEBUG (Format detection): Trying plugin Apple DiskCopy 4.2 DEBUG (Format detection): Trying plugin Apple New Disk Image Format DEBUG (Format detection): Trying plugin Apple NIB DEBUG (Format detection): Trying plugin Apple Universal Disk Image Format DEBUG (Format detection): Trying plugin Basic Lisa Utility DEBUG (Format detection): Trying plugin BlindWrite 4 DEBUG (Format detection): Trying plugin BlindWrite 5 DEBUG (Format detection): Trying plugin CDRDAO tocfile DEBUG (Format detection): Trying plugin CDRWin cuesheet DEBUG (Format detection): Trying plugin CisCopy Disk Image (DC-File) DEBUG (Format detection): Trying plugin CloneCD DEBUG (Format detection): Trying plugin CopyTape DEBUG (Format detection): Trying plugin CPCEMU Disk-File and Extended CPC Disk-File DEBUG (Format detection): Trying plugin d2f disk image DEBUG (Format detection): Trying plugin D88 Disk Image DEBUG (D88 plugin): d88hdr.name = "DENKEN_CG_DEMO" DEBUG (D88 plugin): d88hdr.reserved is empty? = True DEBUG (D88 plugin): d88hdr.write_protect = 0x00 DEBUG (D88 plugin): d88hdr.disk_type = D2 (0) DEBUG (D88 plugin): d88hdr.disk_size = 415824 DEBUG (Format detection): Trying plugin Digital Research DiskCopy DEBUG (Format detection): Trying plugin DIM Disk Image DEBUG (Format detection): Trying plugin DiscFerret DEBUG (Format detection): Trying plugin DiscJuggler DEBUG (DiscJuggler plugin): dscLen = -1 DEBUG (Format detection): Trying plugin DiskDupe DDI Disk Image DEBUG (Format detection): Trying plugin Dreamcast GDI image DEBUG (Format detection): Trying plugin Dunfield's IMD DEBUG (Format detection): Trying plugin HD-Copy disk image DEBUG (Format detection): Trying plugin IBM SaveDskF DEBUG (Format detection): Trying plugin KryoFlux STREAM DEBUG (Format detection): Trying plugin MAME Compressed Hunks of Data DEBUG (Format detection): Trying plugin MAXI Disk image DEBUG (MAXI Disk plugin): tmp_header.unknown = 68 DEBUG (MAXI Disk plugin): tmp_header.diskType = 69 DEBUG (MAXI Disk plugin): tmp_header.heads = 78 DEBUG (MAXI Disk plugin): tmp_header.cylinders = 75 DEBUG (MAXI Disk plugin): tmp_header.bytesPerSector = 69 DEBUG (MAXI Disk plugin): tmp_header.sectorsPerTrack = 78 DEBUG (MAXI Disk plugin): tmp_header.unknown2 = 95 _header.unknown3 = 67 Identifying image format... ⡿ing plugin Microsoft VHDX DEBUG (Format detection): Trying plugin Nero Burning ROM image DEBUG (Nero plugin): imageStream.Length = 415824 DEBUG (Nero plugin): footerV1.ChunkID = 0xFFFFFFFF DEBUG (Nero plugin): footerV1.FirstChunkOffset = 4294967295 DEBUG (Nero plugin): footerV2.ChunkID = 0xFFFFFFFF DEBUG (Nero plugin): footerV2.FirstChunkOffset = 18446744073709551615 DEBUG (Format detection): Trying plugin Parallels disk image DEBUG (Format detection): Trying plugin PartClone disk image DEBUG (Format detection): Trying plugin Partimage disk image DEBUG (Format detection): Trying plugin QEMU Copy-On-Write disk image DEBUG (Format detection): Trying plugin QEMU Copy-On-Write disk image v2 DEBUG (QCOW plugin): qHdr.magic = 0x44454E4B DEBUG (QCOW plugin): qHdr.version = 1162764099 DEBUG (Format detection): Trying plugin QEMU Enhanced Disk image DEBUG (Format detection): Trying plugin Ray Arachelian's Disk IMage DEBUG (Ray Arachelian's Disk IMage plugin): header.signature = DENKEN_CG_DEMO DEBUG (Ray Arachelian's Disk IMage plugin): header.diskType = 16 DEBUG (Ray Arachelian's Disk IMage plugin): header.heads = 0 DEBUG (Ray Arachelian's Disk IMage plugin): header.cylinders = 243 DEBUG (Ray Arachelian's Disk IMage plugin): header.sectorsPerTrack = 0 DEBUG (Ray Arachelian's Disk IMage plugin): header.signature matches? = False DEBUG (Format detection): Trying plugin RS-IDE Hard Disk Image DEBUG (Format detection): Trying plugin Spectrum Floppy Disk Image DEBUG (Format detection): Trying plugin SuperCardPro DEBUG (Format detection): Trying plugin Sydex CopyQM DEBUG (Format detection): Trying plugin Sydex TeleDisk DEBUG (Format detection): Trying plugin T98 Hard Disk Image DEBUG (Format detection): Trying plugin T98-Next NHD r0 Disk Image DEBUG (Format detection): Trying plugin Virtual98 Disk Image DEBUG (Format detection): Trying plugin VirtualBox Disk Image DEBUG (Format detection): Trying plugin VirtualPC DEBUG (Format detection): Trying plugin VMware disk image DEBUG (Format detection): Trying plugin Atari Lynx DEBUG (Format detection): Trying plugin iNES DEBUG (Format detection): Trying plugin Nintendo 64 DEBUG (Format detection): Trying plugin Nintendo Game Boy DEBUG (Format detection): Trying plugin Nintendo Game Boy Advance DEBUG (Format detection): Trying plugin Sega Game Gear / Master System DEBUG (Format detection): Trying plugin Sega Mega Drive / 32X / Pico Unable to recognize image format, not printing ```
claunia added the bugdump image format labels 2026-01-29 15:35:45 +00:00
claunia commented 2026-01-29 15:35:48 +00:00
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@claunia commented on GitHub (Jan 8, 2024):

Bug confirmed, seems that some images contain a header that is making the parses go nuts.

@claunia commented on GitHub (Jan 8, 2024): Bug confirmed, seems that some images contain a header that is making the parses go nuts.
claunia commented 2026-01-29 15:35:52 +00:00
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@claunia commented on GitHub (Jan 8, 2024):

Some D88 images do not pass header parsing.

@claunia commented on GitHub (Jan 8, 2024): ![](https://github.trello.services/images/mini-trello-icon.png) [Some D88 images do not pass header parsing.](https://trello.com/c/nAf0s7de/84-some-d88-images-do-not-pass-header-parsing)
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Reference: aaru-dps/Aaru-aaru-dps#978
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