| 1 |
Hi All, |
| 2 |
|
| 3 |
A bit off topic, but given I'm trying this on a gentoo system and the high |
| 4 |
cumulative knowledge of contributors to this M/L, I thought I might as well |
| 5 |
ask here. I'm trying to access the various partitions within a .dmg archive, |
| 6 |
but I have so far failed to achieve this. I decompressed it with dmg2img: |
| 7 |
|
| 8 |
============================ |
| 9 |
$ dmg2img -v BaseSystem.dmg |
| 10 |
|
| 11 |
dmg2img v1.6.7 (c) vu1tur (to@×××××××××.org) |
| 12 |
|
| 13 |
BaseSystem.dmg --> BaseSystem.img |
| 14 |
|
| 15 |
reading property list, 44613 bytes from address 482080925 ... |
| 16 |
partition 0: begin=203, size=430, decoded=284 |
| 17 |
partition 1: begin=948, size=430, decoded=284 |
| 18 |
partition 2: begin=1695, size=430, decoded=284 |
| 19 |
partition 3: begin=2424, size=430, decoded=284 |
| 20 |
partition 4: begin=3137, size=35000, decoded=23564 |
| 21 |
partition 5: begin=38420, size=430, decoded=284 |
| 22 |
partition 6: begin=39148, size=430, decoded=284 |
| 23 |
partition 7: begin=39893, size=430, decoded=284 |
| 24 |
|
| 25 |
decompressing: |
| 26 |
opening partition 0 ... [2] 100.00% ok |
| 27 |
opening partition 1 ... [2] 100.00% ok |
| 28 |
opening partition 2 ... [2] 100.00% ok |
| 29 |
opening partition 3 ... [2] 100.00% ok |
| 30 |
opening partition 4 ... [584] 100.00% ok |
| 31 |
opening partition 5 ... [2] 100.00% ok |
| 32 |
opening partition 6 ... [2] 100.00% ok |
| 33 |
opening partition 7 ... [2] 100.00% ok |
| 34 |
|
| 35 |
Archive successfully decompressed as BaseSystem.img |
| 36 |
=================================================== |
| 37 |
|
| 38 |
The above output from dmg2img indicates there are 8 partitions within this |
| 39 |
image. Copying it on a USB stick: |
| 40 |
|
| 41 |
# dd if=BaseSystem.img of=/dev/sdb |
| 42 |
4194032+0 records in |
| 43 |
4194032+0 records out |
| 44 |
2147344384 bytes (2.1 GB, 2.0 GiB) copied, 586.076 s, 3.7 MB/s |
| 45 |
|
| 46 |
|
| 47 |
However, gdisk has a different view: |
| 48 |
|
| 49 |
[snip ...] |
| 50 |
Sector size (logical/physical): 512/512 bytes |
| 51 |
Disk identifier (GUID): 82509A33-366D-447F-9585-851F941276D8 |
| 52 |
Partition table holds up to 128 entries |
| 53 |
Main partition table begins at sector 2 and ends at sector 33 |
| 54 |
First usable sector is 34, last usable sector is 4193998 |
| 55 |
Partitions will be aligned on 8-sector boundaries |
| 56 |
Total free space is 262157 sectors (128.0 MiB) |
| 57 |
|
| 58 |
Number Start (sector) End (sector) Size Code Name |
| 59 |
1 40 3931847 1.9 GiB AF00 disk image |
| 60 |
|
| 61 |
gdisk only shows one partition, which I can mount on the USB stick as a single |
| 62 |
HFS+ partition. |
| 63 |
|
| 64 |
7z shows the filesystem contents within the dmg and img archive, but it does |
| 65 |
not output each partition: |
| 66 |
|
| 67 |
Scanning the drive for archives: |
| 68 |
1 file, 482126050 bytes (460 MiB) |
| 69 |
|
| 70 |
Listing archive: BaseSystem.dmg |
| 71 |
|
| 72 |
-- |
| 73 |
Path = BaseSystem.dmg |
| 74 |
Type = Dmg |
| 75 |
Physical Size = 482126050 |
| 76 |
Method = Copy Zero2 ZLIB CRC |
| 77 |
Blocks = 590 |
| 78 |
---- |
| 79 |
Path = 4.hfs |
| 80 |
Size = 2013085696 |
| 81 |
Packed Size = 482080513 |
| 82 |
Comment = disk image (Apple_HFS : 4) |
| 83 |
Method = Copy Zero2 ZLIB CRC |
| 84 |
-- |
| 85 |
Path = 4.hfs |
| 86 |
Type = HFS |
| 87 |
Physical Size = 2013085696 |
| 88 |
Method = HFS+ |
| 89 |
Cluster Size = 4096 |
| 90 |
Free Space = 740196352 |
| 91 |
Created = 2018-10-24 02:10:14 |
| 92 |
Modified = 2018-10-24 09:23:00 |
| 93 |
|
| 94 |
Date Time Attr Size Compressed Name |
| 95 |
------------------- ----- ------------ ------------ ------------------------ |
| 96 |
2018-10-24 09:14:13 D.... OS X Base System |
| 97 |
2018-10-24 09:10:14 D.... OS X Base System/.HFS+ |
| 98 |
Private Directory Data |
| 99 |
2018-08-17 21:54:02 D.... OS X Base System/.vol |
| 100 |
[snip ...] |
| 101 |
|
| 102 |
|
| 103 |
Any idea how I can access each partition within the disk image itself on |
| 104 |
Linux? |
| 105 |
|
| 106 |
-- |
| 107 |
Regards, |
| 108 |
Mick |
Archives