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Volume size limits under HFS and HFS+

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#1 Bunsen



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  • LocationMelbourne, Australia

Posted 28 March 2016 - 09:42 AM

With thanks to defor for compiling this information over here.



These are the limits for HFS support on Macintosh System/MacOS:

(I had to dig a bit to find this)


Maximum HFS partition sizes by OS version:

Macintosh System 1.x - 7.1.x : 2GB1
Macintosh System 7.5.x : 4GB1
Macintosh Mac OS 7.6.x - 8.1 : 4GB (68K without SCSI Manager 4.3)2
Macintosh Mac OS 7.6.x - X 10.5.x3 : 2TB1 (SCSI Manager 4.3 on 68040 or later, excluding Quadra 630 and 68040 PowerBooks4)
Maximum HFS+ partition sizes by OS version:
Macintosh Mac OS 8.x - X 1.x : 2TB4
Macintosh Mac OS 10.2.x : 8TB4
Macintosh Mac OS 10.3.x - 10.5.2 : 16TB4
Macintosh Mac OS 10.5.3 - CURRENT : 8EB4
in the end, you'd be hard pressed to find a consumer SSD that is larger than 2TB, so the reality is:
HFS on up to 2TB drives works fine. IF you have a computer that can support it (i.e. 68040* or later, and System 7.6 or later)
A Mac IICI won't support SCSI Manager 4.3's volume size increase, so in theory, the max you could ever see is a 4GB volume.
I personally have two Power Computing PowerTower Pros with Sonnet SATA cards in 7.6.1, with a 2TB SATA drive as the boot volume.
YES, minimum file size is HUGE, but it works.
If you insist on photo proof, I'm more than happy to oblige.


1 http://classroom.syn...rive-15364.html ( HFS Volume Limitations)

http://lowendmac.com...-end-of-an-era/ ( In Defense of 7.6)

3 http://www.computerw...ow-leopard.html

https://tidbits.com/article/1756 ( Hardware support)

5 https://support.appl.../en-us/HT201711


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