Hi All, A bit off topic, but given I'm trying this on a gentoo system and the high cumulative knowledge of contributors to this M/L, I thought I might as well ask here. I'm trying to access the various partitions within a .dmg archive, but I have so far failed to achieve this. I decompressed it with dmg2img:
============================ $ dmg2img -v BaseSystem.dmg dmg2img v1.6.7 (c) vu1tur (t...@vu1tur.eu.org) BaseSystem.dmg --> BaseSystem.img reading property list, 44613 bytes from address 482080925 ... partition 0: begin=203, size=430, decoded=284 partition 1: begin=948, size=430, decoded=284 partition 2: begin=1695, size=430, decoded=284 partition 3: begin=2424, size=430, decoded=284 partition 4: begin=3137, size=35000, decoded=23564 partition 5: begin=38420, size=430, decoded=284 partition 6: begin=39148, size=430, decoded=284 partition 7: begin=39893, size=430, decoded=284 decompressing: opening partition 0 ... [2] 100.00% ok opening partition 1 ... [2] 100.00% ok opening partition 2 ... [2] 100.00% ok opening partition 3 ... [2] 100.00% ok opening partition 4 ... [584] 100.00% ok opening partition 5 ... [2] 100.00% ok opening partition 6 ... [2] 100.00% ok opening partition 7 ... [2] 100.00% ok Archive successfully decompressed as BaseSystem.img =================================================== The above output from dmg2img indicates there are 8 partitions within this image. Copying it on a USB stick: # dd if=BaseSystem.img of=/dev/sdb 4194032+0 records in 4194032+0 records out 2147344384 bytes (2.1 GB, 2.0 GiB) copied, 586.076 s, 3.7 MB/s However, gdisk has a different view: [snip ...] Sector size (logical/physical): 512/512 bytes Disk identifier (GUID): 82509A33-366D-447F-9585-851F941276D8 Partition table holds up to 128 entries Main partition table begins at sector 2 and ends at sector 33 First usable sector is 34, last usable sector is 4193998 Partitions will be aligned on 8-sector boundaries Total free space is 262157 sectors (128.0 MiB) Number Start (sector) End (sector) Size Code Name 1 40 3931847 1.9 GiB AF00 disk image gdisk only shows one partition, which I can mount on the USB stick as a single HFS+ partition. 7z shows the filesystem contents within the dmg and img archive, but it does not output each partition: Scanning the drive for archives: 1 file, 482126050 bytes (460 MiB) Listing archive: BaseSystem.dmg -- Path = BaseSystem.dmg Type = Dmg Physical Size = 482126050 Method = Copy Zero2 ZLIB CRC Blocks = 590 ---- Path = 4.hfs Size = 2013085696 Packed Size = 482080513 Comment = disk image (Apple_HFS : 4) Method = Copy Zero2 ZLIB CRC -- Path = 4.hfs Type = HFS Physical Size = 2013085696 Method = HFS+ Cluster Size = 4096 Free Space = 740196352 Created = 2018-10-24 02:10:14 Modified = 2018-10-24 09:23:00 Date Time Attr Size Compressed Name ------------------- ----- ------------ ------------ ------------------------ 2018-10-24 09:14:13 D.... OS X Base System 2018-10-24 09:10:14 D.... OS X Base System/.HFS+ Private Directory Data 2018-08-17 21:54:02 D.... OS X Base System/.vol [snip ...] Any idea how I can access each partition within the disk image itself on Linux? -- Regards, Mick
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