如何在 macOS 上使用 vboximg-mount 时修复“hdiutil：附加失败 - 图像无法识别”错误

Question

I'm unable to mount a VHD file even though I can mount the DMG it was made from and file seems to think both the vhdd and .dmg file are the same kind of file. I'm on macOS 10.14.6 with VirtualBox 6.0.12r133076.

Here's a transcript of what I'm trying to do (ending with the error):

$ hdiutil create -megabytes 2 -fs ExFAT foo.dmg
created: /Users/matt/tmp/foo.dmg

$ vboxmanage convertfromraw --format vhd foo.dmg foo.vhd
Converting from raw image file="foo.dmg" to file="foo.vhd"...
Creating dynamic image with size 2097152 bytes (2MB)...

$ mkdir foo_mnt

$ vboximg-mount --image=$(pwd)/foo.vhd foo_mnt

$ file foo.dmg
foo.dmg: DOS/MBR boot sector; partition 1 : ID=0x7, start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 1, 4095 sectors, extended partition table (last)

$ file foo_mnt/vhdd
foo_mnt/vhdd: DOS/MBR boot sector; partition 1 : ID=0x7, start-CHS (0x3ff,254,63), end-CHS (0x3ff,254,63), startsector 1, 4095 sectors, extended partition table (last)

$ hdiutil attach foo.dmg
/dev/disk3              FDisk_partition_scheme          
/dev/disk3s1            Windows_NTFS                    /Volumes/Untitled 1

$ hdiutil attach foo_mnt/vhdd
hdiutil: attach failed - image not recognized

Update : Could it really just be the file extension? If I do ln -s foo_mnt/vhdd something.dmg I can then mount with

$ hdiutil attach something.dmg

Answer 1

I got this error too. It turned out that I was in the wrong folder. It should have said "file not found". Maybe they will fix it one day.