Comments on: Make a RAM Disk Easily with TmpDisk for Mac OS X http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/ News, tips, software, reviews, and more for Mac OS X, iPhone, iPad Sat, 25 May 2013 09:32:51 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: ofloveandhate http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-419633 ofloveandhate Wed, 22 Aug 2012 16:35:29 +0000 http://osxdaily.com/?p=23740#comment-419633 I use ramdisks to avoid heavily taxing my hard drives, and network. it permits distributed processes over a network to write to their own ram, instead of across the network, through a single computer, onto a hard drive, back through the computer and network, and back to the remote machine. writing and erasing billions of tiny files per hour? seems like a job for a ramdisk. I use ramdisks to avoid heavily taxing my hard drives, and network. it permits distributed processes over a network to write to their own ram, instead of across the network, through a single computer, onto a hard drive, back through the computer and network, and back to the remote machine.
writing and erasing billions of tiny files per hour? seems like a job for a ramdisk.

]]> By: Flemming http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-346158 Flemming Tue, 28 Feb 2012 08:03:03 +0000 http://osxdaily.com/?p=23740#comment-346158 @Zedd - the 2.2GB limit (or 2.1GB actually) was removed with Snow Leopard (10.6). So it is only true for OSx versions <10.6 @Zedd – the 2.2GB limit (or 2.1GB actually) was removed with Snow Leopard (10.6). So it is only true for OSx versions <10.6

]]> By: Chris http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-313070 Chris Tue, 10 Jan 2012 07:19:46 +0000 http://osxdaily.com/?p=23740#comment-313070 You mean a normal disk? You mean a normal disk?

]]> By: RAM disk no Mac! Sim! | bernabauer.com http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-287344 RAM disk no Mac! Sim! | bernabauer.com Sun, 27 Nov 2011 15:54:56 +0000 http://osxdaily.com/?p=23740#comment-287344 [...] OS X Daily. Maca Dobravel Orificio Portatil Mala Massagem Divã AluminioMais info»R$ [...] [...] OS X Daily. Maca Dobravel Orificio Portatil Mala Massagem Divã AluminioMais info»R$ [...]

]]> By: Pippox0 http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277931 Pippox0 Tue, 15 Nov 2011 20:18:08 +0000 http://osxdaily.com/?p=23740#comment-277931 I use vmware fusion and windows XP virtualized. I would like to try to create a 4 Gb ram disk and to move the xp hd on ram disk. Cheers Pippox0 I use vmware fusion and windows XP virtualized.
I would like to try to create a 4 Gb ram disk and to move the xp hd on ram disk.

Cheers

Pippox0

]]> By: Hayo Baan http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277922 Hayo Baan Tue, 15 Nov 2011 20:00:51 +0000 http://osxdaily.com/?p=23740#comment-277922 Sorry Zedd, why do you keep saying something is impossible for "all and everything" as you can clearly create a ramdisk of greater size than 2.2GB. Heck, for fun I just created a 10TB (yes, 10 Terra Bytes) Ram Disk, without any problem. ~$ diskutil erasevolume HFS+ BIGDISK `hdiutil attach -nomount ram://20480000000` Started erase on disk4 Unmounting disk Erasing Initialized /dev/rdisk4 as a 10 TB HFS Plus volume Mounting disk Finished erase on disk4 BIGDISK ~$ df -h /Volumes/BIGDISK/ Filesystem Size Used Avail Capacity Mounted on /dev/disk4 9.5Ti 993Mi 9.5Ti 1% /Volumes/BIGDISK Now filling it would of course be a bit problematic as I don't have that much ram, nor space on my swap drive, but at least it shows it is possible to create such big ram disks! Sorry Zedd, why do you keep saying something is impossible for “all and everything” as you can clearly create a ramdisk of greater size than 2.2GB.

Heck, for fun I just created a 10TB (yes, 10 Terra Bytes) Ram Disk, without any problem.
~$ diskutil erasevolume HFS+ BIGDISK `hdiutil attach -nomount ram://20480000000`
Started erase on disk4
Unmounting disk
Erasing
Initialized /dev/rdisk4 as a 10 TB HFS Plus volume
Mounting disk
Finished erase on disk4 BIGDISK
~$ df -h /Volumes/BIGDISK/
Filesystem Size Used Avail Capacity Mounted on
/dev/disk4 9.5Ti 993Mi 9.5Ti 1% /Volumes/BIGDISK

Now filling it would of course be a bit problematic as I don’t have that much ram, nor space on my swap drive, but at least it shows it is possible to create such big ram disks!

]]> By: Zedd http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277807 Zedd Tue, 15 Nov 2011 17:01:11 +0000 http://osxdaily.com/?p=23740#comment-277807 Its the same for ALL versions of OSX. Its the same for ALL versions of OSX.

