Sherman IT

01 September 2025

It always asks for Recovery Key when I boot to Windows, after I set up dual boot (Windows + Ubuntu)

1. To boot into Windows

Press F12 to enter boot menu. Choose Windows.

2. To boot into Ubuntu

(1) Do NOT press F12. Simply wait, and choose 'Ubuntu'.

Explanation: To boot into Windows, use Windows Boot Manager; to boot into Ubuntu, use GRUB.

(2) Press F12 to enter boot menu. Choose Ubuntu.

How to extract texts from an image on ubuntu?

To extract English texts -

$ sudo apt install tesseract-ocr

$ tesseract your_image_name.png extracted_text.txt

To extract Simplified Chinese texts -

$ sudo apt install tesseract-ocr tesseract-ocr-chi-sim

$ tesseract your_image.tiff output_text.txt -l chi_sim

To extract Traditional Chinese texts -

$ sudo apt install tesseract-ocr tesseract-ocr-chi-tra

$ tesseract your_image.tiff output_text.txt -l chi_tra

To extract multiple languages, e.g. English and Simplified Chinese, and Traditional Chinese texts -

$ tesseract your_image.tiff output_text.txt -l eng+chi_sim+chi_tra

28 August 2025

Can not Print Documents from MS OneDrive on MacBooks to Sharp Printers

On the screen of the physical printer, enable 'MS OneDrive'.

On user's MacBook. Open a document from MS OneDrive. File > Print.

'More Settings' > 'Printe using system dialog' > 'Printer Options' > 'Job Handling' > 'Authentication' > 'User Number'. Re-enter your password. (Password for cloud and password for local are different)

'More Settings' > 'Print Using Syetem Dialog' > 'Presets'. Choose 'SharpBP70C45 1'. 'Save Current Settings as Preset...'.

... 'Presets' > 'Edit Preset List...'. Select 'SharpBP70C45' > '-' > 'OK'.

27 August 2025

Can not print black and white on MacBook to Sharp BP-70C45 multi-function printer

Normally, in 'Printer Options', there are 6 options, including 'Image Quality'. In 'Image Quality', there are 3 options - 'Automatic', 'Colour', and 'Black and White'.

If there are only 2 options (or fewer than 6 options) in 'Printer Options', and there is not 'Image Quality' option,

Choose Apple menu > System Settings, then click Printers & Scanners in the sidebar. (You may have to scroll down.)

Click the printer in the Printers list on the right, click the Options & Supplies button, select (or de-select) the Use Generic Printer Features checkbox, then click OK.