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macrumors newbie
Original poster
Dec 28, 2014
United Kingdom
Im wondering why it shows 18.9mb free space when it isnt? And is the 18.9mb Im seeing in about my mac since I have local snapshots disabled on time machine. Im wondering why it still shows backups.

Available: 95.42 GB (95,422,865,408 bytes)
Capacity: 120.1 GB (120,101,797,888 bytes)
Mount Point: /
File System: Journaled HFS+
Writable: Yes
Ignore Ownership: No
BSD Name: disk1
Volume UUID: 8988213D-536F-3035-BDE7-995AC0E3CBF6
Logical Volume:
Revertible: Yes (no decryption required)
Encrypted: No
LV UUID: 9FFDA681-1776-4237-8F3C-0CAAD058E5BE
Logical Volume Group:
Name: Mackintosh HD
Size: 120.47 GB (120,473,067,520 bytes)
Free Space: 18.9 MB (18,948,096 bytes)
LVG UUID: 78EB44E4-21B7-4D45-9B69-60B9F8D75FCB
Physical Volumes:
Media Name: APPLE SSD SD0128F Media
Size: 120.47 GB (120,473,067,520 bytes)
Medium Type: SSD
Protocol: PCI
Internal: Yes
Partition Map Type: GPT (GUID Partition Table)
Status: Online
S.M.A.R.T. Status: Verified
PV UUID: 196EC9BA-76AD-474F-A25C-DF6E7221166B


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    Mac Storage.png
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marlon bishop

macrumors member
Jan 4, 2012
A backup is a file that stores files in case something happens to the device being backed up. like saving a game on pc or console.. Hope it helps!
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macrumors 6502a
Jul 27, 2012
WNY or Utica
I know this is a necrobump, but I came here from Google and am trying to build a home Windows 10 PC, and I want to put in a Ryzen 1600x processor and Vega graphics card. But, I also want fast storage speeds. I've been used to the fast speed of this MacBook Pro in OP's post.

I have 3 questions.

  1. Is the drive in OP's post and M.2 NVMe drive?
  2. If it is, how fast is it?
  3. Would I be better off using a SATA SSD?
  4. Can you notice the difference in speeds?



macrumors 68000
Nov 2, 2010
what has this question to do with this thread? and than a 2 year old. cheeese

why don't u just google for the read/write speeds of the SSD??? hint: technical specification


macrumors G5
Jul 30, 2003
Easy enough, if you search by model number.
OCZ RVD400-M22280-512G-A
Samsung 850 EVO 1TB

The Toshiba/OCZ, in theory, will be 4 to 5x faster than the Samsung, assuming the bus supports it at full speed.
Will you notice the difference? Depends on how fast you blink :D
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