Using Virtualbox (6.1.18 r142142) with Buslogic & IDE, I booted a fedora 33 (5.10.15-200.fc33.x86_64) server ISO and I find *many* targets with size 512 bytes which is incorrect. To get another data point, I used same VM and a NetBSD 9.1 ISO and that booted with the expected configuration. Although, it still could be a VM hardware model issue. Expected: 1 80GB IDE disk & CDROM 1 2GB SCSI buslogic attached disk Found: 1 80GB IDE disk & CDROM 120 512-byte SCSI disks snippet of dmesg ... [ 2.910331] scsi: ***** BusLogic SCSI Driver Version 2.1.17 of 12 September 2013 ***** [ 2.910332] scsi: Copyright 1995-1998 by Leonard N. Zubkoff <lnz@xxxxxxxxxxxxx> [ 2.935623] scsi3: Configuring BusLogic Model BT-958D PCI Wide Ultra SCSI Host Adapter [ 2.935625] scsi3: Firmware Version: 5.07B, I/O Address: 0xD280, IRQ Channel: 21/Level [ 2.935626] scsi3: PCI Bus: 0, Device: 21, Address: [ 2.935627] 0xF0808000, [ 2.935627] Host Adapter SCSI ID: 7 [ 2.935628] scsi3: Parity Checking: Enabled, Extended Translation: Enabled [ 2.935629] scsi3: Synchronous Negotiation: Ultra, Wide Negotiation: Enabled [ 2.935629] scsi3: Disconnect/Reconnect: Enabled, Tagged Queuing: Enabled [ 2.935634] scsi3: Scatter/Gather Limit: 128 of 8192 segments, Mailboxes: 211 [ 2.935635] scsi3: Driver Queue Depth: 211, Host Adapter Queue Depth: 192 [ 2.935636] scsi3: Tagged Queue Depth: [ 2.935636] Automatic [ 2.935639] , Untagged Queue Depth: 3 [ 2.935639] scsi3: SCSI Bus Termination: Both Enabled [ 2.939422] Adding 2009084k swap on /dev/zram0. Priority:100 extents:1 across:2009084k SSFS [ 3.049353] scsi3: *** BusLogic BT-958D Initialized Successfully *** [ 5.106302] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 5.748255] snd_intel8x0 0000:00:05.0: allow list rate for 1028:0177 is 48000 [ 5.839188] scsi host3: BusLogic BT-958D [ 5.839661] scsi host3: scsi scan: INQUIRY result too short (5), using 36 [ 5.839663] scsi 3:0:0:0: Direct-Access PQ: 0 ANSI: 0 [ 5.839723] scsi 3:0:0:1: Direct-Access PQ: 0 ANSI: 0 [ 5.839788] scsi 3:0:0:2: Direct-Access PQ: 0 ANSI: 0 [ 5.839875] scsi 3:0:0:3: Direct-Access PQ: 0 ANSI: 0 [ 5.840351] scsi 3:0:0:4: Direct-Access PQ: 0 ANSI: 0 [ 5.840723] scsi 3:0:0:5: Direct-Access PQ: 0 ANSI: 0 [ 5.840929] scsi 3:0:0:6: Direct-Access PQ: 0 ANSI: 0 [ 5.841139] scsi 3:0:0:7: Direct-Access PQ: 0 ANSI: 0 [ 5.841213] scsi 3:0:1:0: Direct-Access PQ: 0 ANSI: 0 [ 5.841274] scsi 3:0:1:1: Direct-Access PQ: 0 ANSI: 0 [ 5.841329] scsi 3:0:1:2: Direct-Access PQ: 0 ANSI: 0 [ 5.841378] scsi 3:0:1:3: Direct-Access PQ: 0 ANSI: 0 [ 5.841425] scsi 3:0:1:4: