Search This Blog

Java: check if a String contains only ASCII

import java.nio.charset.Charset;

public boolean isAscii(String v) {
    Charset.forName("US-ASCII").newEncoder().canEncode(v);
}

Eclipse: Disable auto escaping when pasting

 

  1. In the preferences menu deselect: Java > Editor > Typing > Escape text when pasting into a string literal
  2. Disable smart insert mode: Edit > Smart Insert Mode [Ctrl+Shift+Insert]

Shell scripts to count files and sum up file sizes

Fix Windows 10 Update KB5034441 Error 0x80070643

The reason KB5034441 failed to install with error 0x80070643 is that there is not sufficient space in WinRE recovery partition. The solution is:

Manually resize your WinRE recovery partition by 250 MB

  1. Open a Command Prompt window (cmd) as Administrator.
  2. Check WindowsRE status:
    reagentc /info

    If the WinRE is installed, there should be a “Windows RE location” with a path to the WinRE directory. An example is, “Windows RE location: [file://%3f/GLOBALROOT/device/harddisk0/partition4/Recovery/WindowsRE]\\?\GLOBALROOT\device\harddisk0\partition4\Recovery\WindowsRE.” Here, the number after “harddisk” and “partition” is the index of the disk and partition WinRE is on.
  3. Disable the WindowsRE:
    reagentc /disable
  4. Shrink the OS partition and prepare the disk for a new recovery partition.
    • Run
      diskpart
    • Run
      list disk
    • Select the OS disk (This should be the same disk index as WinRE.), run
      sel disk OS_DISK_INDEX
      e.g.
      sel disk 0
      if disk 0 is the OS disk.
    • Find the OS Primary partition, run
      list part
    • Select the OS Primary partition, run
      sel part OS_PARTITION_INDEX
    • Shrink the OS Primary partition by 250MB, run
      shrink desired=250 minimum=250
  5. Delete the WinRE recovery partition
    • In diskpart, select WinRE partition, run
      sel part WinRE_PARTITION_INDEX
    • Delete the WinRE partition, run
      delete partition override
  6. Create a new WinRE recovery partition.
    • First, check if the disk partition style is a GUID Partition Table (GPT) or a Master Boot Record (MBR). To do that, run
      list disk
      . Check if there is an asterisk character (*) in the “Gpt” column. If there is an asterisk character (*), then the drive is GPT. Otherwise, the drive is MBR.
    • If your disk is GPT, run
      create partition primary id=de94bba4-06d1-4d40-a16a-bfd50179d6ac
      followed by the command
      gpt attributes =0x8000000000000001
    • If your disk is MBR, run
      create partition primary id=27
  7. Format the new WinRE recovery partition, run
    format quick fs=ntfs label="Windows RE tools"

    To confirm that the WinRE partition is created, run
    list vol

    Exit from diskpart, run
    exit
  8. Re-enable WinRE, run
    reagentc /enable

    To confirm where WinRE is installed, run
    reagentc /info

Now you should be able to install KB5034441 via Windows Update






See also