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I downloaded a DMG of some commercial Mac software (CSSEdit) but I found that the DMG wouldn't mount. I tried another image from the same company, and then a number of images I had laying around from other software. About half of them mount and half don't. The error is always "no mountable file systems"
My google-foo reveals only some isolated incidents, and the repeated suggestion to reboot (I have, twice). The disk will not mount from Disk Utility either (nor does attempting to verify or repair it from there have any effect). I've also tried re-downloading this image several times using several different programs.
I recently updated to 10.5.8 in case that's relevant.
Here's a paste of what I get when I try to mount the DMG from the command line.
loki:Downloads peter$ hdiutil attach CSSEdit\ 2.6.dmg -Verbose Initializing… DIBackingStoreInstantiatorProbe: interface 0, score 100, CBSDBackingStore DIBackingStoreInstantiatorProbe: interface 1, score -1000, CBundleBackingStore DIBackingStoreInstantiatorProbe: interface 2, score -1000, CRAMBackingStore DIBackingStoreInstantiatorProbe: interface 3, score 100, CCarbonBackingStore DIBackingStoreInstantiatorProbe: interface 4, score -1000, CDevBackingStore DIBackingStoreInstantiatorProbe: interface 5, score -1000, CCURLBackingStore DIBackingStoreInstantiatorProbe: interface 6, score -1000, CVectoredBackingStore DIBackingStoreInstantiatorProbe: selecting CBSDBackingStore DIBackingStoreInstantiatorProbe: interface 0, score 100, CBSDBackingStore DIBackingStoreInstantiatorProbe: interface 1, score -1000, CBundleBackingStore DIBackingStoreInstantiatorProbe: interface 2, score -1000, CRAMBackingStore DIBackingStoreInstantiatorProbe: interface 3, score 100, CCarbonBackingStore DIBackingStoreInstantiatorProbe: interface 4, score -1000, CDevBackingStore DIBackingStoreInstantiatorProbe: interface 5, score -1000, CCURLBackingStore DIBackingStoreInstantiatorProbe: interface 6, score -1000, CVectoredBackingStore DIBackingStoreInstantiatorProbe: selecting CBSDBackingStore DIFileEncodingInstantiatorProbe: interface 0, score -1000, CMacBinaryEncoding DIFileEncodingInstantiatorProbe: interface 1, score -1000, CAppleSingleEncoding DIFileEncodingInstantiatorProbe: interface 2, score -1000, CEncryptedEncoding DIFileEncodingInstantiatorProbe: nothing to select. DIFileEncodingInstantiatorProbe: interface 0, score 900, CUDIFEncoding DIFileEncodingInstantiatorProbe: selecting CUDIFEncoding DIFileEncodingNewWithBackingStore: CUDIFEncoding DIFileEncodingNewWithBackingStore: instantiator returned 0 DIFileEncodingInstantiatorProbe: interface 0, score -1000, CSegmentedNDIFEncoding DIFileEncodingInstantiatorProbe: interface 1, score -1000, CSegmentedUDIFEncoding DIFileEncodingInstantiatorProbe: interface 2, score -1000, CSegmentedUDIFRawEncoding DIFileEncodingInstantiatorProbe: nothing to select. DIDiskImageInstantiatorProbe: interface 0, score 0, CDARTDiskImage DIDiskImageInstantiatorProbe: interface 1, score 0, CDiskCopy42DiskImage DIDiskImageInstantiatorProbe: interface 2, score -1000, CNDIFDiskImage DIDiskImageInstantiatorProbe: interface 3, score 1000, CUDIFDiskImage CRawDiskImage: data fork length 0x000000000022EE83 (2289283) not a multiple of 