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polendina's questions

Martin Hope
polendina
Asked: 2023-12-18 00:51:47 +0800 CST
  • 5

I'm trying to upgrade the RAM on a desktop computer, which currently has 4x2G m378b5773ch0-ch9 sticks.

When I look up the manufacturer's website, It says that it Supports up to 16 GB (unbuffered) on 64-bit computers , however when I inspect the maximum capacity of the motherboard using dmidecode, I get the following

 $ sudo dmidecode -t 16
# dmidecode 3.3
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x000D, DMI type 16, 23 bytes
Physical Memory Array
    Location: System Board Or Motherboard
    Use: System Memory
    Error Correction Type: None
    Maximum Capacity: 32 GB
    Error Information Handle: Not Provided
    Number Of Devices: 4

Which one is which?

ram
Martin Hope
polendina
Asked: 2020-12-06 07:07:31 +0800 CST
  • 4

I accidentally deleted a directory with

rm -rf /media/directory

When using

ls -lh /media

the space appears to be free, but when I use df or open the file manager nautilus or pantheon, it shows that the previously occupied space is still allocated.

I googled this problem and some says that some process is still using these data, so it won't be freed till unmount, restart or killing the process itself. I did none of these still, is there any way to recover it?

rm df
Martin Hope
polendina
Asked: 2020-10-01 07:54:02 +0800 CST
  • 0

i was reading about repositories at the official ubuntu documentation , and can't understand the difference between both of them

Close. The 'Close' button must be selected to execute any change(s). If the action would change system files, they are written at this time.

Reload. Any time a setting is changed which alters a repository setting the 'Reload' button should be selected to allow the applicable repository database to be updated. Repository information will not normally be updated until the 'Reload' button is selected. If you do not wish to use 'Reload', select 'Close' to exit without updating the database.

can't understand :

  • the close action where it states it use close to execute changes and then stating select close to exit without updating

  • why would it do any changes to the database -without apt-get - other than changing configuration files

-the documentation i read : https://help.ubuntu.com/community/Repositories/Ubuntu

package-management apt