]]> By: Hayo http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277775 Hayo Tue, 15 Nov 2011 15:23:28 +0000 http://osxdaily.com/?p=23740#comment-277775 Like Mario, I have been creating RAM disks with (much) bigger sizes than 2.2GB without a problem so you are obviously wrong in stating that this is true for "everyone". What version of OS X are you using? Like Mario, I have been creating RAM disks with (much) bigger sizes than 2.2GB without a problem so you are obviously wrong in stating that this is true for “everyone”.

What version of OS X are you using?

]]> By: Zedd http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277756 Zedd Tue, 15 Nov 2011 14:52:29 +0000 http://osxdaily.com/?p=23740#comment-277756 Actually it IS true for everyone. 2.2GB is the size limit. Actually it IS true for everyone. 2.2GB is the size limit.

]]> By: Mario http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277719 Mario Tue, 15 Nov 2011 14:02:35 +0000 http://osxdaily.com/?p=23740#comment-277719 If you have an SSD, then it's actually very useful to create RAM disk for temp files, for downloading code, unzipping it, compiling and toying around with stuff, so you avoid writing stuff to your SSD that you won't necessarily keep. This extends the life of your SSD. If you have an SSD, then it’s actually very useful to create RAM disk for temp files, for downloading code, unzipping it, compiling and toying around with stuff, so you avoid writing stuff to your SSD that you won’t necessarily keep. This extends the life of your SSD.

]]> By: Mario http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277717 Mario Tue, 15 Nov 2011 14:00:38 +0000 http://osxdaily.com/?p=23740#comment-277717 That's not true. $ which diskutil /usr/sbin/diskutil $ file /usr/sbin/diskutil /usr/sbin/diskutil: Mach-O universal binary with 3 architectures /usr/sbin/diskutil (for architecture x86_64): Mach-O 64-bit executable x86_64 /usr/sbin/diskutil (for architecture i386): Mach-O executable i386 /usr/sbin/diskutil (for architecture ppc7400): Mach-O executable ppc $ I create and use 10 GB RAM disks all the time. That’s not true.

$ which diskutil
/usr/sbin/diskutil
$ file /usr/sbin/diskutil
/usr/sbin/diskutil: Mach-O universal binary with 3 architectures
/usr/sbin/diskutil (for architecture x86_64): Mach-O 64-bit executable x86_64
/usr/sbin/diskutil (for architecture i386): Mach-O executable i386
/usr/sbin/diskutil (for architecture ppc7400): Mach-O executable ppc
$

I create and use 10 GB RAM disks all the time.

]]> By: clasqm http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277592 clasqm Tue, 15 Nov 2011 09:19:20 +0000 http://osxdaily.com/?p=23740#comment-277592 If your "hard drive" is a SSD, then whether you are storing data in one kind of chip-based memory (RAM) or another (SSD)is likely to bring only minimal benefits. RAMdisks were useful 30 years ago when hard drives were slown and operating systems could only address 256 or 512 KB of RAM. If you had 1MB system you could turn the rest into a speedy RAMdisk. Today, I really don't see the point. If your “hard drive” is a SSD, then whether you are storing data in one kind of chip-based memory (RAM) or another (SSD)is likely to bring only minimal benefits.

RAMdisks were useful 30 years ago when hard drives were slown and operating systems could only address 256 or 512 KB of RAM. If you had 1MB system you could turn the rest into a speedy RAMdisk.

Today, I really don’t see the point.

]]> By: Steve http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277565 Steve Tue, 15 Nov 2011 07:45:33 +0000 http://osxdaily.com/?p=23740#comment-277565 How's the performance compared to normal RAM ? How’s the performance compared to normal RAM ?

]]> By: Skyline http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277400 Skyline Tue, 15 Nov 2011 02:08:56 +0000 http://osxdaily.com/?p=23740#comment-277400 I've been using Esperance DV but this seems much sleeker... although Esperance has good backup features. I’ve been using Esperance DV but this seems much sleeker… although Esperance has good backup features.

]]> By: Zedd http://osxdaily.com/2011/11/14/make-a-ram-disk-easily-with-tmpdisk-for-mac-os-x/#comment-277359 Zedd Tue, 15 Nov 2011 00:28:51 +0000 http://osxdaily.com/?p=23740#comment-277359 Size is limited to 2.2GB due to the diskutil being 32 bit. Use the raid command to make one larger than 2.2GB. The size is in blocks, divide by 256 to get the MB size. 3.5GB diskutil erasevolume HFS+ "r1" `hdiutil attach -nomount ram://3959731` diskutil erasevolume HFS+ "r2" `hdiutil attach -nomount ram://3959731` diskutil createRAID stripe RaidRamDisk HFS+ /Volumes/r1 /Volumes/r2 Size is limited to 2.2GB due to the diskutil being 32 bit.

Use the raid command to make one larger than 2.2GB. The size is in blocks, divide by 256 to get the MB size.

3.5GB
diskutil erasevolume HFS+ “r1″ `hdiutil attach -nomount ram://3959731`
diskutil erasevolume HFS+ “r2″ `hdiutil attach -nomount ram://3959731`
diskutil createRAID stripe RaidRamDisk HFS+ /Volumes/r1 /Volumes/r2

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