512. DIDiskImageInstantiatorProbe: interface 5, score -100, CRawDiskImage DIDiskImageInstantiatorProbe: interface 6, score -100, CShadowedDiskImage DIDiskImageInstantiatorProbe: interface 7, score 0, CSparseDiskImage DIDiskImageInstantiatorProbe: interface 8, score 0, CSparseBundleDiskImage DIDiskImageInstantiatorProbe: interface 9, score -1000, CCFPlugInDiskImage DIDiskImageInstantiatorProbe: interface 10, score -100, CWrappedDiskImage DIDiskImageInstantiatorProbe: selecting CUDIFDiskImage DIDiskImageNewWithBackingStore: CUDIFDiskImage DIDiskImageNewWithBackingStore: instantiator returned 0 Verifying… Verification completed… Error 0 (Unknown error: 0). expected CRC32 $DA5349F2 Attaching… DI_kextWaitQuiet: about to call IOServiceWaitQuiet... DI_kextWaitQuiet: IOServiceWaitQuiet took 0.000008 seconds 2009-08-06 21:48:36.456 diskimages-helper[1607:381b] -serveImage: attaching drive { autodiskmount = 1; "hdiagent-drive-identifier" = "921062E3-5965-477A-85C8-C93979468CF9"; "unmount-timeout" = 0; } 2009-08-06 21:48:36.462 diskimages-helper[1607:381b] -serveImage: connecting to myDrive 0x00004707 2009-08-06 21:48:36.463 diskimages-helper[1607:381b] -serveImage: register _readBuffer 0x0x468000 with myDrive 0x0x0 2009-08-06 21:48:36.463 diskimages-helper[1607:381b] -serveImage: activating drive port 0x0x4807 2009-08-06 21:48:36.463 diskimages-helper[1607:381b] _serveImage: set cache enabled=TRUE returned SUCCESS. 2009-08-06 21:48:36.464 diskimages-helper[1607:381b] _serveImage: set on IO thread=TRUE returned SUCCESS. 2009-08-06 21:48:36.464 diskimages-helper[1607:381b] -serveImage: starting server loop - myPort is 0x0x4807 Volume check completed… Mounting… ^[[Adiskimages-helper: DI_kextDriveGetRequest returned 0x00000025 (37) ((os/kern) object terminated). Attaching… Error 109 (no mountable file systems). Finishing… DIHLDiskImageAttach() returned 109 hdiutil: attach failed - no mountable file systems loki:Downloads peter$ hdiutil imageinfo CSSEdit\ 2.6.dmg -Verbose hdiutil: imageinfo: processing "CSSEdit 2.6.dmg" DIBackingStoreInstantiatorProbe: interface 0, score 100, CBSDBackingStore DIBackingStoreInstantiatorProbe: interface 1, score -1000, CBundleBackingStore DIBackingStoreInstantiatorProbe: interface 2, score -1000, CRAMBackingStore DIBackingStoreInstantiatorProbe: interface 3, score 100, CCarbonBackingStore DIBackingStoreInstantiatorProbe: interface 4, score -1000, CDevBackingStore DIBackingStoreInstantiatorProbe: interface 5, score -1000, CCURLBackingStore DIBackingStoreInstantiatorProbe: interface 6, score -1000, CVectoredBackingStore DIBackingStoreInstantiatorProbe: selecting CBSDBackingStore DIFileEncodingInstantiatorProbe: interface 0, score -1000, CMacBinaryEncoding DIFileEncodingInstantiatorProbe: interface 1, score -1000, CAppleSingleEncoding DIFileEncodingInstantiatorProbe: interface 2, score -1000, CEncryptedEncoding DIFileEncodingInstantiatorProbe: nothing to select. DIFileEncodingInstantiatorProbe: interface 0, score 900, CUDIFEncoding DIFileEncodingInstantiatorProbe: selecting CUDIFEncoding DIFileEncodingNewWithBackingStore: CUDIFEncoding DIFileEncodingNewWithBackingStore: instantiator returned 0 DIFileEncodingInstantiatorProbe: interface 0, score -1000, CSegmentedNDIFEncoding DIFileEncodingInstantiatorProbe: interface 