Apple Partition Map
From Just Solve the File Format Problem
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| − | '''Apple Partition Map''' ('''APM''') is a format that describes the partition layout of a disk. When in the form of a disk image file, it can be thought of as a container format for multiple [[filesystem]] image files. | + | '''Apple Partition Map''' ('''APM''') is a format that describes the partition layout of a disk. When in the form of a disk image file, it can be thought of as a container format for multiple [[filesystem]] image files. Can be found in [[DMG]] and Roxio [[TOAST]] images. |
== Identification == | == Identification == | ||
| − | The ASCII characters "PM" appear at offset 512, and (usually?) also at offset 1024. They may also appear at larger multiples of 512. | + | Files using APM generally begin with hex values {{magic|4552}} follow by <code>0200</code> for standard 512 block size and <code>0800</code> for 2048 block size. |
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| + | The ASCII characters "PM" appear at offset 512, and (usually?) also at offset 1024. They may also appear at larger multiples of 512. Also found in multiples of 2048. | ||
== Software == | == Software == | ||
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* https://archive.org/details/cdrom-golden-orchard-10 → GoldenOrchard1.0.iso | * https://archive.org/details/cdrom-golden-orchard-10 → GoldenOrchard1.0.iso | ||
* https://archive.org/details/cdrom-golden-orchard-12 → GoldenOrchard1.2.iso | * https://archive.org/details/cdrom-golden-orchard-12 → GoldenOrchard1.2.iso | ||
| + | * [https://archive.org/download/691-6551-A2ZiWork_v9.0.3._Install_Disc_2009_DVD iWork install DVD in Toast format] | ||
== Links == | == Links == | ||
* [[Wikipedia:Apple Partition Map|Wikipedia article]] | * [[Wikipedia:Apple Partition Map|Wikipedia article]] | ||
* [http://www.mactech.com/articles/mactech/Vol.23/23.03/APMtoGPT/index.html Apple's Transition from Apple Partition Map to the GUID Partition Table] | * [http://www.mactech.com/articles/mactech/Vol.23/23.03/APMtoGPT/index.html Apple's Transition from Apple Partition Map to the GUID Partition Table] | ||
| + | * [https://opensource.apple.com/source/IOStorageFamily/IOStorageFamily-116/IOApplePartitionScheme.cpp.auto.html Apple Partition Scheme code] | ||
[[Category:Macintosh]] | [[Category:Macintosh]] | ||
Revision as of 04:26, 9 March 2022
Apple Partition Map (APM) is a format that describes the partition layout of a disk. When in the form of a disk image file, it can be thought of as a container format for multiple filesystem image files. Can be found in DMG and Roxio TOAST images.
Contents |
Identification
Files using APM generally begin with hex values 4552 follow by 0200 for standard 512 block size and 0800 for 2048 block size.
The ASCII characters "PM" appear at offset 512, and (usually?) also at offset 1024. They may also appear at larger multiples of 512. Also found in multiples of 2048.
Software
- HFSExplorer
- 7-Zip [Ed. note: Seems unreliable. Supports GoldenOrchard1.2.iso but not GoldenOrchard1.0.iso.]
- Supported natively by some Apple Macintosh operating systems.
Sample files
- https://archive.org/details/cdrom-golden-orchard-10 → GoldenOrchard1.0.iso
- https://archive.org/details/cdrom-golden-orchard-12 → GoldenOrchard1.2.iso
- iWork install DVD in Toast format