Direct-Access PQ: 0 ANSI: 0 [ 5.841974] scsi 3:0:1:5: Direct-Access PQ: 0 ANSI: 0 [ 5.842047] scsi 3:0:1:6: Direct-Access PQ: 0 ANSI: 0 [ 5.842494] scsi 3:0:1:7: Direct-Access PQ: 0 ANSI: 0 [ 5.842555] scsi 3:0:2:0: Direct-Access PQ: 0 ANSI: 0 [ 5.842704] scsi 3:0:2:1: Direct-Access PQ: 0 ANSI: 0 [ 5.842837] scsi 3:0:2:2: Direct-Access PQ: 0 ANSI: 0 [ 5.842933] scsi 3:0:2:3: Direct-Access PQ: 0 ANSI: 0 [ 5.842993] scsi 3:0:2:4: Direct-Access PQ: 0 ANSI: 0 [ 5.843050] scsi 3:0:2:5: Direct-Access PQ: 0 ANSI: 0 [ 5.843164] scsi 3:0:2:6: Direct-Access PQ: 0 ANSI: 0 [ 5.843600] scsi 3:0:2:7: Direct-Access PQ: 0 ANSI: 0 [ 5.843870] scsi 3:0:3:0: Direct-Access PQ: 0 ANSI: 0 [ 5.844043] scsi 3:0:3:1: Direct-Access PQ: 0 ANSI: 0 [ 5.844202] scsi 3:0:3:2: Direct-Access PQ: 0 ANSI: 0 [ 5.844321] scsi 3:0:3:3: Direct-Access PQ: 0 ANSI: 0 [ 5.844394] scsi 3:0:3:4: Direct-Access PQ: 0 ANSI: 0 [ 5.844457] scsi 3:0:3:5: Direct-Access PQ: 0 ANSI: 0 [ 5.844536] scsi 3:0:3:6: Direct-Access PQ: 0 ANSI: 0 [ 5.844740] scsi 3:0:3:7: Direct-Access PQ: 0 ANSI: 0 [ 5.844799] scsi 3:0:4:0: Direct-Access PQ: 0 ANSI: 0 [ 5.844851] scsi 3:0:4:1: Direct-Access PQ: 0 ANSI: 0 [ 5.844915] scsi 3:0:4:2: Direct-Access PQ: 0 ANSI: 0 [ 5.845640] scsi 3:0:4:3: Direct-Access PQ: 0 ANSI: 0 [ 5.845776] scsi 3:0:4:4: Direct-Access PQ: 0 ANSI: 0 [ 5.845833] scsi 3:0:4:5: Direct-Access PQ: 0 ANSI: 0 [ 5.846214] scsi 3:0:4:6: Direct-Access PQ: 0 ANSI: 0 [ 5.846285] scsi 3:0:4:7: Direct-Access PQ: 0 ANSI: 0 [ 5.846349] scsi 3:0:5:0: Direct-Access PQ: 0 ANSI: 0 [ 5.846410] scsi 3:0:5:1: Direct-Access PQ: 0 ANSI: 0 [ 5.846466] scsi 3:0:5:2: Direct-Access PQ: 0 ANSI: 0 [ 5.846517] scsi 3:0:5:3: Direct-Access PQ: 0 ANSI: 0 [ 5.846566] scsi 3:0:5:4: Direct-Access PQ: 0 ANSI: 0 [ 5.846626] scsi 3:0:5:5: Direct-Access PQ: 0 ANSI: 0 [ 5.846681] scsi 3:0:5:6: Direct-Access PQ: 0 ANSI: 0 [ 5.846736] scsi 3:0:5:7: Direct-Access PQ: 0 ANSI: 0 [ 5.846792] scsi 3:0:6:0: Direct-Access PQ: 0 ANSI: 0 [ 5.846843] scsi 3:0:6:1: Direct-Access PQ: 0 ANSI: 0 [ 5.846906] scsi 3:0:6:2: Direct-Access PQ: 0 ANSI: 0 [ 5.847436] scsi 3:0:6:3: Direct-Access PQ: 0 ANSI: 0 [ 5.847494] scsi 3:0:6:4: Direct-Access PQ: 0 ANSI: 0 [ 5.847549] scsi 3:0:6:5: Direct-Access PQ: 0 ANSI: 0 [ 5.847596] scsi 3:0:6:6: Direct-Access PQ: 0 ANSI: 0 [ 5.847659] scsi 3:0:6:7: Direct-Access PQ: 0 ANSI: 0 [ 5.847723] scsi 3:0:8:0: Direct-Access PQ: 0 ANSI: 0 [ 5.847785] scsi 3:0:8:1: Direct-Access PQ: 0 ANSI: 0 [ 5.848173] scsi 3:0:8:2: Direct-Access PQ: 0 ANSI: 0 [ 5.848226] scsi 3:0:8:3: Direct-Access PQ: 0 ANSI: 