1, score -1000, CSegmentedUDIFEncoding DIFileEncodingInstantiatorProbe: interface 2, score -1000, CSegmentedUDIFRawEncoding DIFileEncodingInstantiatorProbe: nothing to select. DIDiskImageInstantiatorProbe: interface 0, score 0, CDARTDiskImage DIDiskImageInstantiatorProbe: interface 1, score 0, CDiskCopy42DiskImage DIDiskImageInstantiatorProbe: interface 2, score -1000, CNDIFDiskImage DIDiskImageInstantiatorProbe: interface 3, score 1000, CUDIFDiskImage CRawDiskImage: data fork length 0x000000000022EE83 (2289283) not a multiple of 512. DIDiskImageInstantiatorProbe: interface 5, score -100, CRawDiskImage DIDiskImageInstantiatorProbe: interface 6, score -100, CShadowedDiskImage DIDiskImageInstantiatorProbe: interface 7, score 0, CSparseDiskImage DIDiskImageInstantiatorProbe: interface 8, score 0, CSparseBundleDiskImage DIDiskImageInstantiatorProbe: interface 9, score -1000, CCFPlugInDiskImage DIDiskImageInstantiatorProbe: interface 10, score -100, CWrappedDiskImage DIDiskImageInstantiatorProbe: selecting CUDIFDiskImage DIDiskImageNewWithBackingStore: CUDIFDiskImage DIDiskImageNewWithBackingStore: instantiator returned 0 Format: UDZO Backing Store Information: Class Name: CUDIFEncoding Backing Store Information: Name: CSSEdit 2.6.dmg URL: file://localhost/Users/peter/Downloads/CSSEdit%202.6.dmg Class Name: CBSDBackingStore URL: file://localhost/Users/peter/Downloads/CSSEdit%202.6.dmg Name: CSSEdit 2.6.dmg Partition Information: 0: Checksum Value: $675BE18B Partition Number: 0 Checksum Type: CRC32 Name: gehele schijf (Apple_HFS : 0) Checksum Type: CRC32 partitions: appendable: true partition-scheme: none block-size: 512 burnable: true partitions: 0: partition-length: 18432 partition-synthesized: true partition-hint: Apple_HFS partition-name: whole disk partition-filesystems: HFS+: partition-start: 0 Properties: Partitioned: false Software License Agreement: false Compressed: true Kernel Compatible: true Encrypted: false Checksummed: true Checksum Value: $DA5349F2 Size Information: Total Bytes: 9437184 Compressed Bytes: 2289283 Compressed Ratio: 0.26906180417644582 CUDIFEncoding-bytes-wasted: 0 Sector Count: 18432 Total Non-Empty Bytes: 8507904 Total Empty Bytes: 929280 CUDIFEncoding-bytes-in-use: 2289283 CUDIFEncoding-bytes-total: 2289283 Class Name: CUDIFDiskImage Format Description: UDIF read-only compressed (zlib) udif-ordered-chunks: true Segments: 0: /Users/peter/Downloads/CSSEdit 2.6.dmg Resize limits (per hdiutil resize -limits): 16624 18432 18432 hdiutil: imageinfo: result: 0
An update on this. I've replaced my hard drive with an SSD, cloning all files over. Using this new drive (but same OS, configs, etc) I downloaded Little Snitch fresh (trying both the stable and nightly versions) and got this error consistently. My problem is definitely in software. – Peter Burns – 2012-02-09T19:37:33.153
I was using a .sparseimage disk image to hold a FCPX event and project. I was able to access it many times, but then all of a sudden, I got the 'no mountable file system' error. I tried rebooting and repairing permissions with no luck. I then tried simonair's advice and Terminal commands, and was able to mount the disk again. Whew. I definitely recommend trying his advice, as it really saved my bacon. – None – 2012-03-08T14:10:58.590