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Questions tagged [ramdisk]

The tag has no usage guidance.

70
votes
7answers
84k views

Creating a ram disk on Linux

I have a machine with 62GB of RAM, and a trunk that's only 7GB, so I thought I would create a RAM disk and compile there. I am not a Linux expert. I found instructions on the internet to create the ...
-4
votes
2answers
808 views

How can I forbid the Linux kernel from accessing a certain RAM disk? [closed]

Can anyone tell me if the Linux kernel has access to RAM Disks and if so, how can we forbid it? I want to have a RAM Disk that I'm the only one who has access and can change the information, and I ...
9
votes
3answers
8k views

Debian 8 KVM Guest - Loading initial ramdisk

I have updated my KVM management script for Ubuntu 14.04 KVM hosts to support debian 8 guests. After a manual installation (preseed script does not work yet), I am stuck with the the following message ...
8
votes
7answers
31k views

Is there a linux OS that can be loaded entirely into RAM?

I have 32 GB of memory in my PC. This is more than enough for a linux OS. Is there an easy to use version of Linux (Ubuntu preferably) that can be booted via optical or USB disk and be run completely ...
3
votes
2answers
922 views

du on ramdisk displays 3GB less than df

I understand there's often a some discrepancy between du and df but when I du my ramdisk it occupies 13G, whereas df shows it's using 16GB. This seems quite a big difference. Is this normal? [root@...
2
votes
2answers
3k views

How to create a real RAM disk that reserves memory?

I've been shortly using the following on Linux Debian Jessie to create a "RAM disk": mount -o size=1G -t tmpfs none /mnt/tmpfs But I was told it doesn't reserve memory, which I didn't know. I would ...
1
vote
2answers
1k views

How do you create block RAM Disks on demand?

I learned that I can do modprobe brd rd_nr=1 rd_size=4585760 max_part=1 if I want to create a ram block device at /dev/ram0 but lets say I want to flush the device (to free the ram), then delete it ...
0
votes
0answers
74 views

Unetbootin + DB gives error: `Could not find ramdisk image /ubninit`

I installed dban-2.3.0_i586.iso onto a usb with unetbootin on a mac. But when I run it on a computer and select dban on the menu I get: Could not find ramdisk image /ubninit Any ideas?