0 [ 5.848325] scsi 3:0:8:4: Direct-Access PQ: 0 ANSI: 0 [ 5.848389] scsi 3:0:8:5: Direct-Access PQ: 0 ANSI: 0 [ 5.848445] scsi 3:0:8:6: Direct-Access PQ: 0 ANSI: 0 [ 5.848498] scsi 3:0:8:7: Direct-Access PQ: 0 ANSI: 0 [ 5.849166] scsi 3:0:9:0: Direct-Access PQ: 0 ANSI: 0 [ 5.849220] scsi 3:0:9:1: Direct-Access PQ: 0 ANSI: 0 [ 5.849991] scsi 3:0:9:2: Direct-Access PQ: 0 ANSI: 0 [ 5.850055] scsi 3:0:9:3: Direct-Access PQ: 0 ANSI: 0 [ 5.850274] scsi 3:0:9:4: Direct-Access PQ: 0 ANSI: 0 [ 5.850380] scsi 3:0:9:5: Direct-Access PQ: 0 ANSI: 0 [ 5.850477] scsi 3:0:9:6: Direct-Access PQ: 0 ANSI: 0 [ 5.850602] scsi 3:0:9:7: Direct-Access PQ: 0 ANSI: 0 [ 5.852462] scsi 3:0:10:0: Direct-Access PQ: 0 ANSI: 0 [ 5.857171] scsi 3:0:10:1: Direct-Access PQ: 0 ANSI: 0 [ 5.858541] scsi 3:0:10:2: Direct-Access PQ: 0 ANSI: 0 [ 5.858661] scsi 3:0:10:3: Direct-Access PQ: 0 ANSI: 0 [ 5.858762] scsi 3:0:10:4: Direct-Access PQ: 0 ANSI: 0 [ 5.858864] scsi 3:0:10:5: Direct-Access PQ: 0 ANSI: 0 [ 5.858958] scsi 3:0:10:6: Direct-Access PQ: 0 ANSI: 0 [ 5.859020] scsi 3:0:10:7: Direct-Access PQ: 0 ANSI: 0 [ 5.863336] scsi 3:0:11:0: Direct-Access PQ: 0 ANSI: 0 [ 5.863438] scsi 3:0:11:1: Direct-Access PQ: 0 ANSI: 0 [ 5.863536] scsi 3:0:11:2: Direct-Access PQ: 0 ANSI: 0 [ 5.863793] scsi 3:0:11:3: Direct-Access PQ: 0 ANSI: 0 [ 5.864117] scsi 3:0:11:4: Direct-Access PQ: 0 ANSI: 0 [ 5.864224] scsi 3:0:11:5: Direct-Access PQ: 0 ANSI: 0 [ 5.864388] scsi 3:0:11:6: Direct-Access PQ: 0 ANSI: 0 [ 5.864485] scsi 3:0:11:7: Direct-Access PQ: 0 ANSI: 0 [ 5.864567] scsi 3:0:12:0: Direct-Access PQ: 0 ANSI: 0 [ 5.864812] scsi 3:0:12:1: Direct-Access PQ: 0 ANSI: 0 [ 5.864879] scsi 3:0:12:2: Direct-Access PQ: 0 ANSI: 0 [ 5.865400] scsi 3:0:12:3: Direct-Access PQ: 0 ANSI: 0 [ 5.865509] scsi 3:0:12:4: Direct-Access PQ: 0 ANSI: 0 [ 5.865770] scsi 3:0:12:5: Direct-Access PQ: 0 ANSI: 0 [ 5.865865] scsi 3:0:12:6: Direct-Access PQ: 0 ANSI: 0 [ 5.866851] scsi 3:0:12:7: Direct-Access PQ: 0 ANSI: 0 [ 5.867193] scsi 3:0:13:0: Direct-Access PQ: 0 ANSI: 0 [ 5.867312] scsi 3:0:13:1: Direct-Access PQ: 0 ANSI: 0 [ 5.867417] scsi 3:0:13:2: Direct-Access PQ: 0 ANSI: 0 [ 5.867660] scsi 3:0:13:3: Direct-Access PQ: 0 ANSI: 0 [ 5.867719] scsi 3:0:13:4: Direct-Access PQ: 0 ANSI: 0 [ 5.867824] scsi 3:0:13:5: Direct-Access PQ: 0 ANSI: 0 [ 5.868226] scsi 3:0:13:6: Direct-Access PQ: 0 ANSI: 0 [ 5.868328] scsi 3:0:13:7: Direct-Access PQ: 0 ANSI: 0 [ 5.868420] scsi 3:0:14:0: Direct-Access PQ: 0 ANSI: 0 [ 5.868507] scsi 3:0:14:1: Direct-Access PQ: 0 ANSI: 0 [ 5.868599] scsi 3:0:14:2: Direct-Access PQ: 0 ANSI: 0 [ 5.868653] scsi 3:0:14:3: Direct-Access PQ: 0 ANSI: 0 [ 5.868733] scsi 3:0:14:4: Direct-Access PQ: 0 ANSI: 0 [ 5.869178] scsi 3:0:14:5: Direct-Access PQ: 0 ANSI: 0 [ 5.869311] scsi 3:0:14:6: Direct-Access PQ: 0 ANSI: 0 [ 5.869378] scsi 3:0:14:7: Direct-Access PQ: 0 ANSI: 0 [ 5.869472] scsi 3:0:15:0: Direct-Access PQ: 0 ANSI: 0 [ 5.870097] scsi 3:0:15:1: Direct-Access PQ: 0 ANSI: 0 [ 5.870849] scsi 3:0:15:2: Direct-Access PQ: 0 ANSI: 0 [ 5.871028] scsi 3:0:15:3: Direct-Access PQ: 0 ANSI: 0 [ 5.871138] scsi 3:0:15:4: Direct-Access PQ: 0 ANSI: 0 [ 5.871229] scsi 3:0:15:5: Direct-Access PQ: 0 ANSI: 0 [ 5.871319] scsi 3:0:15:6: Direct-Access PQ: 0 ANSI: 0 [ 5.871744] scsi 3:0:15:7: Direct-Access PQ: 0 ANSI: 0 [ 5.871998] sd 3:0:0:0: [sdb] Sector size 0 reported, assuming 512. [ 5.872000] sd 3:0:0:0: [sdb] 1 512-byte logical blocks: (512 B/512 B) [ 5.872001] sd 3:0:0:0: [sdb] 0-byte physical blocks [ 5.872026] sd 3:0:0:0: [sdb] Write Protect is off [ 5.872027] sd 3:0:0:0: [sdb] Mode Sense: 00 00 00 00 [ 5.872051] sd 3:0:0:0: [sdb] Asking for cache data failed [ 5.872052] sd 3:0:0:0: [sdb] Assuming drive cache: write through [ 5.872836] Dev sdb: unable to read RDB block 1 [ 5.872838] sdb: unable to read partition table [ 5.872840] sdb: partition table beyond EOD, enabling native capacity [ 5.872873] sd 3:0:0:0: Attached scsi generic sg2 type 0 [ 5.872922] Dev sdb: unable to read RDB block 1 [ 5.872923] sdb: unable to read partition table [ 5.872925] sdb: partition table beyond EOD, truncated [ 5.873051] sd 3:0:0:0: [sdb] Sector size 0 reported, assuming 512. [ 5.873177] sd 3:0:0:1: [sdc] Sector size 0 reported, assuming 512. [ 5.873179] sd 3:0:0:1: [sdc] 1 512-byte logical blocks: (512 B/512 B) [ 5.873180] sd 3:0:0:1: [sdc] 0-byte physical blocks [ 5.873201] sd 3:0:0:0: [sdb] Attached SCSI disk [ 5.873210] sd 3:0:0:1: [sdc] Write Protect is off [ 5.873211] sd 3:0:0:1: [sdc] Mode Sense: 00 00 00 00 [ 5.873236] sd 3:0:0:1: [sdc] Asking for cache data failed [ 5.873237] sd 3:0:0:1: [sdc] Assuming drive cache: write through [ 5.873362] Dev sdc: unable to read RDB block 1 [ 5.873364] sdc: unable to read partition table [ 5.873365] sdc: partition table beyond EOD, enabling native capacity [ 5.873405] Dev sdc: unable to read RDB block 1 [ 5.873407] sdc: unable to read partition table [ 5.873408] sdc: partition table beyond EOD, truncated [ 5.873507] sd 3:0:0:1: Attached scsi generic sg3 type 0 [ 5.873525] sd 3:0:0:1: [sdc] Sector size 0 reported, assuming 512. [ 5.873594] sd 3:0:0:1: [sdc] Attached SCSI disk' ... -Tony